Water Information Reporting
Copyright © Government of Western Australia
Information supplied by the Department of Water and Environmental Regulation is protected by the Copyright Act 1968. That copyright belongs to the State of Western Australia.
Apart from any fair dealing for the purpose of private study, research, criticism or review, as permitted under the Copyright Act 1968, no part may be
reproduced or reused for any purpose without the written permission of the Department of Water and Environmental Regulation. Please click on the Copyright
link for full details.
Disclaimer / limitation of liability
The information contained herein is provided by the Department of Water and Environmental Regulation in good faith as a public service.
However, the Department does not guarantee the accuracy of this information, and it is the responsibility of recipients to make their own enquiries
as to its accuracy, currency and appropriateness. Telemetered data is provisional only and has not been verified for accuracy. If any aspect of this information is of significance to you, you should
discuss your particular circumstances with the Department. Please click on the Disclaimer
link for full details.
Should you require further information or technical assistance, please contact one of our water information officers.
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1980
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 [ ] [ ] [ ] [ ] 14.42 " 36.88 " 699.3 $1355 $ 590.3 " 519.0 " 169.1 " 56.06 " 1
2 [ ] [ ] [ ] [ ] 14.55 " 48.14 " 493.1 $1138 $ 502.3 " 486.5 " 198.3 " 54.93 " 2
3 [ ] [ ] [ ] [ ] 14.55 " 62.01 " 351.6 $ 834.6 $ 461.0 " 431.3 " 282.0 " 52.24 " 3
4 [ ] [ ] [ ] [ ] 14.42 " 69.28 " 261.0 $ 652.0 $ 490.8 " 400.2 # 219.4 " 46.55 " 4
5 [ ] [ ] [ ] [ ] 14.49 " 91.88 " 209.5 $ 590.5 $ 451.3 " 384.4 # 191.8 " 44.86 " 5
6 [ ] [ ] [ ] [ ] 15.48 " 110.6 " 172.5 $ 645.3 $ 462.3 " 367.5 # 180.8 " 42.33 " 6
7 [ ] [ ] [ ] [ ] 15.42 " 101.8 " 146.7 $ 576.2 $ 478.4 " 346.3 # 167.7 " 38.17 " 7
8 [ ] [ ] [ ] [ ] 15.51 " 83.70 " 127.7 $ 534.2 " 567.2 " 309.1 # 145.5 " 36.23 " 8
9 [ ] [ ] [ ] [ ] 15.81 " 70.72 " 142.2 $1897 " 513.5 " 268.7 " 128.9 " 34.59 " 9
10 [ ] [ ] [ ] [ ] 16.30 " 60.71 " 711.4 $4212 " 446.0 " 237.6 " 114.7 " 32.77 " 10
11 [ ] [ ] [ ] [ ] 16.32 " 52.47 "1103 $2139 " 395.5 " 207.6 " 104.6 " 25.76 " 11
12 [ ] [ ] [ ] [ ] 16.17 " 46.90 "1400 $1341 " 353.2 " 186.2 " 96.06 " 23.31 " 12
13 [ ] [ ] [ ] [ ] 16.14 " 43.74 "1149 $ 820.2 " 348.8 " 167.6 " 89.69 " 21.50 " 13
14 [ ] [ ] [ ] [ ] 15.87 " 43.33 " 911.6 $ 495.2 " 655.8 " 144.2 " 81.73 " 20.50 " 14
15 [ ] [ ] [ ] [ ] 15.87 " 51.57 "1073 $ 278.9 " 629.3 " 127.0 " 76.88 " 19.30 " 15
16 [ ] [ ] [ ] [ ] 15.52 " 66.00 "1905 $ 209.4 " 577.6 " 116.2 " 70.18 " 19.35 " 16
17 [ ] [ ] [ ] [ ] 15.14 " 71.22 "1518 $ 179.2 " 603.7 " 114.0 " 64.89 " 17.95 " 17
18 [ ] [ ] [ ] [ ] 14.79 " 70.04 "1004 $ 235.0 " 535.1 " 113.6 " 64.52 " 18.42 " 18
19 [ ] [ ] [ ] [ ] 14.61 " 64.03 " 710.7 $ 326.5 " 461.9 " 96.72 " 60.05 " 15.33 " 19
20 [ ] [ ] [ ] [ ] 14.40 " 60.78 " 533.8 $ 287.1 " 403.3 " 92.15 " 59.78 " 15.46 " 20
21 [ ] [ ] [ ] [ ] 14.26 " 57.20 " 427.4 $ 469.6 " 357.5 " 217.7 " 56.39 " 14.52 " 21
22 [ ] [ ] [ ] [ ] 14.42 " 57.32 " 350.7 $ 596.0 " 448.0 " 566.6 " 49.24 " 13.53 " 22
23 [ ] [ ] [ ] [ ] 14.55 " 67.18 " 335.0 $ 480.4 " 617.8 " 545.3 " 45.48 " 15.19 " 23
24 [ ] [ ] [ ] [ ] 14.54 " 97.35 " 407.7 $ 370.5 " 783.1 " 387.2 " 41.86 " 13.54 " 24
25 [ ] [ ] [ ] [ ] 14.40 " 248.6 " 458.0 $ 297.8 " 841.3 " 325.3 " 41.43 " 13.45 " 25
26 [ ] [ ] [ ] [ ] 14.40 " 409.6 " 623.2 $ 729.1 " 668.1 " 313.2 " 46.33 " 14.04 " 26
27 [ ] [ ] [ ] [ ] 14.85 " 347.7 " 776.7 $ 932.7 " 541.6 " 287.5 " 68.95 " 13.08 " 27
28 [ ] [ ] [ ] [ ] 16.94 " 252.2 " 759.9 $ 722.9 " 468.5 " 259.3 " 74.85 " 13.73 " 28
29 [ ] [ ] [ ] [ ] 21.11 " 225.9 " 610.0 $ 579.8 " 521.6 " 232.0 " 67.09 " 14.43 " 29
30 [ ] [ ] [ ] 25.17 " 545.4 " 519.4 $ 696.7 " 559.0 " 206.4 " 58.67 " 17.62 " 30
31 [ ] [ ] 30.90 " 762.5 $ 711.6 " 184.5 " 21.31 " 31
Mean [ ] [ ] [ ] [ ] 16.17 " 120.4 " 666.4 $ 817.3 $ 524.5 " 278.7 # 103.9 " 25.81 "
Median [ ] [ ] [ ] [ ] 15.14 " 68.23 " 610.0 $ 596.0 $ 507.9 " 259.3 # 75.87 " 19.35 "
Maximum [ ] [ ] [ ] [ ] 30.90 " 545.4 "1905 $4212 $ 841.3 " 566.6 # 282.0 " 56.06 "
Minimum [ ] [ ] [ ] [ ] 14.26 " 36.88 " 127.7 $ 179.2 $ 348.8 " 92.15 # 41.43 " 13.08 "
Total [ ] [ ] [ ] [ ] 501.4 " 3614 "20659 $25337 $15735 " 8642 # 3117 " 800.1 "
Missing Days 31 29 31 30 0 0 0 0 0 0 0 0
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 320.0 $ " ... Relative Uncertainty +/-10%
Ann. Median 172.5 $ # ... Relative Uncertainty +/-15%
Annual Total 78408 $ $ ... Relative Uncertainty +/-20%
Missing Days 121 [ ... Not Available
Maximum Minimum
Daily 4212 $ 13.08 $
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1981
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 24.60 " 7.619" 9.465" 37.62 " 20.62 " 100.3 " 412.8 "1519 " 376.6 " 427.7 " 88.99 " 84.67 " 1
2 25.19 " 9.927" 7.349" 33.67 " 19.29 " 86.94 " 341.7 "1322 " 345.4 " 837.8 " 87.39 " 73.92 " 2
3 24.49 " 7.197" 8.167" 39.04 " 18.68 " 100.1 " 291.8 "1081 # 300.8 " 677.4 " 87.68 " 65.93 " 3
4 23.08 " 5.572" 6.341" 50.89 " 15.78 " 123.1 " 260.0 " 973.2 # 263.1 " 491.4 " 85.74 " 64.15 " 4
5 21.52 " 4.364" 7.457" 55.90 " 15.60 " 96.21 " 237.9 "1010 # 272.4 " 440.5 " 77.76 " 62.15 " 5
6 17.10 " 3.313" 11.47 # 56.44 " 14.63 " 79.39 " 217.6 " 941.3 # 286.4 " 395.3 " 71.42 " 59.27 " 6
7 15.03 " 3.602" 14.78 # 54.01 " 16.48 " 87.73 " 199.4 "1110 # 373.7 " 370.4 " 71.64 " 54.98 " 7
8 11.88 " 4.904" 17.90 # 56.87 " 13.58 " 157.7 " 183.6 "1333 #1490 " 340.9 " 70.98 " 50.36 " 8
9 10.51 " 7.856" 20.41 # 54.23 " 13.62 " 295.1 " 170.6 "1032 #1776 " 310.8 " 70.39 " 45.66 " 9
10 9.514" 4.895" 20.44 # 50.38 " 14.62 " 261.5 " 158.9 "1325 #1186 " 275.2 " 64.62 " 41.21 " 10
11 9.907" 6.267" 19.83 # 48.40 " 12.18 " 199.1 " 154.2 "2367 " 866.0 " 241.8 " 62.63 " 39.16 " 11
12 10.35 " 5.068" 17.11 " 46.33 " 12.74 " 221.8 " 152.6 "1952 " 674.9 " 215.3 " 89.64 " 39.05 " 12
13 10.28 " 9.681" 16.51 " 46.56 " 14.58 " 339.4 " 152.8 "1409 " 562.7 " 200.1 " 200.3 " 38.32 " 13
14 7.149" 8.108" 14.81 " 41.59 " 15.29 " 278.3 " 150.6 "1732 " 484.1 " 182.8 " 206.5 " 32.84 " 14
15 5.848" 10.69 " 13.32 " 39.13 " 15.14 " 217.0 " 142.6 "4640 " 414.3 " 167.4 " 147.8 " 28.43 " 15
16 6.418" 9.838" 10.24 " 35.49 " 15.21 " 255.8 " 135.1 "2823 " 381.6 " 153.6 " 117.7 " 28.02 " 16
17 7.382" 12.78 " 9.245" 33.77 " 15.51 " 272.6 " 141.2 "1870 " 429.2 " 130.0 " 98.04 " 27.26 " 17
18 7.568" 10.60 " 23.52 " 31.82 " 14.91 " 231.6 " 262.6 "1470 " 479.7 " 123.3 " 80.54 " 19.20 " 18
19 11.34 " 11.43 " 67.01 " 30.86 " 14.81 " 205.8 " 286.0 "1289 " 573.3 " 118.9 " 70.01 " 13.95 " 19
20 10.15 " 11.73 " 62.71 " 28.09 " 14.83 " 220.7 " 232.0 "1273 " 815.2 " 113.2 " 60.89 " 13.59 " 20
21 7.618" 11.03 " 53.01 " 24.93 " 17.14 " 295.3 " 255.3 "1136 " 852.8 " 99.44 " 54.66 " 12.39 " 21
22 6.710" 11.69 " 45.06 " 21.51 " 18.28 " 283.0 "1916 " 931.3 " 689.7 " 98.54 " 52.14 " 13.32 " 22
23 4.178" 12.54 " 44.74 " 20.83 " 18.09 " 229.7 "3133 " 806.8 " 586.5 " 97.80 " 46.86 " 10.34 " 23
24 5.326" 11.74 " 47.88 " 19.14 " 18.61 " 202.8 "1888 " 745.1 " 489.7 " 91.66 " 45.19 " 9.526" 24
25 5.708" 10.25 " 54.10 " 26.94 " 32.29 " 193.2 "1384 " 746.9 " 426.7 " 84.94 " 45.23 " 8.957" 25
26 7.581" 8.424" 45.58 " 25.08 " 37.70 " 190.3 "1141 " 745.4 " 389.6 " 90.45 " 59.03 " 8.347" 26
27 6.956" 8.586" 39.76 " 18.00 " 36.42 " 234.4 "1223 " 651.1 " 345.2 " 112.1 " 115.5 " 9.129" 27
28 7.076" 7.668" 36.52 " 18.78 " 36.80 " 473.3 "1237 " 571.9 " 311.6 " 113.9 " 130.5 " 8.861" 28
29 7.113" 37.60 " 31.71 " 42.13 " 549.8 "1030 " 533.3 " 288.4 " 103.6 " 114.1 " 7.716" 29
30 4.858" 31.83 " 25.96 " 59.24 " 480.0 "2023 " 470.7 " 332.6 " 102.2 " 96.78 " 7.747" 30
31 7.624" 33.98 " 81.37 " 2162 " 416.5 " 94.95 " 7.395" 31
Mean 10.97 " 8.479" 27.36 # 36.80 " 22.78 " 232.1 " 699.4 "1297 # 568.8 " 235.6 " 89.03 " 31.80 "
Median 7.624" 8.505" 20.41 # 34.63 " 15.78 " 221.3 " 260.0 "1110 # 428.0 " 153.6 " 79.15 " 28.02 "
Maximum 25.19 " 12.78 " 67.01 # 56.87 " 81.37 " 549.8 "3133 "4640 #1776 " 837.8 " 206.5 " 84.67 "
Minimum 4.178" 3.313" 6.341# 18.00 " 12.18 " 79.39 " 135.1 " 416.5 # 263.1 " 84.94 " 45.19 " 7.395"
Total 340.1 " 237.4 " 848.2 # 1104 " 706.3 " 6963 "21682 "40237 #17066 " 7304 " 2671 " 985.9 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 274.3 # " ... Relative Uncertainty +/-10%
Ann. Median 62.63 # # ... Relative Uncertainty +/-15%
Annual Total 100147 #
Maximum Minimum
Daily 4640 # 3.313#
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1982
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 9.912" 83.22 " 20.89 " 25.68 $ 17.37 " 16.10 " 354.1 " 339.7 " 334.9 " 274.9 " 66.96 " 12.39 " 1
2 11.96 " 73.30 " 18.72 " 25.17 $ 20.15 " 18.41 " 372.2 " 393.5 " 301.1 " 241.1 " 63.52 " 11.06 " 2
3 11.80 " 61.81 " 19.60 " 24.67 $ 19.95 " 28.35 " 327.3 " 455.7 " 276.4 " 219.8 " 59.18 " 12.08 " 3
4 15.64 " 52.81 " 20.85 " 24.17 $ 19.43 " 62.68 " 388.3 " 401.4 " 261.6 " 218.3 " 56.32 " 14.49 " 4
5 15.18 " 44.20 " 20.43 " 23.68 $ 19.44 " 69.15 " 403.9 " 357.8 " 238.8 " 444.2 " 54.12 " 13.18 " 5
6 16.31 " 40.33 " 19.11 " 23.20 $ 19.50 " 48.74 " 481.3 " 320.7 " 204.6 " 613.1 " 52.14 " 13.54 " 6
7 11.99 " 36.42 " 18.33 " 22.73 $ 19.70 " 39.50 " 453.4 " 301.3 " 185.5 " 512.8 " 49.47 " 13.05 " 7
8 10.20 " 34.19 " 19.35 " 22.26 $ 20.87 " 46.50 " 374.3 " 370.1 " 175.4 " 402.0 " 45.89 " 12.30 " 8
9 15.94 " 31.85 " 19.41 " 21.80 $ 20.83 " 64.81 " 341.4 " 437.6 " 165.5 " 321.4 " 45.30 " 11.95 " 9
10 15.47 " 26.48 " 19.64 " 21.34 $ 20.11 " 94.23 " 391.2 " 399.5 " 153.1 " 260.3 " 43.66 " 12.60 " 10
11 17.99 " 24.57 " 16.82 " 20.89 $ 19.55 " 110.0 " 376.0 " 351.0 " 141.6 " 233.5 " 42.24 " 15.49 " 11
12 16.73 " 21.08 " 19.96 " 20.43 $ 21.10 " 126.1 " 323.2 " 314.4 " 137.6 " 216.4 " 42.48 " 17.49 " 12
13 10.42 " 21.72 " 21.20 " 19.97 $ 26.44 " 173.8 " 289.1 " 287.7 " 139.5 " 198.9 " 41.55 " 17.38 " 13
14 10.49 " 23.51 " 20.43 " 19.51 $ 20.93 " 357.0 " 285.6 " 268.3 " 149.2 " 181.8 " 39.80 " 17.32 " 14
15 16.04 " 25.51 " 21.05 " 19.06 $ 19.32 " 307.3 " 664.2 " 254.7 " 297.4 " 172.4 " 39.75 " 15.61 " 15
16 12.09 " 26.78 " 21.11 " 18.62 $ 18.28 " 393.5 "1336 " 237.6 " 452.8 " 163.0 " 39.18 " 16.05 " 16
17 9.445" 26.42 " 23.12 " 18.18 $ 19.07 " 458.3 "1197 " 219.7 " 434.3 " 152.0 " 37.19 " 13.35 " 17
18 14.29 " 23.57 " 21.35 " 17.75 $ 17.58 " 370.9 " 816.6 " 205.9 " 343.0 " 144.7 " 32.74 " 12.61 " 18
19 14.80 " 21.62 " 17.98 " 17.33 $ 16.99 " 300.3 " 606.2 " 221.1 " 286.4 " 127.2 " 29.83 " 11.78 " 19
20 14.53 " 19.64 " 21.31 " 16.91 $ 16.66 " 250.1 " 569.5 " 285.1 " 250.5 " 104.8 " 26.29 " 10.53 " 20
21 24.09 " 18.31 " 25.72 " 16.50 $ 16.52 " 214.2 " 806.1 " 267.0 " 242.1 " 93.59 " 20.87 " 10.71 " 21
22 685.9 " 18.32 " 25.38 " 16.10 $ 16.34 " 190.4 " 742.7 " 239.0 " 291.9 " 83.80 " 21.82 " 8.878" 22
23 2012 " 17.72 " 26.26 " 15.70 $ 15.84 " 176.8 " 629.0 " 755.9 " 394.0 " 77.70 " 17.51 " 7.179" 23
24 988.1 " 18.17 " 26.27 " 15.30 $ 17.17 " 175.3 " 541.6 "1442 " 489.4 " 75.67 " 15.30 " 6.270" 24
25 533.7 " 21.00 " 26.46 " 14.92 $ 16.64 " 188.0 " 492.9 " 936.1 " 670.7 " 83.27 " 13.42 " 5.134" 25
26 316.6 " 17.80 " 27.44 " 14.52 $ 15.31 " 197.3 " 472.0 " 637.7 " 596.7 " 102.1 " 12.48 " 5.662" 26
27 213.1 " 21.13 " 24.98 " 14.12 $ 16.09 " 193.5 " 484.1 " 499.7 " 488.3 " 99.42 " 11.04 " 4.975" 27
28 166.6 " 21.19 " 23.54 " 13.75 $ 16.09 " 209.2 " 534.9 " 433.1 " 411.3 " 90.43 " 11.36 " 4.683" 28
29 136.0 " 23.45 " 13.63 $ 16.03 " 343.6 " 478.3 " 452.7 " 355.4 " 83.19 " 13.31 " 3.874" 29
30 115.5 " 26.77 " 15.02 " 16.04 " 334.8 " 415.7 " 429.8 " 307.6 " 77.42 " 13.63 " 3.387" 30
31 93.30 " 26.58 $ 16.06 " 371.4 " 377.5 " 71.78 " 3.928" 31
Mean 179.2 " 31.17 " 22.05 $ 19.10 $ 18.43 " 185.3 " 526.5 " 415.9 " 305.9 " 198.1 " 35.28 " 10.93 "
Median 15.94 " 24.07 " 21.11 $ 18.84 $ 18.28 " 182.4 " 472.0 " 357.8 " 289.1 " 163.0 " 39.46 " 12.08 "
Maximum 2012 " 83.22 " 27.44 $ 25.68 $ 26.44 " 458.3 "1336 "1442 " 670.7 " 613.1 " 66.96 " 17.49 "
Minimum 9.445" 17.72 " 16.82 $ 13.63 $ 15.31 " 16.10 " 285.6 " 205.9 " 137.6 " 71.78 " 11.04 " 3.387"
Total 5557 " 872.8 " 683.6 $ 573.0 $ 571.5 " 5560 "16321 "12894 " 9177 " 6142 " 1058 " 339.0 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 163.7 $ " ... Relative Uncertainty +/-10%
Ann. Median 37.19 $ $ ... Relative Uncertainty +/-20%
Annual Total 59752 $
Maximum Minimum
Daily 2012 $ 3.387$
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1983
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 3.583" 4.356" 8.954" 12.73 " 12.26 " 38.60 "2044 "1312 "3168 " 351.4 " 68.38 " 21.14 " 1
2 3.952" 5.252" 6.654" 14.24 " 15.02 " 164.8 "1310 "1026 "3977 " 320.7 " 63.77 " 21.54 " 2
3 3.418" 4.823" 6.950" 16.63 " 21.59 " 251.7 " 937.6 " 860.3 "3515 " 294.8 " 60.16 " 20.41 " 3
4 2.845" 4.943" 6.295" 19.34 " 23.38 " 167.2 " 798.7 " 820.6 "8288 " 275.3 " 57.75 " 21.76 " 4
5 2.363" 5.920" 6.491" 18.94 " 28.38 " 132.5 " 633.4 "1330 "6296 " 254.0 " 56.01 " 18.44 " 5
6 3.019" 6.453" 6.519" 16.59 " 42.85 " 118.4 " 516.2 "1954 "3945 " 235.2 " 54.69 " 16.28 " 6
7 3.724" 8.167" 5.445" 15.62 " 41.85 " 103.3 " 447.0 "1523 "5668 " 221.7 " 57.44 " 18.40 " 7
8 3.387" 14.68 " 5.950" 15.68 " 35.58 " 90.07 " 548.4 "1102 "4353 " 212.0 " 58.44 " 16.96 " 8
9 2.930" 17.30 " 5.305" 14.28 " 31.16 " 78.71 "1654 " 879.0 "2864 " 195.4 " 64.08 " 18.92 " 9
10 3.023" 17.37 " 4.825" 15.39 " 31.66 " 69.70 "3054 " 748.8 "2206 " 188.9 " 65.85 " 17.10 " 10
11 3.285" 13.59 " 4.676" 18.04 " 30.23 " 62.51 "2063 " 660.4 "1828 " 179.9 " 60.94 " 14.52 " 11
12 3.812" 11.27 " 5.509" 16.26 " 28.86 " 57.57 "1301 " 818.8 "1907 " 179.2 " 56.83 " 14.34 " 12
13 3.882" 12.11 " 4.909" 15.06 " 28.47 " 54.17 " 944.1 "1604 "2505 " 208.1 " 54.04 " 13.59 " 13
14 4.315" 10.01 " 5.261" 15.77 " 26.69 " 51.78 " 766.0 "2650 "2274 " 222.8 " 52.05 " 11.20 " 14
15 3.895" 10.91 " 4.703" 12.24 " 24.34 " 50.05 " 645.1 "2577 "2020 " 198.8 " 47.24 " 11.17 " 15
16 3.844" 10.59 " 5.688" 11.59 " 23.82 " 48.90 " 553.9 "1743 "2098 " 178.3 " 48.57 " 10.12 " 16
17 3.330" 14.67 " 6.978" 13.01 " 36.21 " 55.44 " 482.8 "1300 "1815 " 177.1 " 49.76 " 7.718" 17
18 3.526" 16.83 " 6.513" 11.22 " 31.36 " 249.8 " 437.3 "1214 "1464 " 183.3 " 47.30 " 8.856" 18
19 3.670" 16.09 " 6.951" 9.477" 26.65 " 687.4 " 422.8 "1147 "1220 " 169.1 " 48.88 " 9.006" 19
20 3.920" 14.88 " 7.302" 8.616" 24.80 " 828.3 " 416.3 "2589 "1053 " 154.8 " 50.57 " 8.566" 20
21 4.401" 12.83 " 8.265" 9.547" 25.19 " 549.5 " 440.0 "3359 " 906.2 " 141.8 " 50.08 " 6.371" 21
22 4.626" 11.08 " 5.761" 10.50 " 25.38 " 654.4 " 630.1 "2330 " 802.7 " 126.8 " 46.64 " 5.834" 22
23 4.868" 8.628" 5.125" 11.11 " 24.03 " 491.3 " 612.0 "2469 " 706.3 " 116.0 " 42.21 " 4.481" 23
24 4.744" 7.454" 5.889" 12.00 " 25.18 " 356.6 "1887 "3407 " 644.3 " 106.5 " 38.23 " 6.799" 24
25 4.614" 8.096" 5.790" 12.03 " 23.99 " 315.4 "3272 "3469 " 576.8 " 98.94 " 37.25 " 6.214" 25
26 4.550" 10.31 " 6.139" 11.94 " 22.03 " 447.8 "3464 "2688 " 519.2 " 94.53 " 32.54 " 8.817" 26
27 4.365" 9.376" 5.914" 11.21 " 23.65 " 575.5 "2490 "2424 " 486.2 " 89.23 " 30.39 " 9.496" 27
28 4.125" 11.50 " 6.138" 11.40 " 23.90 "3350 "1718 "2446 " 454.2 " 83.80 " 29.19 " 10.80 " 28
29 3.923" 7.477" 16.28 " 24.12 "6131 "1290 "3194 " 414.7 " 80.29 " 28.96 " 8.565" 29
30 3.808" 8.423" 13.51 " 23.83 "3861 "1853 "3144 " 381.3 " 77.18 " 25.98 " 7.653" 30
31 3.579" 9.811" 23.06 " 1829 "2955 " 73.54 " 8.270" 31
Mean 3.785" 10.69 " 6.342" 13.68 " 26.76 " 669.8 "1273 "1927 "2278 " 177.1 " 49.47 " 12.36 "
Median 3.812" 10.75 " 6.138" 13.26 " 25.18 " 166.0 " 937.6 "1743 "1868 " 179.2 " 50.33 " 10.80 "
Maximum 4.868" 17.37 " 9.811" 19.34 " 42.85 "6131 "3464 "3469 "8288 " 351.4 " 68.38 " 21.76 "
Minimum 2.363" 4.356" 4.676" 8.616" 12.26 " 38.60 " 416.3 " 660.4 " 381.3 " 73.54 " 25.98 " 4.481"
Total 117.3 " 299.5 " 196.6 " 410.4 " 829.6 "20096 "39468 "59757 "68368 " 5490 " 1484 " 383.4 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 539.4 " " ... Relative Uncertainty +/-10%
Ann. Median 32.54 "
Annual Total 196902 "
Maximum Minimum
Daily 8288 " 2.363"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1984
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 9.975" 4.302" 4.840" 8.828" 32.15 " 232.7 " 352.8 " 280.1 " 342.5 # 173.7 " 62.38 " 39.82 " 1
2 9.441" 3.989" 3.103" 8.916" 31.83 " 190.2 " 326.4 " 447.6 " 318.5 # 174.9 " 68.88 " 38.07 " 2
3 10.76 " 4.318" 4.115" 8.601" 34.03 " 210.1 " 294.1 " 580.4 " 330.5 # 173.9 " 66.98 " 34.61 " 3
4 9.245" 3.134" 4.685" 7.193" 32.17 " 278.4 " 387.8 " 522.6 " 349.1 # 167.1 " 64.12 " 32.66 " 4
5 9.572" 2.786" 5.280" 5.841" 28.45 " 280.2 " 723.3 " 465.7 " 546.2 # 162.2 " 62.39 " 27.98 " 5
6 9.108" 5.479" 6.708" 6.739" 23.61 " 401.8 " 854.9 " 518.1 "1176 # 155.3 " 84.55 " 21.92 " 6
7 10.27 " 3.832" 4.037" 6.364" 27.56 " 371.0 " 711.3 " 793.1 " 930.3 # 144.5 " 179.5 " 24.85 " 7
8 11.43 " 3.069" 5.112" 6.580" 31.36 " 298.2 " 743.0 " 828.9 " 730.9 # 139.5 " 212.5 " 27.53 " 8
9 9.382" 2.939" 6.072" 5.864" 30.69 " 249.8 " 689.9 " 683.0 "1086 # 141.0 " 291.8 " 27.19 " 9
10 8.701" 2.463" 7.793" 6.573" 31.29 " 220.8 " 547.6 " 565.5 "1194 # 134.3 " 260.4 " 26.74 " 10
11 6.684" 2.550" 9.348" 9.381" 31.12 " 203.4 " 458.3 " 471.4 " 852.7 # 123.5 " 197.2 " 26.92 " 11
12 6.294# 4.924" 8.036" 17.20 " 36.38 " 200.9 " 399.7 " 424.1 " 687.5 " 119.8 " 153.9 " 26.18 " 12
13 5.810# 4.265" 7.443" 15.07 " 35.34 " 517.3 " 350.4 " 395.9 " 598.5 " 111.0 " 122.9 " 24.08 " 13
14 7.277# 4.359" 5.616" 15.96 " 32.70 " 818.0 " 316.6 " 372.4 " 839.9 " 102.6 " 99.80 " 24.74 " 14
15 7.218# 3.701" 5.501" 16.80 " 32.28 " 546.5 " 319.8 " 574.2 "1814 " 97.57 " 81.83 " 24.66 " 15
16 6.427# 3.981" 6.496" 17.39 " 32.62 " 405.8 " 522.3 " 829.4 "1354 " 89.37 " 72.33 " 22.04 " 16
17 6.083# 3.887" 10.43 " 17.52 " 40.03 " 334.2 " 549.4 " 731.8 " 970.9 " 83.85 " 69.05 " 21.67 " 17
18 6.633# 4.861" 9.412" 17.24 " 83.48 " 289.0 " 443.8 " 603.0 " 776.0 " 82.34 " 68.13 " 18.04 " 18
19 5.163" 4.952" 7.958" 16.81 " 101.0 " 252.2 " 377.0 " 564.9 " 636.3 " 72.84 " 78.58 " 18.41 " 19
20 4.009" 5.468" 7.363" 15.42 " 118.8 " 246.7 " 333.9 " 587.5 " 534.4 " 59.03 " 78.85 " 13.79 " 20
21 4.954" 6.541" 6.618" 16.91 " 118.2 " 653.3 " 300.0 " 537.3 " 461.4 " 64.49 " 70.80 " 13.16 " 21
22 4.445" 6.357" 6.375" 15.41 " 107.7 "1187 " 271.7 " 556.4 " 407.7 " 59.49 " 60.60 " 12.31 " 22
23 6.089" 5.966" 7.355" 14.44 " 85.13 " 975.3 " 251.5 " 553.5 " 350.6 " 57.95 " 55.11 " 10.95 " 23
24 4.251" 5.455" 8.021" 15.54 " 73.48 " 655.3 " 234.2 " 490.4 " 313.5 " 55.86 " 53.92 " 10.59 " 24
25 3.749" 7.193" 7.168" 15.51 " 73.60 " 578.9 " 227.7 " 417.8 " 282.0 " 53.29 " 52.49 " 9.235" 25
26 5.059" 6.642" 8.242" 14.08 " 86.33 " 563.3 " 348.0 " 381.3 " 260.5 " 49.83 " 51.01 " 10.18 " 26
27 3.802" 8.562" 7.500" 14.40 " 117.0 " 467.2 " 457.5 " 352.2 " 237.3 " 49.16 " 50.23 " 14.04 " 27
28 3.430" 8.008" 6.589" 14.05 " 191.6 " 390.8 " 433.4 " 324.7 " 216.0 " 46.69 " 47.32 " 18.88 " 28
29 3.960" 7.272" 8.108" 17.86 " 267.4 " 340.7 " 368.0 " 306.1 " 197.1 " 45.48 " 42.20 " 18.22 " 29
30 4.440" 7.746" 28.18 " 278.4 " 312.0 " 328.7 " 362.7 # 183.7 " 46.46 " 41.60 " 18.69 " 30
31 4.476" 7.738" 293.7 " 295.9 " 369.4 # 50.75 " 18.44 " 31
Mean 6.715# 4.871" 6.800" 13.22 " 81.93 " 422.4 " 426.4 " 512.6 # 632.7 # 99.62 " 96.72 " 21.83 "
Median 6.294# 4.359" 7.168" 14.75 " 36.38 " 337.5 " 368.0 " 518.1 # 540.3 # 89.37 " 68.96 " 21.92 "
Maximum 11.43 # 8.562" 10.43 " 28.18 " 293.7 "1187 " 854.9 " 829.4 #1814 # 174.9 " 291.8 " 39.82 "
Minimum 3.430# 2.463" 3.103" 5.841" 23.61 " 190.2 " 227.7 " 280.1 # 183.7 # 45.48 " 41.60 " 9.235"
Total 208.1 # 141.2 " 210.8 " 396.7 " 2540 "12672 "13220 "15892 #18981 # 3088 " 2901 " 676.7 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 193.8 # " ... Relative Uncertainty +/-10%
Ann. Median 54.52 # # ... Relative Uncertainty +/-15%
Annual Total 70931 #
Maximum Minimum
Daily 1814 # 2.463#
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1985
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 15.32 " 6.890" 3.940" 11.42 " 48.96 " 73.94 "2381 " 376.7 "1211 " 179.6 " 67.66 " 25.49 " 1
2 15.50 " 6.682" 5.276" 11.58 " 46.68 " 68.13 "2589 " 347.9 "1453 " 170.2 " 60.36 " 25.51 " 2
3 14.72 " 6.111" 4.641" 11.74 " 46.47 " 63.54 "1463 " 650.9 "1645 " 158.3 " 59.13 " 23.72 " 3
4 11.09 " 4.423" 5.088" 12.53 " 47.07 " 61.06 " 928.2 " 943.7 "1779 " 153.0 " 56.79 " 23.35 " 4
5 9.900" 5.234" 3.335" 13.03 " 46.01 " 60.96 " 681.6 "1018 "1895 " 153.0 " 54.17 " 21.55 " 5
6 8.546" 4.620" 3.986" 10.74 " 49.85 " 67.41 " 537.8 "1101 "1997 " 146.5 " 54.19 " 20.79 " 6
7 8.274" 6.321" 4.934" 10.55 " 49.49 " 104.4 " 446.8 " 888.7 "2089 " 133.3 " 53.42 " 19.69 " 7
8 7.754" 5.119" 9.793" 14.72 " 46.35 " 235.1 " 398.7 " 707.8 "2155 " 121.0 " 63.50 " 17.70 " 8
9 6.881" 5.827" 13.84 " 320.1 " 43.75 " 213.9 " 424.9 " 742.1 "2151 " 111.6 " 102.0 " 16.87 " 9
10 6.197" 6.330" 18.11 "1144 " 41.69 " 178.0 " 398.1 " 909.4 "2194 " 103.0 " 138.0 " 15.24 " 10
11 6.504" 47.65 " 19.97 " 526.0 " 40.12 " 170.3 " 400.5 " 789.9 "2257 " 96.02 " 113.4 " 15.72 " 11
12 6.147" 56.13 " 18.65 " 295.1 " 39.81 " 173.1 " 485.9 " 692.1 "2321 " 95.23 " 93.80 " 12.88 " 12
13 5.314" 32.68 " 18.23 " 199.8 " 40.47 " 194.9 " 784.8 " 663.0 "2374 " 108.5 " 79.83 " 10.65 " 13
14 5.032" 19.85 " 13.74 " 146.7 " 40.85 " 185.9 "2217 " 579.3 "2403 " 128.1 " 60.78 " 12.55 " 14
15 5.775" 13.86 " 12.98 " 115.6 " 40.92 " 176.6 "1658 " 505.9 "2410 " 126.2 " 57.54 " 13.26 " 15
16 9.219" 11.71 " 11.40 " 96.28 " 39.92 " 228.7 "1020 " 450.2 "2440 " 112.5 " 52.99 " 12.21 " 16
17 10.88 " 10.51 " 12.35 " 82.55 " 38.95 " 355.9 " 750.8 " 408.0 "2378 " 100.8 " 50.42 " 10.18 " 17
18 9.257" 9.519" 13.20 " 70.03 " 37.49 " 327.7 " 622.6 " 572.7 "1974 " 91.80 " 47.22 " 10.79 " 18
19 11.86 " 9.697" 14.24 " 61.61 " 36.82 " 267.8 " 546.0 "1316 "1461 " 85.06 " 42.66 " 12.59 " 19
20 12.93 " 7.854" 15.02 " 55.87 " 36.54 " 221.4 " 502.1 "1453 " 356.7 " 81.20 " 37.91 " 13.24 " 20
21 11.62 " 6.243" 13.52 " 51.71 " 36.14 " 207.8 " 458.4 "1253 " 308.9 " 77.17 " 35.13 " 12.49 " 21
22 11.03 " 6.875" 12.84 " 48.34 " 35.55 " 270.5 " 418.9 " 926.0 " 347.3 " 72.57 " 35.67 " 11.04 " 22
23 9.082" 5.411" 12.63 " 44.71 " 35.29 " 305.7 " 381.8 " 812.9 " 342.9 " 69.39 " 34.40 " 9.382" 23
24 5.719" 5.151" 10.43 " 41.72 " 35.55 " 282.5 " 353.8 " 603.8 " 299.4 " 66.38 " 32.91 " 9.579" 24
25 4.915" 4.657" 10.44 " 47.40 " 38.72 " 359.5 " 351.8 " 104.6 " 274.1 " 63.77 " 29.43 " 10.14 " 25
26 5.441" 4.431" 12.61 " 42.63 " 46.74 " 382.0 " 367.7 " 191.1 " 250.5 " 63.81 " 28.10 " 13.27 " 26
27 5.320" 3.127" 10.65 " 50.31 " 126.8 " 381.4 " 409.7 " 178.6 " 229.8 " 63.74 " 26.52 " 14.12 " 27
28 5.558" 4.659" 10.03 " 49.88 " 141.1 " 406.0 " 648.4 " 411.4 " 209.9 " 70.43 " 24.81 " 11.60 " 28
29 6.414" 7.238" 47.42 " 110.0 " 767.6 " 609.0 " 834.4 " 196.1 " 80.87 " 24.85 " 10.17 " 29
30 5.827" 8.723" 49.93 " 92.29 "1471 " 489.9 "1051 " 188.5 " 85.71 " 23.44 " 10.63 " 30
31 5.487" 9.675" 82.33 " 419.5 "1005 " 77.55 " 8.585" 31
Mean 8.501" 11.34 " 11.01 " 122.8 " 52.87 " 275.4 " 779.0 " 725.5 "1386 " 104.7 " 54.71 " 14.68 "
Median 7.754" 6.326" 11.40 " 49.90 " 41.69 " 217.7 " 502.1 " 707.8 "1712 " 96.02 " 53.20 " 12.88 "
Maximum 15.50 " 56.13 " 19.97 "1144 " 141.1 "1471 "2589 "1453 "2440 " 179.6 " 138.0 " 25.51 "
Minimum 4.915" 3.127" 3.335" 10.55 " 35.29 " 60.96 " 351.8 " 104.6 " 188.5 " 63.74 " 23.44 " 8.585"
Total 263.5 " 317.6 " 341.6 " 3684 " 1639 " 8264 "24151 "22492 "41600 " 3247 " 1641 " 455.0 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 296.1 " " ... Relative Uncertainty +/-10%
Ann. Median 55.87 "
Annual Total 108097 "
Maximum Minimum
Daily 2589 " 3.127"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1986
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 7.478" 5.103" 24.25 " 17.81 " 12.42 " 36.48 " 123.6 "1272 " 334.9 " 191.1 " 64.16 " 22.02 " 1
2 6.585" 4.493" 20.27 " 17.98 " 12.63 " 34.00 " 98.62 " 741.5 " 298.1 " 158.1 " 60.01 " 21.07 " 2
3 6.789" 4.116" 18.43 " 17.34 " 11.94 " 32.40 " 99.98 " 515.4 " 281.2 " 142.3 " 59.16 " 20.20 " 3
4 6.667" 5.596" 17.00 " 16.54 " 13.57 " 31.52 " 113.6 " 404.0 " 324.9 " 133.6 " 60.07 " 14.11 " 4
5 7.708" 3.984" 15.28 " 16.02 " 14.72 " 30.42 " 106.7 " 339.4 " 312.3 " 127.8 " 60.53 " 12.53 " 5
6 5.750" 3.930" 15.61 " 15.94 " 15.24 " 30.12 " 101.5 " 316.3 " 272.6 " 127.0 " 59.84 " 11.22 " 6
7 5.661" 4.410" 15.65 " 15.81 " 17.60 " 29.60 " 99.02 " 386.0 " 248.9 " 122.5 " 55.52 " 12.04 " 7
8 5.992" 4.462" 13.36 " 14.94 " 17.18 " 28.84 " 92.84 " 363.4 " 236.8 " 114.3 " 54.71 " 15.82 " 8
9 5.947" 5.392" 13.82 " 12.82 " 16.34 " 28.36 " 84.14 " 371.2 " 218.8 " 108.9 " 58.25 " 12.91 " 9
10 5.607" 3.685" 18.49 " 14.09 " 19.86 " 27.92 " 77.26 " 341.6 " 200.2 " 107.2 " 62.65 " 11.95 " 10
11 5.218" 3.375" 23.70 " 14.66 " 20.45 " 27.58 " 71.07 " 309.6 " 189.1 " 99.22 " 64.93 " 9.649" 11
12 7.356" 4.765" 25.20 " 12.99 " 19.19 " 27.29 " 69.16 " 317.3 " 198.3 " 103.4 " 59.09 " 10.14 " 12
13 7.584" 7.507" 24.20 " 13.29 " 28.14 " 26.84 " 69.27 " 286.5 " 194.9 " 181.8 " 56.18 " 7.614" 13
14 7.776" 11.82 " 23.57 " 14.72 " 23.50 " 26.35 " 85.51 " 269.9 " 192.2 " 206.9 " 52.01 " 9.890" 14
15 6.023" 10.92 " 22.25 " 14.89 " 19.64 " 26.25 " 160.5 " 362.5 " 251.7 " 175.8 " 47.32 " 9.357" 15
16 5.568" 11.39 " 20.04 " 12.83 " 19.54 " 26.97 " 287.3 " 364.7 " 269.5 " 154.2 " 44.19 " 9.189" 16
17 4.603" 9.408" 18.85 " 12.70 " 21.31 " 27.17 " 241.0 " 394.4 " 252.7 " 182.8 " 44.69 " 7.774" 17
18 5.461" 8.736" 15.72 " 13.80 " 21.43 " 27.25 " 241.7 " 598.0 " 293.3 " 239.9 " 37.53 " 5.699" 18
19 5.597" 6.362" 18.30 " 14.15 " 24.78 " 27.92 " 244.4 " 529.7 " 326.7 " 225.7 " 35.35 " 7.262" 19
20 5.299" 4.926" 18.90 " 13.42 " 34.80 " 28.85 " 207.0 " 450.0 " 296.4 " 199.5 " 32.52 " 5.942" 20
21 6.932" 7.158" 20.38 " 12.54 " 41.98 " 28.86 " 191.8 " 416.5 " 273.7 " 170.2 " 29.55 " 7.511" 21
22 6.077" 12.64 " 18.78 " 13.66 " 45.66 " 28.80 " 294.1 " 549.4 " 252.9 " 146.2 " 27.06 " 6.211" 22
23 6.217" 14.28 " 21.04 " 14.18 " 51.69 " 29.24 " 565.1 " 567.4 " 246.8 " 127.9 " 24.44 " 5.458" 23
24 3.921" 24.49 " 21.10 " 14.03 " 51.70 " 34.32 " 510.8 " 485.4 " 244.5 " 113.3 " 22.98 " 6.102" 24
25 4.381" 23.98 " 19.97 " 12.44 " 49.86 " 45.27 " 369.5 " 513.0 " 225.9 " 101.7 " 21.42 " 5.611" 25
26 4.835" 24.07 " 17.26 " 13.03 " 59.06 " 57.32 " 288.9 " 458.8 " 215.6 " 93.16 " 20.52 " 7.898" 26
27 3.859" 26.09 " 14.23 " 14.09 " 52.80 " 95.06 " 241.5 " 402.7 " 203.3 " 87.42 " 18.10 " 14.30 " 27
28 3.929" 26.55 " 15.15 " 13.92 " 53.18 " 143.8 " 208.0 " 423.7 " 182.6 " 82.93 " 17.31 " 11.91 " 28
29 4.263" 16.71 " 11.81 " 49.40 " 194.8 " 198.2 " 405.3 " 169.0 " 80.64 " 15.65 " 10.92 " 29
30 4.923" 16.50 " 11.43 " 43.84 " 166.3 " 586.0 " 367.6 " 211.9 " 74.75 " 19.93 " 9.622" 30
31 3.996" 15.24 " 39.38 " 1617 " 363.3 " 69.66 " 7.363" 31
Mean 5.742" 10.13 " 18.69 " 14.26 " 29.77 " 46.87 " 249.8 " 448.0 " 247.3 " 137.1 " 42.86 " 10.62 "
Median 5.661" 6.760" 18.49 " 14.06 " 21.43 " 29.05 " 191.8 " 402.7 " 247.8 " 127.8 " 46.00 " 9.649"
Maximum 7.776" 26.55 " 25.20 " 17.98 " 59.06 " 194.8 "1617 "1272 " 334.9 " 239.9 " 64.93 " 22.02 "
Minimum 3.859" 3.375" 13.36 " 11.43 " 11.94 " 26.25 " 69.16 " 269.9 " 169.0 " 69.66 " 15.65 " 5.458"
Total 178.0 " 283.6 " 579.3 " 427.9 " 922.9 " 1406 " 7746 "13888 " 7420 " 4251 " 1285 " 329.3 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 106.0 " " ... Relative Uncertainty +/-10%
Ann. Median 27.17 "
Annual Total 38720 "
Maximum Minimum
Daily 1617 " 3.375"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1987
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 6.710" 3.998" 3.157" 11.36 " 41.60 " 24.74 " 142.0 # 735.1 " 287.9 " 102.2 " 33.20 " 15.44 " 1
2 5.449" 4.771" 3.334" 12.57 " 37.99 " 24.22 " 140.7 # 554.4 " 245.6 " 89.71 " 34.12 " 14.20 " 2
3 4.837" 4.830" 4.811" 13.86 " 37.42 " 24.15 " 165.5 # 440.9 " 218.3 " 83.69 " 32.03 " 12.48 " 3
4 5.518" 3.139" 4.315" 12.74 " 41.08 " 24.27 " 370.4 # 368.0 " 197.6 " 80.91 " 30.51 " 12.97 " 4
5 3.785" 2.888" 3.580" 12.19 " 37.76 " 23.80 " 385.3 # 321.4 " 180.7 " 81.27 " 26.88 " 12.05 " 5
6 4.120" 3.704" 3.158" 12.91 " 33.93 " 25.60 " 314.1 # 286.6 " 165.0 " 74.48 " 20.62 " 12.51 " 6
7 4.417" 3.956" 2.691" 11.57 " 31.38 " 29.75 " 262.7 " 262.5 " 150.5 " 69.48 " 26.70 " 14.75 " 7
8 3.778" 3.777" 3.869" 14.36 " 31.18 " 38.38 " 834.5 " 235.5 " 139.5 " 64.37 " 25.26 " 12.35 " 8
9 4.139" 3.394" 4.198" 17.60 " 36.26 " 41.42 "1087 " 205.9 " 131.0 " 60.51 " 23.70 " 9.226" 9
10 4.216" 4.142" 2.957" 19.43 " 38.33 " 50.58 " 704.1 " 184.5 " 123.6 " 55.52 " 23.99 " 8.640" 10
11 5.185" 3.148" 3.226" 22.04 " 39.63 " 54.71 " 495.0 " 171.7 " 113.9 " 51.08 " 20.35 " 9.110" 11
12 3.735" 2.941" 3.527" 23.43 " 52.41 " 57.70 " 412.8 " 219.5 " 106.4 " 48.12 " 19.27 " 7.263" 12
13 8.047" 2.690" 3.123" 21.70 " 52.72 " 53.48 " 387.0 " 416.8 " 97.91 " 45.42 " 17.81 " 8.086" 13
14 8.061" 4.059" 3.695" 20.25 " 47.91 " 48.06 " 344.8 " 452.7 " 89.68 " 45.80 " 16.39 " 6.795" 14
15 6.665" 3.087" 4.382" 18.10 " 42.29 " 46.72 " 303.4 " 345.7 " 84.54 " 47.66 " 16.57 " 5.842" 15
16 6.481" 3.609" 8.267" 17.18 " 38.79 " 48.34 " 276.9 " 284.3 " 82.08 " 50.89 " 16.20 " 5.554" 16
17 5.370" 3.570" 11.09 " 16.20 " 36.60 " 56.38 " 265.8 " 248.7 " 95.90 " 54.11 " 18.75 " 4.875" 17
18 8.070" 3.718" 12.87 " 15.93 " 34.75 " 94.28 " 245.7 " 219.1 " 95.50 " 52.78 " 19.38 " 5.015" 18
19 7.493" 4.906" 13.82 " 15.55 " 33.22 " 477.4 " 219.9 # 198.3 " 79.85 " 49.39 " 16.05 " 4.024" 19
20 6.767" 3.208" 13.46 " 14.56 " 31.71 " 731.1 " 184.2 # 191.5 " 79.23 " 45.99 " 15.45 " 4.680" 20
21 3.266" 4.315" 10.73 " 13.32 " 30.47 " 490.2 " 151.3 # 234.8 " 77.55 " 44.19 " 15.62 " 4.637" 21
22 3.716" 3.704" 9.871" 14.81 " 29.95 " 342.5 " 126.4 # 242.6 " 73.56 " 42.12 " 16.24 " 4.045" 22
23 3.715" 3.449" 11.97 " 15.56 " 29.22 " 272.6 " 139.5 # 210.3 " 78.45 " 40.17 " 17.46 " 4.362" 23
24 4.623" 5.716" 13.02 " 15.91 " 29.39 " 229.2 " 234.5 # 189.7 " 96.70 " 39.31 " 15.89 " 5.898" 24
25 4.906" 3.787" 11.40 " 16.26 " 29.05 " 200.5 " 272.0 # 216.0 " 124.2 " 37.41 " 15.36 " 7.519" 25
26 4.392" 4.306" 13.08 " 26.86 " 28.07 " 183.9 " 240.4 # 313.3 " 142.2 " 35.39 " 16.29 " 7.971" 26
27 5.438" 3.695" 12.15 " 72.14 " 27.77 " 162.5 # 212.1 # 290.6 " 161.9 " 32.85 " 14.38 " 10.14 " 27
28 4.836" 4.646" 11.26 " 53.62 " 26.97 " 145.3 # 192.1 # 254.0 " 157.2 " 30.82 " 15.62 " 8.969" 28
29 3.514" 10.56 " 53.23 " 26.16 " 146.7 # 242.9 # 258.6 " 139.3 " 30.11 " 15.77 " 9.189" 29
30 3.714" 9.531" 58.25 " 25.44 " 148.3 # 623.9 " 367.2 " 119.7 " 31.42 " 17.78 " 9.757" 30
31 5.354" 9.486" 24.96 " 783.6 " 331.9 " 32.84 " 9.362" 31
Mean 5.171" 3.827" 7.634" 22.12 " 34.98 " 143.2 # 347.1 # 298.5 " 131.2 " 53.23 " 20.46 " 8.637"
Median 4.837" 3.711" 8.267" 16.07 " 33.93 " 55.55 # 265.8 # 258.6 " 121.6 " 48.12 " 17.80 " 8.640"
Maximum 8.070" 5.716" 13.82 " 72.14 " 52.72 " 731.1 #1087 # 735.1 " 287.9 " 102.2 " 34.12 " 15.44 "
Minimum 3.266" 2.690" 2.691" 11.36 " 24.96 " 23.80 # 126.4 # 171.7 " 73.56 " 30.11 " 14.38 " 4.024"
Total 160.3 " 107.1 " 236.6 " 663.6 " 1084 " 4297 #10762 # 9253 " 3936 " 1650 " 613.7 " 267.7 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 90.50 # " ... Relative Uncertainty +/-10%
Ann. Median 26.97 # # ... Relative Uncertainty +/-15%
Annual Total 33034 #
Maximum Minimum
Daily 1087 # 2.690#
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1988
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 6.816" 2.767" 1.623" 4.515" 15.24 " 481.4 " 713.7 " 692.0 " 882.3 "1558 " 168.1 " 30.39 " 1
2 6.453" 2.466" 1.833" 4.922" 15.49 "1027 " 601.3 " 627.7 " 742.2 "1333 " 258.1 " 33.71 " 2
3 6.027" 2.137" 2.202" 4.279" 13.89 " 975.2 " 521.8 " 561.3 " 645.7 "1293 " 268.6 " 31.25 " 3
4 4.729" 2.018" 3.190" 6.085" 13.95 " 619.4 " 463.2 " 505.4 " 566.9 "1353 " 253.6 " 31.58 $ 4
5 3.833" 2.225" 2.606" 6.081" 13.07 " 414.5 " 467.9 " 449.3 " 608.5 "1200 " 207.1 " 28.92 $ 5
6 3.337" 3.263" 2.543" 4.512" 13.18 " 323.0 " 499.7 " 405.8 "1346 "1083 " 183.4 " 28.64 $ 6
7 3.704" 2.651" 2.058" 6.016" 13.09 " 290.5 " 645.2 " 374.1 "1279 "1147 " 188.5 " 29.94 $ 7
8 3.269" 3.032" 1.664" 3.306" 12.41 " 361.7 " 846.2 " 345.6 "1042 "1011 " 200.7 " 28.80 $ 8
9 3.686" 2.892" 2.422" 4.478" 13.48 " 393.2 " 741.6 " 328.8 " 869.0 " 845.2 " 180.2 " 27.14 $ 9
10 3.321" 1.899" 2.190" 5.886" 11.89 "1280 " 596.9 " 412.6 " 750.5 " 747.6 " 159.5 " 26.02 $ 10
11 3.543" 1.762" 2.897" 4.648" 12.34 "1372 " 513.9 " 504.8 " 630.0 " 667.6 " 143.3 " 25.14 $ 11
12 3.906" 1.013" 3.239" 5.338" 18.87 "1045 " 464.0 "1195 " 551.1 " 586.0 " 140.6 " 24.04 $ 12
13 3.676" 1.985" 2.323" 4.728" 37.24 "2086 " 523.8 "2863 " 499.3 " 515.1 " 159.2 " 23.23 $ 13
14 3.153" 2.093" 2.679" 5.070" 51.96 "1956 " 577.4 "2287 " 457.5 " 460.8 " 156.7 " 21.83 $ 14
15 2.547" 1.451" 2.388" 5.984" 54.18 "1605 " 626.5 "2586 " 486.6 " 412.8 " 134.7 " 20.35 $ 15
16 2.860" 1.291" 2.649" 6.240" 62.42 "2536 " 654.0 "3161 " 481.5 " 374.1 " 118.5 " 19.94 $ 16
17 3.536" 1.368" 2.083" 5.620" 51.91 "2111 " 830.3 "2179 " 435.6 " 344.9 " 104.0 " 19.43 $ 17
18 3.546" 1.083" 2.563" 5.825" 45.69 "1533 "1906 "1546 " 421.0 " 321.3 " 91.07 " 19.16 $ 18
19 3.205" 1.348" 2.651" 5.883" 40.56 "1195 "1679 "1220 " 415.1 " 309.9 " 81.41 " 18.79 $ 19
20 3.133" 1.023" 3.401" 4.499" 49.60 "1603 "1149 "1068 " 416.7 " 343.8 " 74.38 " 18.02 $ 20
21 3.152" 0.922" 2.615" 8.992" 84.51 "1287 " 881.2 "1038 " 449.7 " 383.1 " 68.42 " 17.49 $ 21
22 3.401" 1.477" 2.627" 9.330" 94.02 " 905.0 " 725.0 " 870.3 "1082 " 353.3 " 64.77 " 17.39 $ 22
23 2.989" 1.360" 2.878" 9.508" 76.78 " 704.2 " 988.6 " 754.8 "1596 " 314.6 " 60.64 " 16.65 $ 23
24 2.515" 1.284" 6.120" 9.705" 62.46 "1106 "3184 " 748.9 "1228 " 275.3 " 56.92 " 16.20 $ 24
25 2.925" 1.403" 7.082" 10.00 " 56.81 "4801 &3697 "1244 " 999.7 " 248.2 " 53.85 " 16.06 $ 25
26 2.808" 1.395" 7.663" 11.46 " 54.13 "5049 &2226 "1607 " 987.9 " 228.0 " 50.76 " 15.72 $ 26
27 2.719" 1.557" 8.291" 11.80 " 51.84 "2447 "1573 "1214 " 868.0 " 211.9 " 49.37 " 15.22 $ 27
28 2.775" 1.632" 8.188" 17.53 " 51.07 "1578 "1377 " 926.2 "1019 " 199.5 " 45.70 " 11.96 $ 28
29 1.823" 1.595" 6.705" 15.69 " 50.31 "1128 "1169 "1141 "1299 " 184.9 " 42.29 " 9.938# 29
30 2.630" 5.063" 15.34 " 47.37 " 872.7 " 940.5 "1378 "1675 " 170.1 " 37.44 " 11.75 # 30
31 2.870" 5.840" 91.61 " 793.9 "1111 " 159.7 " 10.70 # 31
Mean 3.512" 1.807" 3.622" 7.444" 41.33 "1436 &1051 "1140 " 824.5 " 601.3 " 126.7 " 21.46 $
Median 3.269" 1.595" 2.649" 5.935" 47.37 "1162 & 741.6 "1038 " 746.3 " 383.1 " 126.6 " 19.94 $
Maximum 6.816" 3.263" 8.291" 17.53 " 94.02 "5049 &3697 "3161 "1675 "1558 " 268.6 " 33.71 $
Minimum 1.823" 0.922" 1.623" 3.306" 11.89 " 290.5 & 463.2 " 328.8 " 415.1 " 159.7 " 37.44 " 9.938$
Total 108.8 " 52.39" 112.2 " 223.3 " 1281 "43098 &32582 "35355 "24735 "18640 " 3802 " 665.5 $
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 438.9 & " ... Relative Uncertainty +/-10%
Ann. Median 56.86 & # ... Relative Uncertainty +/-15%
Annual Total 160658 & $ ... Relative Uncertainty +/-20%
& ... Relative Uncertainty +/-30%
Maximum Minimum
Daily 5049 & 0.922&
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1989
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 9.735# 4.504" 28.85 " 10.38 " 17.91 " 47.97 " 146.1 " 468.5 " 558.9 " 245.8 " 144.8 " 12.45 " 1
2 8.877# 5.983" 26.33 " 15.82 " 16.89 " 45.33 " 132.3 " 393.6 " 898.4 " 271.2 " 132.5 " 12.94 " 2
3 7.983# 5.440" 23.19 " 17.05 " 16.98 " 43.47 " 109.9 " 373.0 " 800.4 " 365.7 " 119.2 " 11.92 " 3
4 6.403# 4.562" 19.15 " 18.14 " 15.62 " 41.30 " 92.88 " 345.2 " 609.2 " 404.2 " 107.9 " 11.17 " 4
5 8.460" 4.371" 19.95 " 19.47 " 14.67 " 40.79 " 81.27 " 311.0 " 494.2 " 536.7 " 97.44 " 10.31 " 5
6 8.841# 4.817" 18.78 " 18.88 " 14.67 " 45.60 " 72.27 " 282.6 " 427.8 " 561.7 " 89.19 " 9.787" 6
7 7.635# 4.277" 17.00 " 17.29 " 15.93 " 45.59 " 67.62 " 259.4 " 405.4 " 507.6 " 81.34 " 9.509" 7
8 6.303# 3.373" 14.79 " 18.20 " 13.69 " 57.57 " 65.20 " 235.2 " 427.1 " 449.3 " 73.81 " 8.834" 8
9 6.288# 4.022" 14.59 " 17.80 " 13.05 " 56.89 " 65.87 " 215.3 " 410.5 " 424.2 " 68.97 " 8.061" 9
10 7.470# 4.892" 12.20 " 16.89 " 15.16 " 48.00 " 65.81 " 199.0 " 362.3 " 378.4 " 62.60 " 7.926" 10
11 6.689# 4.953" 9.960" 14.21 " 16.19 " 42.98 " 62.57 " 182.4 " 320.9 " 331.0 " 62.91 " 10.69 " 11
12 7.496# 6.497" 9.881" 13.73 " 15.99 " 42.04 " 64.38 " 169.8 " 281.0 " 295.7 " 61.25 " 8.489" 12
13 7.968# 5.628" 9.644" 12.58 " 14.09 " 46.45 " 68.47 " 168.7 " 256.1 " 277.3 " 63.80 " 6.794" 13
14 8.270# 5.369" 7.322" 13.69 " 15.71 " 49.46 " 77.35 " 172.8 " 239.0 " 274.3 " 75.06 " 6.161" 14
15 7.249# 5.683" 4.988" 12.90 " 17.84 " 49.49 " 95.76 " 168.6 " 239.9 " 278.1 " 86.15 " 4.945" 15
16 8.699# 8.680" 6.430" 14.07 " 37.41 " 48.07 " 110.8 " 158.6 " 239.1 " 256.0 " 77.81 " 4.937" 16
17 8.189# 9.333" 4.899" 13.18 " 39.08 " 44.04 " 99.73 " 165.0 " 219.8 " 254.2 " 65.07 " 5.303" 17
18 10.44 # 11.46 " 4.886" 11.11 " 31.24 " 42.29 " 88.76 "1646 " 224.3 " 360.4 " 55.68 " 6.786" 18
19 8.260# 14.49 " 5.200" 11.10 " 27.00 " 39.51 " 90.97 "2130 " 255.8 " 414.0 " 48.96 " 5.362" 19
20 6.158" 13.60 " 4.458" 9.692" 29.36 " 37.43 " 565.2 "1239 " 315.8 " 364.0 " 43.69 " 5.621" 20
21 4.878" 12.04 " 5.399" 13.59 " 39.12 " 35.51 " 846.2 " 865.8 " 340.5 " 323.5 " 40.98 " 4.684" 21
22 5.215" 8.078" 5.372" 14.06 " 51.88 " 34.56 " 578.0 " 651.6 " 342.8 " 287.3 " 37.48 " 5.462" 22
23 6.462" 6.755" 5.449" 13.63 " 57.82 " 33.68 " 409.0 " 511.1 " 342.7 " 248.9 " 34.06 " 5.075" 23
24 5.646" 6.342" 4.973" 15.26 " 48.24 " 32.82 " 792.5 " 516.1 " 343.3 " 224.2 " 29.66 " 8.529" 24
25 7.735" 8.762" 4.604" 17.20 " 42.55 " 32.27 "1477 " 462.5 " 315.6 " 208.1 " 25.60 " 10.73 " 25
26 7.321" 12.55 " 4.359" 17.38 " 38.16 " 33.56 " 994.3 " 382.5 " 275.8 " 199.3 " 24.11 " 12.20 " 26
27 7.133" 16.87 " 5.168" 17.79 " 38.80 " 33.72 " 828.5 " 339.3 " 252.5 " 190.0 " 22.16 " 13.33 " 27
28 7.365" 26.92 " 8.531" 17.91 " 42.16 " 38.33 "1249 " 310.5 " 258.2 " 181.6 " 20.24 " 12.24 " 28
29 8.958" 5.669" 18.75 " 47.23 " 46.08 "1164 " 302.2 " 276.6 " 174.9 " 18.57 " 10.62 " 29
30 11.90 " 7.356" 18.45 " 63.78 " 91.58 " 785.4 " 497.0 " 258.0 " 170.6 " 13.07 " 9.353" 30
31 9.233" 8.570" 55.56 " 593.8 " 550.9 " 157.6 " 10.41 " 31
Mean 7.718# 8.224" 10.58 " 15.34 " 29.80 " 44.21 " 385.2 " 473.4 " 366.4 " 310.2 " 62.81 " 8.732"
Median 7.635# 6.162" 7.356" 15.54 " 27.00 " 43.23 " 109.9 " 339.3 " 318.4 " 278.1 " 62.76 " 8.834"
Maximum 11.90 # 26.92 " 28.85 " 19.47 " 63.78 " 91.58 "1477 "2130 " 898.4 " 561.7 " 144.8 " 13.33 "
Minimum 4.878# 3.373" 4.359" 9.692" 13.05 " 32.27 " 62.57 " 158.6 " 219.8 " 157.6 " 13.07 " 4.684"
Total 239.2 # 230.2 " 327.9 " 460.3 " 923.9 " 1326 "11942 "14676 "10993 " 9617 " 1884 " 270.6 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 144.9 # " ... Relative Uncertainty +/-10%
Ann. Median 34.56 # # ... Relative Uncertainty +/-15%
Annual Total 52893 #
Maximum Minimum
Daily 2130 # 3.373#
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1990
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 7.649" 4.831" 3.285" 16.86 " 45.25 " 129.9 " 153.4 " 725.2 " 350.4 " 247.1 " 199.7 " 24.97 " 1
2 7.606" 5.590" 4.334" 19.50 " 46.06 " 114.5 " 147.8 "1838 " 335.7 " 224.0 " 190.5 " 23.66 " 2
3 9.011" 6.482" 3.024" 17.41 " 52.39 " 102.2 " 141.6 "2890 " 323.6 " 211.6 " 189.6 " 22.21 " 3
4 7.617" 4.692" 3.937" 18.02 " 47.36 " 93.27 " 135.5 "2838 " 298.3 " 198.8 " 165.6 " 23.33 " 4
5 8.121" 5.031" 5.982" 18.27 " 49.74 " 88.08 " 136.2 "2243 " 278.3 " 187.7 " 144.2 " 24.88 " 5
6 7.706" 3.469" 7.751" 19.80 " 49.13 " 99.74 " 130.8 "1618 " 258.3 " 183.4 " 126.8 " 21.47 " 6
7 6.194" 4.321" 12.02 " 17.81 " 46.43 " 147.0 " 118.0 "1260 " 243.2 " 173.3 " 112.5 " 21.94 " 7
8 6.008" 3.200" 13.80 " 18.11 " 47.35 " 234.9 " 111.4 "1019 " 238.4 " 165.0 " 100.4 " 22.59 " 8
9 7.047" 3.489" 10.97 " 16.71 " 41.89 " 428.7 " 111.4 " 853.1 " 231.0 " 163.5 " 90.66 " 19.59 " 9
10 7.318" 4.293" 8.764" 19.67 " 43.48 " 397.4 " 152.8 " 884.2 " 228.1 " 190.8 " 83.66 " 18.63 " 10
11 9.516" 4.271" 6.360" 23.74 " 38.63 " 491.5 " 290.6 " 955.4 " 219.7 " 202.7 " 74.82 " 15.31 " 11
12 8.559" 4.887" 7.598" 29.48 " 37.31 " 460.9 "1030 " 854.5 " 205.1 " 185.2 " 69.74 " 12.00 " 12
13 9.575" 5.805" 7.995" 29.08 " 39.99 " 468.8 "2923 " 800.5 " 195.8 " 180.7 " 62.17 " 11.08 " 13
14 10.11 " 7.008" 7.237" 26.15 " 76.54 "1875 "2205 " 724.6 " 184.5 " 191.5 " 58.13 " 10.21 " 14
15 7.699" 12.43 " 5.943" 23.52 " 179.2 "1739 "2512 " 629.4 " 175.5 " 188.5 " 55.80 " 8.892" 15
16 6.018" 14.62 " 3.566" 21.92 " 148.5 " 983.0 "3577 " 551.0 " 184.8 " 180.0 " 55.65 " 7.956" 16
17 4.663" 14.85 " 3.571" 20.14 " 117.3 " 642.9 "4454 " 501.7 " 290.7 " 184.2 " 55.30 " 10.14 " 17
18 6.271" 13.24 " 4.281" 19.54 " 98.98 " 492.7 "2411 " 522.5 " 348.0 " 191.4 " 57.56 " 9.285" 18
19 4.570" 13.49 " 3.946" 24.19 " 88.79 " 415.6 "1739 " 765.0 " 340.3 " 178.4 " 60.79 " 6.558" 19
20 3.672" 8.370" 3.937" 29.04 " 80.36 " 368.0 "1984 " 805.6 " 319.9 " 161.4 " 63.32 " 8.145" 20
21 7.162" 8.784" 3.115" 28.45 " 71.20 " 361.4 "4648 & 729.3 " 287.9 " 147.6 " 59.14 " 10.64 " 21
22 6.633" 6.310" 5.024" 28.20 " 64.13 " 278.3 "7955 & 615.5 " 263.7 " 138.9 " 55.74 " 9.292" 22
23 11.79 " 5.187" 5.146" 30.69 " 60.00 " 247.3 "5625 " 537.6 " 300.6 " 128.1 " 52.43 " 7.656" 23
24 10.33 " 6.294" 4.616" 36.83 " 55.83 " 227.0 "4079 " 475.6 " 468.3 " 116.3 " 47.42 " 6.789" 24
25 8.265" 3.503" 6.209" 37.86 " 53.71 " 209.1 "3110 " 434.9 " 617.0 " 109.1 " 40.80 " 10.68 " 25
26 8.239" 3.948" 12.37 " 41.29 " 55.45 " 196.0 "2347 " 408.2 " 525.2 " 100.4 " 37.20 " 8.248" 26
27 5.995" 4.254" 18.40 " 51.31 " 64.39 " 182.7 "1726 " 388.4 " 417.2 " 94.28 " 36.64 " 9.970" 27
28 4.530" 3.924" 21.82 " 44.96 " 141.3 " 169.9 "1349 " 412.0 " 350.1 " 89.56 " 32.05 " 7.288" 28
29 8.100" 21.07 " 43.14 " 219.0 " 161.6 "1112 " 420.7 " 310.1 " 103.5 " 26.61 " 5.827" 29
30 7.922" 17.78 " 43.22 " 192.7 " 157.2 " 963.7 " 409.3 " 275.8 " 186.4 " 24.78 " 4.259" 30
31 5.848" 15.73 " 153.3 " 832.8 " 380.5 " 237.4 " 6.223" 31
Mean 7.412" 6.664" 8.375" 27.16 " 80.84 " 398.8 "1878 & 919.1 " 302.2 " 169.0 " 81.00 " 13.21 "
Median 7.617" 5.109" 6.209" 23.96 " 55.83 " 241.1 "1349 & 725.2 " 289.3 " 180.7 " 59.97 " 10.21 "
Maximum 11.79 " 14.85 " 21.82 " 51.31 " 219.0 "1875 "7955 &2890 " 617.0 " 247.1 " 199.7 " 24.97 "
Minimum 3.672" 3.200" 3.024" 16.71 " 37.31 " 88.08 " 111.4 & 380.5 " 175.5 " 89.56 " 24.78 " 4.259"
Total 229.7 " 186.5 " 259.6 " 815.0 " 2506 "11966 "58222 &28495 " 9066 " 5242 " 2430 " 409.7 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 328.3 & " ... Relative Uncertainty +/-10%
Ann. Median 60.00 & & ... Relative Uncertainty +/-30%
Annual Total 119829 &
Maximum Minimum
Daily 7955 & 3.024&
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1991
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 8.680" 2.873" 14.10 " 13.77 " 14.72 " 268.1 " 524.9 "3567 " 494.6 " 418.5 " 88.33 " 31.10 " 1
2 8.239" 2.781" 13.37 " 14.67 " 15.56 " 208.6 " 994.6 "7863 & 456.4 " 394.4 " 88.12 " 30.85 " 2
3 9.433" 2.972" 7.580" 11.22 " 14.54 " 201.8 "1950 "6564 & 436.0 " 353.3 " 86.38 " 27.62 " 3
4 9.127" 3.154" 6.387" 7.407" 17.33 " 847.8 "2722 "5812 & 460.4 " 323.6 " 89.80 " 24.10 " 4
5 8.539" 3.767" 5.491" 7.021" 17.97 " 846.9 "2080 "3790 " 480.2 " 305.6 " 108.3 " 25.65 " 5
6 5.557" 2.615" 6.070" 7.675" 17.34 " 571.1 "2093 "2523 " 444.9 " 297.3 " 125.5 " 23.63 " 6
7 7.954" 2.010" 5.573" 6.852" 17.75 " 400.8 "1517 "1906 " 484.2 " 276.0 " 117.4 " 23.12 " 7
8 8.274" 3.055" 5.600" 6.814" 17.18 " 308.2 "1068 "1523 " 705.8 " 254.6 " 103.8 " 19.98 " 8
9 6.177" 4.270" 3.987" 10.87 " 16.05 " 256.0 " 837.7 "1247 "1356 " 234.3 " 184.4 " 17.37 " 9
10 5.772" 3.523" 9.867" 18.34 " 16.47 " 225.1 " 715.3 "1047 "1233 " 217.0 " 134.2 " 15.76 " 10
11 4.970" 2.832" 8.279" 22.41 " 16.87 " 256.7 " 593.1 " 896.6 " 928.1 " 201.5 " 93.80 " 17.11 " 11
12 5.016" 3.643" 9.631" 23.30 " 14.96 " 260.9 " 506.7 " 780.3 " 979.7 " 187.2 " 81.85 " 12.41 " 12
13 3.334" 1.994" 6.509" 27.16 " 14.45 " 264.0 " 569.1 " 684.3 "1166 " 174.3 " 80.43 " 10.56 " 13
14 4.231" 2.027" 4.858" 24.47 " 14.19 " 351.6 " 626.4 " 569.2 "1777 " 161.9 " 85.37 " 8.734" 14
15 4.623" 2.562" 6.576" 21.88 " 20.87 " 470.2 " 723.6 " 504.7 "1739 " 148.4 " 98.39 " 7.894" 15
16 4.490" 3.751" 5.796" 23.36 " 31.45 " 445.1 "3400 " 465.5 "1531 " 138.3 " 107.5 " 7.299" 16
17 5.889" 3.930" 4.519" 22.36 " 25.00 " 501.3 "2987 " 435.4 "1267 " 130.8 " 105.0 " 6.513" 17
18 4.316" 2.959" 4.310" 19.40 " 22.60 " 534.9 "2177 " 515.6 "1082 " 130.3 " 98.74 " 6.428" 18
19 3.220" 2.794" 5.398" 17.11 " 23.90 " 445.0 "1557 " 652.9 "1169 " 193.4 " 87.35 " 8.274" 19
20 3.338" 1.822" 5.925" 17.45 " 25.64 " 385.7 "1159 " 694.6 "1149 " 284.9 " 77.20 " 7.716" 20
21 2.804" 2.418" 5.771" 16.64 " 41.36 " 430.8 " 972.1 " 623.7 " 940.9 " 289.1 " 68.98 " 3.916" 21
22 3.384" 2.766" 5.904" 16.82 " 83.59 " 588.3 " 840.2 " 559.9 " 776.0 " 245.8 " 63.31 " 6.528" 22
23 3.011" 2.150" 5.564" 16.25 " 97.26 "1452 " 889.7 " 506.7 " 641.1 " 205.8 " 57.84 " 8.017" 23
24 5.338" 3.166" 6.286" 16.54 " 93.15 "1349 "2021 " 457.6 " 560.2 " 177.9 " 52.05 " 10.09 " 24
25 4.251" 5.036" 4.436" 16.41 " 77.07 " 883.8 "2387 " 418.6 " 499.7 " 155.8 " 44.48 " 15.38 " 25
26 4.131" 8.036" 5.084" 16.66 " 63.44 " 667.0 "1785 " 473.3 " 450.7 " 139.4 " 40.01 " 18.02 " 26
27 5.279" 13.67 " 6.623" 15.94 " 57.87 " 824.9 "1561 " 795.3 " 409.6 " 126.9 " 39.28 " 17.77 " 27
28 3.807" 15.96 " 7.834" 14.93 " 56.92 "1114 "1249 " 797.9 " 378.2 " 116.7 " 38.54 " 21.19 " 28
29 3.138" 9.620" 16.48 " 101.7 " 852.6 "1425 " 716.8 " 353.1 " 108.4 " 35.30 " 14.85 " 29
30 1.737" 9.469" 15.12 " 272.5 " 631.0 "2335 " 608.7 " 353.3 " 100.6 " 32.27 " 11.88 " 30
31 2.247" 12.06 " 325.0 " 2071 " 530.7 " 94.79 " 12.07 " 31
Mean 5.171" 4.020" 7.048" 16.18 " 53.06 " 561.5 "1495 "1565 & 823.6 " 212.5 " 83.81 " 15.22 "
Median 4.623" 2.965" 6.070" 16.51 " 22.60 " 457.7 "1425 " 694.6 & 673.5 " 193.4 " 86.86 " 14.85 "
Maximum 9.433" 15.96 " 14.10 " 27.16 " 325.0 "1452 "3400 "7863 &1777 " 418.5 " 184.4 " 31.10 "
Minimum 1.737" 1.822" 3.987" 6.814" 14.19 " 201.8 " 506.7 " 418.6 & 353.1 " 94.79 " 32.27 " 3.916"
Total 160.3 " 112.5 " 218.4 " 485.4 " 1644 "16845 "46350 "48535 &24708 " 6588 " 2514 " 471.9 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 407.2 & " ... Relative Uncertainty +/-10%
Ann. Median 63.31 & & ... Relative Uncertainty +/-30%
Annual Total 148636 &
Maximum Minimum
Daily 7863 & 1.737&
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1992
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 8.924" 3.120" 4.236" 12.00 " 17.12 " 56.97 "2094 " 717.0 "1435 " 293.3 " 57.04 " 61.50 " 1
2 11.61 " 3.016" 3.443" 13.11 " 17.66 " 50.98 "1982 " 619.8 "1196 " 278.6 " 52.86 " 61.17 " 2
3 9.119" 3.238" 2.569" 15.17 " 19.82 " 46.95 "1667 " 567.8 "1680 " 267.8 " 49.26 " 60.06 " 3
4 8.007" 2.900" 5.005" 14.98 " 23.14 " 44.18 "1262 " 552.8 "1764 " 264.8 " 45.83 " 56.38 " 4
5 6.489" 3.164" 4.232" 13.74 " 24.82 " 42.17 "1202 " 607.7 "1497 " 260.1 " 43.83 " 48.33 " 5
6 6.313" 2.620" 6.791" 10.94 " 25.02 " 40.39 "1056 " 683.4 "1324 " 253.5 " 42.81 " 41.36 " 6
7 6.354" 3.774" 6.559" 12.99 " 29.45 " 38.24 " 861.8 " 841.7 "1097 " 244.5 " 46.65 " 40.38 " 7
8 4.094" 7.915" 5.713" 15.61 " 32.23 " 36.73 " 728.9 " 811.4 "1174 " 230.6 " 49.28 " 38.00 " 8
9 4.423" 12.67 " 7.084" 16.03 " 34.98 " 35.55 " 638.8 " 986.4 "3122 " 217.4 " 54.17 " 35.77 " 9
10 5.374" 16.84 " 7.305" 15.15 " 32.57 " 35.03 " 705.0 "1784 "2978 " 208.3 " 52.88 " 33.37 " 10
11 5.105" 13.15 " 5.856" 15.37 " 30.02 " 52.79 " 818.3 "2070 "1935 " 199.9 " 47.43 " 29.25 " 11
12 5.110" 11.23 " 5.923" 15.28 " 28.43 " 192.4 " 694.9 "2132 "1428 " 194.6 " 36.44 " 27.13 " 12
13 4.473" 12.13 " 6.882" 14.47 " 27.16 " 367.0 "1540 "1575 "1123 " 186.9 " 43.04 " 24.02 " 13
14 4.219" 13.16 " 6.014" 13.59 " 26.79 " 271.4 "2317 "1339 " 943.9 " 178.8 " 48.10 " 25.38 " 14
15 3.488" 12.66 " 5.552" 11.53 " 25.79 " 280.5 "1652 "1187 " 820.3 " 166.6 " 58.40 " 21.70 " 15
16 3.453" 10.04 " 11.77 " 11.69 " 24.72 " 398.8 "1176 "1126 " 751.2 " 155.3 " 84.51 " 20.30 " 16
17 3.404" 11.06 " 12.81 " 11.24 " 23.81 " 561.1 "1645 "1067 " 711.8 " 146.3 " 84.96 " 18.92 " 17
18 3.401" 9.508" 11.79 " 11.75 " 23.36 "1025 "1559 " 940.9 " 630.8 " 138.4 " 81.48 " 16.52 " 18
19 6.079" 7.230" 15.68 " 13.95 " 26.16 " 736.2 "1180 " 812.8 " 555.6 " 125.2 " 86.96 " 17.35 " 19
20 9.383" 6.519" 15.77 " 13.54 " 26.14 " 519.6 "1028 " 728.2 " 500.5 " 120.9 " 125.6 " 16.51 " 20
21 7.340" 7.472" 17.73 " 14.45 " 28.97 " 632.2 " 862.8 " 676.4 " 475.2 " 110.3 " 201.2 " 14.86 " 21
22 6.739" 5.754" 19.01 " 13.23 " 29.50 " 798.9 " 723.5 " 660.8 " 554.8 " 100.8 " 191.7 " 11.67 " 22
23 9.210" 6.559" 20.45 " 13.41 " 35.44 " 578.6 " 616.5 " 592.6 " 621.5 " 93.85 " 151.2 " 11.72 " 23
24 9.277" 5.104" 20.06 " 14.63 " 49.14 " 823.0 " 538.3 " 547.1 " 561.5 " 86.90 " 122.5 " 9.207" 24
25 7.238" 8.712" 18.67 " 14.45 " 68.32 "1026 " 617.5 " 623.8 " 490.4 " 80.40 " 103.7 " 9.284" 25
26 5.160" 6.133" 17.89 " 13.90 " 74.21 "1438 " 988.8 " 900.5 " 443.3 " 77.58 " 88.97 " 12.10 " 26
27 3.979" 4.366" 16.75 " 14.60 " 63.88 "1574 "1045 "1124 " 406.3 " 74.72 " 76.78 " 11.40 " 27
28 3.789" 3.705" 14.20 " 16.90 " 55.95 "3378 "1131 "2434 " 376.1 " 72.41 " 67.79 " 8.189" 28
29 3.595" 4.963" 13.48 " 17.31 " 55.57 "3439 "1195 "2414 " 339.4 " 71.45 " 63.45 " 8.012" 29
30 3.223" 14.16 " 17.84 " 62.43 "2044 " 980.7 "1633 " 314.0 " 66.31 " 62.40 " 8.708" 30
31 3.134" 9.849" 62.86 " 818.1 "1546 " 62.48 " 9.829" 31
Mean 5.855" 7.543" 10.75 " 14.09 " 35.66 " 685.5 "1139 "1106 "1041 " 162.2 " 77.38 " 26.08 "
Median 5.160" 6.559" 9.849" 14.20 " 28.97 " 382.9 "1045 " 900.5 " 785.8 " 155.3 " 60.40 " 20.30 "
Maximum 11.61 " 16.84 " 20.45 " 17.84 " 74.21 "3439 "2317 "2434 "3122 " 293.3 " 201.2 " 61.50 "
Minimum 3.134" 2.620" 2.569" 10.94 " 17.12 " 35.03 " 538.3 " 547.1 " 314.0 " 62.48 " 36.44 " 8.012"
Total 181.5 " 218.7 " 333.3 " 422.9 " 1105 "20567 "35332 "34309 "31258 " 5030 " 2321 " 808.4 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 360.3 " " ... Relative Uncertainty +/-10%
Ann. Median 46.80 "
Annual Total 131889 "
Maximum Minimum
Daily 3439 " 2.569"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1993
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 7.967" 3.073" 2.791" 21.98 " 20.90 " 56.61 " 114.0 "1111 " 408.8 " 368.6 " 110.9 " 20.56 " 1
2 9.467" 2.282" 2.150" 21.53 " 21.99 " 50.95 " 160.0 " 817.9 " 363.4 " 495.9 " 104.2 " 20.62 " 2
3 9.084" 2.648" 3.380" 31.62 " 22.49 " 47.47 " 242.6 " 649.0 " 332.7 " 506.1 " 96.52 " 19.37 " 3
4 7.964" 2.548" 2.278" 41.87 " 22.83 " 46.84 " 206.9 " 663.1 " 829.0 " 431.0 " 84.76 " 18.87 " 4
5 7.867" 2.541" 4.736" 54.28 " 23.47 " 43.14 " 161.6 " 842.3 "1171 " 371.2 " 78.27 " 15.34 " 5
6 6.357" 2.440" 4.859" 49.65 " 23.27 " 40.82 " 143.4 "2009 "1009 " 329.3 " 70.54 " 15.14 " 6
7 5.675" 2.519" 3.208" 41.58 " 23.23 " 38.92 " 123.9 "2718 "1286 " 313.8 " 63.86 " 11.81 " 7
8 3.512" 3.435" 2.642" 37.66 " 23.37 " 37.83 " 111.1 "1891 "1709 " 311.1 " 58.85 " 12.91 " 8
9 3.081" 2.177" 4.533" 34.74 " 23.20 " 36.75 " 109.1 "1710 "1410 " 299.0 " 63.56 " 12.47 " 9
10 4.021" 2.688" 3.692" 34.27 " 22.77 " 36.90 " 262.7 "1399 " 991.3 " 267.8 " 75.31 " 11.84 " 10
11 3.586" 2.835" 3.237" 32.69 " 21.27 " 38.57 " 997.4 "1034 " 770.3 " 247.1 " 83.50 " 9.854" 11
12 2.843" 3.046" 2.699" 35.71 " 21.62 " 36.89 "1467 "1208 " 824.6 " 224.6 " 84.24 " 9.952" 12
13 2.924" 1.997" 2.432" 33.51 " 20.86 " 35.55 " 931.9 "1108 "1374 " 203.5 " 77.52 " 9.652" 13
14 4.633" 2.175" 3.816" 30.15 " 19.98 " 33.93 " 593.4 " 875.6 "1181 " 188.7 " 70.59 " 9.918" 14
15 2.951" 1.617" 6.392" 28.17 " 18.48 " 33.91 " 483.9 " 737.1 " 873.1 " 178.2 " 65.55 " 8.803" 15
16 3.950" 1.924" 5.135" 27.61 " 19.98 " 43.95 " 482.3 " 664.2 " 977.7 " 168.7 " 58.94 " 6.907" 16
17 3.987" 1.892" 4.533" 26.86 " 20.97 " 48.86 " 483.0 " 582.0 "1090 " 166.2 " 53.54 " 6.067" 17
18 4.570" 1.973" 7.146" 28.47 " 25.77 " 54.27 " 390.4 " 516.4 "1077 " 336.4 " 49.80 " 6.029" 18
19 5.983" 1.979" 18.57 " 26.54 " 32.42 " 51.17 " 318.8 " 458.9 "1021 " 214.2 " 46.16 " 4.552" 19
20 4.158" 2.511" 39.63 " 25.68 " 49.90 " 49.54 " 270.8 " 411.9 " 848.8 " 164.1 " 41.22 " 4.555" 20
21 3.670" 2.035" 127.8 " 25.28 " 69.45 " 48.57 " 240.8 " 373.1 " 711.2 " 144.7 " 39.10 " 4.873" 21
22 3.104" 2.486" 96.98 " 24.40 " 63.99 " 46.83 " 546.3 " 336.4 " 606.3 " 131.4 " 34.11 " 5.072" 22
23 3.536" 2.735" 68.26 " 24.97 " 54.49 " 44.75 "1009 " 311.9 " 548.7 " 121.5 " 30.83 " 5.115" 23
24 3.322" 2.891" 50.87 " 29.88 " 47.04 " 42.19 " 692.9 " 286.6 " 509.3 " 118.5 " 26.77 " 4.025" 24
25 2.723" 2.739" 40.81 " 23.87 " 45.23 " 40.15 " 519.7 " 293.1 " 451.8 " 119.2 " 26.67 " 4.321" 25
26 2.173" 3.300" 35.49 " 23.62 " 39.64 " 40.64 " 692.9 " 337.0 " 400.8 " 119.9 " 27.10 " 5.585" 26
27 1.340" 3.331" 30.91 " 22.65 " 37.82 " 50.22 "1312 " 320.2 " 359.7 " 119.7 " 25.51 " 5.252" 27
28 1.965" 2.716" 28.16 " 22.49 " 40.43 " 80.46 "1519 " 293.6 " 329.7 " 121.3 " 22.40 " 8.351" 28
29 2.143" 25.88 " 22.08 " 44.24 " 118.8 "1515 " 304.6 " 316.7 " 125.8 " 22.55 " 6.131" 29
30 2.163" 25.16 " 21.53 " 47.39 " 118.5 "1789 " 407.7 " 344.9 " 120.9 " 23.68 " 6.348" 30
31 3.162" 23.75 " 55.08 " 1417 " 448.7 " 116.6 " 3.681" 31
Mean 4.319" 2.519" 22.00 " 30.18 " 33.02 " 49.80 " 622.9 " 810.4 " 804.4 " 230.5 " 57.22 " 9.484"
Median 3.586" 2.530" 5.135" 27.89 " 23.37 " 44.35 " 483.0 " 649.0 " 826.8 " 188.7 " 58.90 " 8.351"
Maximum 9.467" 3.435" 127.8 " 54.28 " 69.45 " 118.8 "1789 "2718 "1709 " 506.1 " 110.9 " 20.62 "
Minimum 1.340" 1.617" 2.150" 21.53 " 18.48 " 33.91 " 109.1 " 286.6 " 316.7 " 116.6 " 22.40 " 3.681"
Total 133.8 " 70.53" 682.0 " 905.4 " 1023 " 1494 "19312 "25125 "24133 " 7146 " 1716 " 294.0 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 224.7 " " ... Relative Uncertainty +/-10%
Ann. Median 40.15 "
Annual Total 82038 "
Maximum Minimum
Daily 2718 " 1.340"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1994
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 5.062" 1.860" 3.334" 6.055" 12.36 " 116.3 "1262 " 364.2 " 300.4 " 155.2 " 36.07 " 13.03 " 1
2 5.649" 3.344" 3.526" 7.726" 11.27 " 122.8 "1437 " 338.3 " 311.2 " 157.4 " 34.26 " 11.79 " 2
3 3.830" 3.331" 3.252" 6.286" 10.17 " 157.0 "1093 " 357.6 " 381.4 " 152.6 " 32.87 " 10.43 " 3
4 3.404" 3.107" 2.529" 5.688" 8.823" 129.0 " 951.5 " 849.3 " 361.8 " 147.3 " 31.94 " 10.22 " 4
5 4.119" 2.381" 2.947" 6.629" 9.505" 101.8 " 879.7 "1102 " 326.7 " 141.7 " 28.95 " 9.190" 5
6 3.146" 2.681" 3.257" 6.024" 9.400" 85.82 "1173 " 837.0 " 299.5 " 130.7 " 24.74 " 11.86 " 6
7 3.048" 3.214" 3.966" 6.703" 9.872" 78.19 "1220 " 645.4 " 293.0 " 122.1 " 23.84 " 8.960" 7
8 3.328" 4.059" 5.713" 6.923" 10.28 " 75.66 "1683 " 537.2 " 276.9 " 113.1 " 24.55 " 9.321" 8
9 3.939" 3.732" 4.369" 7.316" 11.40 " 137.4 "2062 " 472.5 " 251.9 " 106.3 " 23.90 " 7.624" 9
10 4.565" 8.044" 3.740" 7.044" 10.31 " 161.4 "1438 " 463.8 " 267.7 " 99.13 " 21.46 " 6.918" 10
11 4.554" 5.863" 3.254" 6.736" 10.52 " 151.6 " 984.7 " 956.7 " 560.6 " 88.46 " 21.82 " 10.12 " 11
12 4.151" 5.473" 2.492" 4.830" 8.312" 159.1 " 744.1 "1322 " 592.0 " 86.06 " 20.11 " 8.156" 12
13 3.543" 4.546" 3.738" 5.974" 10.81 " 145.6 " 679.4 " 935.7 " 488.2 " 82.12 " 19.06 " 7.945" 13
14 3.190" 4.893" 3.766" 5.026" 13.35 " 128.1 " 818.8 " 702.2 " 430.2 " 87.10 " 18.90 " 6.524" 14
15 3.525" 5.141" 5.756" 6.569" 15.73 " 109.7 " 848.0 " 583.7 " 369.8 " 96.89 " 17.69 " 8.566" 15
16 3.474" 3.987" 4.128" 6.434" 17.06 " 97.28 "1448 " 502.6 " 321.9 " 97.50 " 16.01 " 8.706" 16
17 2.984" 5.307" 4.747" 7.467" 16.63 " 89.88 "2108 " 438.9 " 289.7 " 89.48 " 16.57 " 6.795" 17
18 3.104" 3.958" 3.665" 5.710" 16.77 " 84.83 "1581 " 392.6 " 263.1 " 79.57 " 14.16 " 5.878" 18
19 3.052" 3.251" 3.070" 6.668" 16.69 " 104.2 "1064 " 353.4 " 238.1 " 72.57 " 14.51 " 5.147" 19
20 2.400" 2.974" 3.069" 6.832" 18.87 " 136.5 " 816.7 " 321.9 " 217.3 " 66.98 " 11.76 " 6.403" 20
21 1.842" 3.157" 3.741" 6.883" 21.85 " 222.5 " 682.3 " 307.3 " 201.0 " 62.23 " 11.28 " 5.353" 21
22 2.392" 3.504" 5.218" 5.416" 22.09 " 337.3 " 982.6 " 680.5 " 185.6 " 60.45 " 12.00 " 6.350" 22
23 2.257" 4.030" 4.741" 9.032" 26.95 " 293.0 "1088 " 485.4 " 173.2 " 57.68 " 11.87 " 5.341" 23
24 3.259" 3.376" 6.040" 10.42 " 35.81 " 239.5 " 991.7 " 396.3 " 161.1 " 55.72 " 13.18 " 4.275" 24
25 2.690" 3.671" 6.326" 11.24 " 40.98 " 206.4 " 812.1 " 348.1 " 149.9 " 53.41 " 11.75 " 4.500" 25
26 3.287" 2.484" 5.930" 12.10 " 37.12 " 190.6 " 652.0 " 327.0 " 143.0 " 50.75 " 11.55 " 4.801" 26
27 2.620" 3.300" 5.656" 12.98 " 32.05 " 281.4 " 547.5 " 399.7 " 137.1 " 49.00 " 12.98 " 5.353" 27
28 2.386" 3.024" 6.056" 12.73 " 29.10 " 361.3 " 489.9 " 478.1 " 132.0 " 46.57 " 15.10 " 6.338" 28
29 2.484" 8.637" 11.98 " 40.88 " 582.5 " 456.4 " 417.3 " 130.3 " 41.95 " 15.09 " 6.261" 29
30 1.973" 8.468" 11.18 " 75.43 " 844.4 " 420.2 " 358.7 " 138.4 " 39.27 " 12.88 " 5.782" 30
31 1.854" 7.452" 123.1 " 389.8 " 324.5 " 40.17 " 5.630" 31
Mean 3.262" 3.846" 4.600" 7.754" 23.66 " 197.7 "1026 " 548.4 " 279.8 " 88.06 " 19.36 " 7.535"
Median 3.190" 3.440" 3.966" 6.784" 16.63 " 141.5 " 982.6 " 463.8 " 272.3 " 86.06 " 17.13 " 6.795"
Maximum 5.649" 8.044" 8.637" 12.98 " 123.1 " 844.4 "2108 "1322 " 592.0 " 157.4 " 36.07 " 13.03 "
Minimum 1.842" 1.860" 2.492" 4.830" 8.312" 75.66 " 389.8 " 307.3 " 130.3 " 39.27 " 11.28 " 4.275"
Total 101.1 " 107.6 " 142.5 " 232.6 " 733.6 " 5932 "31810 "17001 " 8394 " 2729 " 580.9 " 233.5 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 186.3 " " ... Relative Uncertainty +/-10%
Ann. Median 16.69 "
Annual Total 68001 "
Maximum Minimum
Daily 2108 " 1.842"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1995
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 5.828" 2.468" 2.868" 5.095" 13.03 " 34.65 " 107.9 "1107 " 451.4 " 142.7 " 62.34 " 16.59 " 1
2 4.531" 1.946" 2.594" 4.105" 11.16 " 34.85 " 100.7 " 877.4 " 440.2 " 133.1 " 68.70 " 15.66 " 2
3 4.357" 2.617" 3.068" 3.194" 12.13 " 33.49 " 95.87 " 726.2 " 812.9 " 125.0 " 70.73 " 13.29 " 3
4 4.330" 3.301" 2.951" 4.170" 11.74 " 31.85 " 93.22 " 592.7 "1285 " 118.4 " 67.94 " 13.64 " 4
5 4.725" 2.673" 2.226" 4.273" 12.25 " 32.25 " 92.88 " 494.1 "1021 " 112.1 " 63.61 " 13.51 " 5
6 4.503" 2.372" 2.416" 4.851" 12.62 " 38.44 " 112.8 " 433.8 " 906.2 " 107.6 " 61.52 " 11.58 " 6
7 3.676" 2.855" 2.761" 4.096" 12.74 " 55.41 " 143.1 " 389.8 "1084 " 102.5 " 57.44 " 10.66 " 7
8 3.870" 2.555" 2.345" 4.486" 11.53 " 112.3 " 599.5 " 361.3 " 947.2 " 97.73 " 54.38 " 10.21 " 8
9 3.239" 2.007" 2.357" 4.334" 13.29 " 198.9 "1230 " 753.6 " 792.9 " 96.38 " 52.31 " 8.896" 9
10 3.557" 1.638" 2.059" 5.291" 17.49 " 197.9 "1183 "1227 " 704.8 " 95.96 " 51.25 " 8.309" 10
11 3.302" 2.373" 2.760" 6.294" 20.80 " 155.5 " 804.3 "1071 " 608.0 " 106.7 " 48.28 " 6.705" 11
12 3.006" 2.161" 2.584" 4.976" 22.55 " 127.2 " 944.0 " 928.7 " 549.9 " 133.9 " 46.94 " 7.297" 12
13 3.206" 2.247" 2.122" 6.870" 23.80 " 111.1 "1557 "1320 " 525.9 " 142.7 " 42.88 " 8.521" 13
14 2.980" 2.371" 2.851" 9.324" 24.32 " 100.4 "1158 "1308 " 484.0 " 130.8 " 39.55 " 7.636" 14
15 3.135" 2.723" 3.005" 9.026" 26.01 " 90.71 " 855.1 " 979.5 " 462.0 " 117.4 " 38.35 " 8.023" 15
16 2.495" 2.667" 2.546" 11.21 " 23.47 " 83.33 " 665.5 " 770.6 " 424.6 " 103.6 " 37.32 " 9.532" 16
17 2.838" 2.253" 2.500" 12.89 " 28.21 " 75.83 " 533.8 " 874.1 " 365.5 " 104.4 " 32.43 " 8.326" 17
18 2.956" 2.692" 2.163" 14.69 " 38.57 " 68.88 " 458.7 "1184 " 342.2 " 186.2 " 30.39 " 8.770" 18
19 2.677" 1.677" 2.020" 16.89 " 32.09 " 66.32 " 941.7 "1035 " 339.5 " 272.8 " 29.76 " 7.032" 19
20 2.954" 1.820" 2.644" 15.23 " 29.99 " 63.47 "2886 "1117 " 330.0 " 217.0 " 25.73 " 8.078" 20
21 3.185" 2.019" 2.824" 12.17 " 28.64 " 60.40 "3453 "1050 " 304.1 " 164.5 " 24.11 " 10.34 " 21
22 2.908" 2.099" 2.644" 13.27 " 29.73 " 64.20 "2015 "1026 " 276.3 " 134.0 " 18.71 " 11.69 " 22
23 2.346" 2.069" 2.373" 12.74 " 40.28 " 90.13 "1274 " 982.2 " 255.9 " 115.2 " 20.27 " 12.45 " 23
24 2.841" 1.794" 3.313" 12.95 " 46.32 " 149.3 "1146 " 983.9 " 233.0 " 100.2 " 20.30 " 18.72 " 24
25 2.644" 2.467" 5.335" 12.11 " 42.02 " 160.5 "1664 " 948.4 " 215.2 " 89.34 " 18.85 " 153.6 " 25
26 2.894" 3.229" 4.096" 10.83 " 38.63 " 176.6 "1587 " 857.6 " 197.3 " 81.74 " 21.17 " 64.98 " 26
27 2.402" 2.411" 2.787" 11.79 " 35.51 " 184.9 "1168 " 766.0 " 183.4 " 73.18 " 19.42 " 41.02 " 27
28 2.234" 1.940" 4.522" 11.70 " 37.84 " 153.5 " 973.9 " 663.5 " 171.4 " 67.07 " 20.18 " 31.92 " 28
29 2.309" 4.747" 11.62 " 39.32 " 134.4 "1455 " 583.0 " 161.6 " 63.28 " 19.18 " 36.55 " 29
30 2.447" 4.071" 11.75 " 35.80 " 117.1 "2038 " 527.5 " 152.5 " 62.09 " 19.61 " 28.65 " 30
31 2.004" 3.908" 34.45 " 1571 " 490.5 " 62.57 " 30.31 " 31
Mean 3.238" 2.337" 2.950" 9.077" 26.01 " 100.1 "1061 " 852.7 " 501.0 " 118.0 " 39.46 " 20.73 "
Median 2.980" 2.371" 2.760" 10.07 " 26.01 " 90.42 " 973.9 " 877.4 " 432.4 " 107.6 " 37.83 " 11.58 "
Maximum 5.828" 3.301" 5.335" 16.89 " 46.32 " 198.9 "3453 "1320 "1285 " 272.8 " 70.73 " 153.6 "
Minimum 2.004" 1.638" 2.020" 3.194" 11.16 " 31.85 " 92.88 " 361.3 " 152.5 " 62.09 " 18.71 " 6.705"
Total 100.3 " 65.44" 91.46" 272.3 " 806.4 " 3004 "32917 "26436 "15031 " 3661 " 1183 " 642.6 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 230.7 " " ... Relative Uncertainty +/-10%
Ann. Median 32.25 "
Annual Total 84213 "
Maximum Minimum
Daily 3453 " 1.638"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1996
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 28.45 " 7.226" 2.903" 8.645" 10.80 " 103.5 " 774.8 "6425 & 707.0 " 980.7 " 139.3 " 47.60 " 1
2 25.50 " 6.459" 3.262" 10.51 " 11.66 " 75.84 " 677.4 "4326 " 618.8 " 853.4 " 126.3 " 47.58 " 2
3 21.53 " 6.807" 4.108" 9.370" 12.70 " 51.87 "1370 "2632 " 598.4 " 731.5 " 117.5 " 44.64 " 3
4 18.02 " 5.027" 3.669" 8.055" 13.00 " 44.85 "1653 "2034 " 654.6 " 636.8 " 109.7 " 48.29 " 4
5 14.33 " 3.996" 2.909" 7.375" 14.17 " 39.39 " 984.5 "1963 " 563.8 " 555.5 " 100.2 " 46.37 " 5
6 12.05 " 3.938" 2.913" 7.674" 16.44 " 34.61 " 664.5 "1990 " 575.7 " 492.0 " 98.70 " 43.33 " 6
7 9.497" 3.724" 3.770" 6.181" 16.16 " 30.89 " 565.3 "1637 " 678.7 " 450.8 " 96.57 " 40.66 " 7
8 9.887" 6.609" 3.427" 7.855" 20.06 " 28.89 "1090 "1301 " 679.1 " 410.3 " 95.14 " 35.82 " 8
9 9.889" 4.860" 3.744" 9.819" 21.42 " 28.61 "1110 "1097 " 638.3 " 377.8 " 92.99 " 35.57 " 9
10 9.707" 3.961" 4.012" 11.56 " 22.17 " 33.15 " 757.7 "1363 "1170 " 366.2 " 84.32 " 34.09 " 10
11 9.513" 4.092" 7.580" 6.947" 21.57 " 39.42 " 561.2 "2719 "3477 " 372.7 " 76.10 " 34.14 " 11
12 7.775" 3.722" 5.624" 12.05 " 19.81 " 55.54 " 463.4 "2675 "2594 " 338.8 " 69.16 " 41.17 " 12
13 6.627" 3.481" 4.520" 10.93 " 18.66 " 51.31 " 415.4 "4010 "1669 " 306.0 " 62.26 " 49.40 " 13
14 6.688" 3.709" 7.011" 12.42 " 18.41 " 47.10 " 368.2 "3124 "1512 " 283.2 " 60.02 " 49.42 " 14
15 7.676" 4.757" 7.744" 12.11 " 18.56 " 49.00 " 335.1 "2199 "3203 " 265.8 " 70.68 " 51.57 " 15
16 8.218" 4.116" 9.330" 12.18 " 18.64 " 61.20 " 417.7 "1736 "5674 & 259.7 " 99.51 " 47.29 " 16
17 8.432" 3.599" 6.585" 10.53 " 17.56 " 84.71 "1170 "1383 "3619 " 240.6 " 128.8 " 42.05 " 17
18 6.928" 3.876" 8.013" 10.41 " 16.44 " 210.9 "2828 "1125 "5208 & 222.6 " 116.6 " 33.42 " 18
19 6.060" 3.105" 8.903" 10.88 " 15.96 " 296.6 "2836 " 958.1 "4202 & 207.2 " 101.2 " 23.75 " 19
20 5.809" 3.465" 8.276" 13.47 " 15.58 " 391.8 "1722 " 979.5 "2393 " 190.0 " 84.84 " 22.14 " 20
21 6.504" 2.999" 7.092" 13.79 " 16.19 " 660.5 "1477 "1289 "1803 " 198.7 " 74.16 " 22.07 " 21
22 6.073" 4.893" 8.634" 11.93 " 16.12 " 751.1 "2298 "1137 "2371 " 276.7 " 63.77 " 23.21 " 22
23 5.477" 4.497" 9.634" 12.16 " 15.78 " 512.7 "2968 " 954.0 "2681 " 366.2 " 58.92 " 21.86 " 23
24 5.017" 5.292" 8.132" 13.68 " 16.28 " 401.6 "2844 "1006 "1850 " 435.8 " 55.01 " 18.84 " 24
25 6.782" 2.979" 7.466" 13.49 " 16.70 " 324.3 "2735 "1045 "1410 " 380.5 " 50.50 " 17.86 " 25
26 4.759" 3.614" 14.16 " 13.85 " 16.15 " 268.2 "1893 " 901.5 "1192 " 303.4 " 47.59 " 17.93 " 26
27 4.262" 3.321" 9.539" 13.10 " 15.83 " 242.0 "2158 " 857.4 "1688 " 254.1 " 44.59 " 18.18 " 27
28 4.544" 3.464" 9.175" 12.50 " 15.24 " 342.8 "5171 " 923.1 "1721 " 220.2 " 43.65 " 17.24 " 28
29 6.600" 2.774" 15.80 " 10.94 " 14.78 " 441.7 "3515 " 902.7 "1354 " 192.4 " 38.95 " 13.53 " 29
30 7.957" 13.60 " 11.73 " 15.19 " 582.1 "3739 " 768.7 "1135 " 173.7 " 43.99 " 10.32 " 30
31 6.546" 8.248" 43.89 " 5645 & 730.2 " 155.2 " 10.75 " 31
Mean 9.585" 4.288" 7.090" 10.87 " 17.48 " 209.5 "1781 &1812 &1921 & 370.9 " 81.71 " 32.58 "
Median 7.676" 3.938" 7.466" 11.25 " 16.19 " 80.27 "1370 &1301 &1591 & 306.0 " 80.21 " 34.14 "
Maximum 28.45 " 7.226" 15.80 " 13.85 " 43.89 " 751.1 "5645 &6425 &5674 & 980.7 " 139.3 " 51.57 "
Minimum 4.262" 2.774" 2.903" 6.181" 10.80 " 28.61 " 335.1 & 730.2 & 563.8 & 155.2 " 38.95 " 10.32 "
Total 297.1 " 124.3 " 219.8 " 326.2 " 542.0 " 6286 "55217 &56202 &57651 &11500 " 2451 " 1010 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 524.1 & " ... Relative Uncertainty +/-10%
Ann. Median 43.94 & & ... Relative Uncertainty +/-30%
Annual Total 191829 &
Maximum Minimum
Daily 6425 & 2.774&
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1997
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 10.44 " 3.678" 21.92 " 11.20 " 23.31 " 122.4 " 235.7 " 323.5 " 476.2 " 184.4 " 57.66 " 32.35 " 1
2 11.63 " 2.742" 17.19 " 11.65 " 25.20 " 196.9 " 215.3 " 298.6 " 548.2 " 177.7 " 54.07 " 27.83 " 2
3 10.04 " 1.842" 17.71 " 11.58 " 24.40 " 251.3 " 215.0 " 282.5 " 546.7 " 166.5 " 51.62 " 26.76 " 3
4 9.474" 1.283" 17.03 " 11.18 " 22.69 " 319.5 " 248.3 " 472.8 " 487.0 " 156.1 " 49.20 " 26.26 " 4
5 8.725" 1.582" 13.08 " 10.90 " 21.85 " 433.0 " 279.7 " 864.2 " 462.0 " 144.5 " 46.95 " 25.29 " 5
6 7.438" 2.375" 12.12 " 9.052" 21.78 " 425.4 " 385.7 " 842.9 " 736.7 " 134.3 " 45.28 " 22.76 " 6
7 7.920" 1.559" 9.026" 9.541" 21.50 " 344.7 " 671.7 " 672.7 " 838.4 " 126.3 " 38.78 " 20.89 " 7
8 7.132" 1.813" 8.123" 15.12 " 21.50 " 308.1 " 670.6 " 581.0 " 794.8 " 121.6 " 33.96 " 21.78 " 8
9 4.196" 1.792" 7.363" 14.66 " 21.10 " 425.1 " 577.5 " 930.5 " 852.7 " 129.6 " 33.42 " 18.65 " 9
10 3.584" 1.493" 7.246" 12.94 " 19.63 " 487.0 " 505.7 "1536 " 842.8 " 233.6 " 34.14 " 19.71 " 10
11 3.600" 1.342" 8.458" 13.52 " 20.43 " 440.4 " 429.4 "1220 " 735.7 " 373.1 " 33.57 " 18.63 " 11
12 3.210" 1.748" 8.041" 12.23 " 22.16 " 405.3 " 379.4 " 868.1 " 629.2 " 301.6 " 31.97 " 15.83 " 12
13 2.623" 2.024" 7.772" 11.15 " 22.33 " 344.5 "1442 " 703.9 " 548.9 " 241.6 " 30.90 " 14.65 " 13
14 2.233" 1.798" 9.197" 11.51 " 21.90 " 289.2 "3819 " 716.2 " 491.0 " 203.2 " 29.59 " 12.56 " 14
15 3.684" 1.426" 10.95 " 10.68 " 21.77 " 252.3 "2136 "1842 " 441.2 " 177.7 " 27.22 " 11.63 " 15
16 3.412" 2.164" 12.85 " 8.858" 20.77 " 221.0 "1276 "2487 " 392.2 " 156.9 " 23.66 " 13.88 " 16
17 2.774" 1.833" 14.94 " 8.891" 22.84 " 197.2 " 921.0 "1798 " 347.0 " 139.7 " 23.59 " 11.56 " 17
18 3.413" 1.582" 16.26 " 9.934" 25.05 " 183.2 " 712.4 "1210 " 324.3 " 125.7 " 22.69 " 9.606" 18
19 3.294" 2.071" 14.73 " 9.116" 27.36 " 760.0 " 579.0 " 916.7 " 329.6 " 114.9 " 23.32 " 8.467" 19
20 2.790" 2.059" 13.50 " 9.592" 28.51 "1356 " 498.8 " 744.9 " 356.7 " 104.9 " 22.81 " 8.231" 20
21 2.997" 4.829" 12.15 " 13.11 " 28.51 "1222 " 426.0 " 631.2 " 334.7 " 95.36 " 31.91 " 7.647" 21
22 2.592" 6.696" 10.99 " 13.37 " 30.59 " 844.0 " 377.8 " 553.0 " 296.5 " 88.06 " 44.29 " 5.911" 22
23 1.880" 8.826" 11.87 " 13.22 " 36.07 " 751.0 " 348.8 " 487.1 " 273.4 " 82.20 " 46.69 " 6.583" 23
24 2.929" 8.630" 12.19 " 14.68 " 42.39 " 617.9 " 340.6 " 433.7 " 263.4 " 78.80 " 48.62 " 5.799" 24
25 2.548" 19.52 " 11.92 " 16.19 " 62.57 " 502.6 " 378.7 " 394.4 " 272.6 " 79.21 " 46.91 " 5.224" 25
26 3.500" 26.58 " 10.77 " 18.00 " 115.2 " 429.8 " 382.6 " 367.3 " 254.9 " 77.90 " 44.36 " 5.913" 26
27 3.659" 28.69 " 10.80 " 20.78 " 119.7 " 369.4 " 413.4 " 376.8 " 239.9 " 80.11 " 41.88 " 5.946" 27
28 3.655" 27.79 " 11.50 " 20.10 " 90.03 " 313.9 " 440.4 " 619.1 " 225.1 " 75.81 " 40.07 " 7.226" 28
29 2.848" 11.54 " 20.58 " 68.74 " 282.1 " 403.4 " 871.8 " 210.0 " 69.57 " 37.35 " 5.531" 29
30 2.692" 9.202" 22.80 " 61.35 " 257.0 " 383.8 " 683.8 " 195.8 " 63.83 " 34.17 " 5.353" 30
31 2.398" 12.37 " 72.88 " 353.5 " 532.1 " 60.93 " 8.056" 31
Mean 4.624" 6.064" 12.03 " 13.20 " 38.20 " 445.1 " 659.6 " 815.0 " 458.3 " 140.8 " 37.69 " 14.08 "
Median 3.413" 2.042" 11.87 " 11.94 " 24.40 " 357.1 " 413.4 " 683.8 " 416.7 " 126.3 " 35.76 " 11.63 "
Maximum 11.63 " 28.69 " 21.92 " 22.80 " 119.7 "1356 "3819 "2487 " 852.7 " 373.1 " 57.66 " 32.35 "
Minimum 1.880" 1.283" 7.246" 8.858" 19.63 " 122.4 " 215.0 " 282.5 " 195.8 " 60.93 " 22.69 " 5.224"
Total 143.3 " 169.7 " 372.9 " 396.2 " 1184 "13354 "20450 "25266 "13749 " 4366 " 1130 " 436.5 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 221.9 " " ... Relative Uncertainty +/-10%
Ann. Median 32.35 "
Annual Total 81020 "
Maximum Minimum
Daily 3819 " 1.283"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1998
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 4.981" 3.833" 3.986" 13.50 " 15.14 " 44.00 " 137.0 " 463.3 "1521 " 777.6 " 87.58 " 20.54 " 1
2 5.112" 3.528" 4.367" 10.02 " 13.70 " 40.25 " 124.0 " 716.4 "2363 " 764.8 " 82.56 " 20.80 " 2
3 9.177" 3.573" 5.471" 8.597" 13.50 " 37.72 " 118.1 " 568.8 "2767 " 667.3 " 76.99 " 19.87 " 3
4 6.014" 4.865" 5.475" 9.870" 14.00 " 37.07 " 135.4 " 472.1 "1824 " 550.3 " 71.92 " 17.87 " 4
5 4.418" 4.895" 4.746" 8.628" 17.54 " 43.37 " 252.5 " 411.2 "1250 " 477.1 " 68.28 " 14.57 " 5
6 5.069" 3.990" 3.970" 10.93 " 17.12 " 52.98 " 360.6 " 591.3 " 951.8 " 421.8 " 62.70 " 11.93 " 6
7 4.254" 4.416" 3.462" 11.10 " 16.28 " 74.71 " 539.9 " 611.7 " 737.0 " 380.1 " 60.30 " 12.19 " 7
8 5.494" 3.556" 5.304" 10.69 " 16.58 " 96.35 " 471.1 " 543.7 " 601.0 " 332.9 " 55.95 " 13.31 " 8
9 4.867" 3.442" 7.516" 10.18 " 19.22 " 125.0 " 351.2 " 486.5 " 512.8 " 294.0 " 51.17 " 20.39 " 9
10 5.375" 3.935" 17.06 " 9.674" 21.67 " 201.6 " 285.3 " 444.9 " 448.3 " 273.8 " 43.85 " 24.17 " 10
11 4.243" 4.887" 21.78 " 9.036" 23.31 " 373.1 " 245.8 " 662.5 " 406.7 " 258.7 " 40.40 " 27.47 " 11
12 4.643" 3.719" 23.41 " 8.773" 23.21 " 369.5 " 219.1 " 685.3 " 371.8 " 245.7 " 37.80 " 19.19 " 12
13 5.124" 3.840" 33.93 " 11.23 " 34.23 " 259.9 " 195.5 " 530.2 " 364.2 " 243.9 " 38.17 " 7.638" 13
14 6.324" 3.366" 28.48 " 11.40 " 30.09 " 224.5 " 174.8 " 431.0 " 351.3 " 247.3 " 37.70 " 7.292" 14
15 5.382" 3.719" 23.60 " 11.59 " 27.90 " 195.3 " 157.7 " 369.4 " 316.0 " 236.5 " 34.83 " 10.63 " 15
16 5.613" 3.450" 18.78 " 14.14 " 25.92 " 165.4 " 146.6 " 333.5 " 291.3 " 222.0 " 32.95 " 8.793" 16
17 5.666" 3.305" 15.40 " 15.65 " 23.16 " 156.3 " 137.9 " 307.7 " 285.0 " 249.7 " 34.12 " 7.030" 17
18 5.695" 4.005" 14.50 " 15.76 " 24.78 " 199.0 " 140.1 " 371.7 " 292.4 " 284.8 " 33.84 " 7.480" 18
19 6.191" 4.586" 13.35 " 16.60 " 24.40 " 267.4 " 162.4 " 635.1 " 270.0 " 278.4 " 31.08 " 7.685" 19
20 7.922" 4.012" 15.28 " 17.51 " 23.93 " 234.4 " 173.1 " 593.4 " 250.9 " 241.0 " 28.92 " 6.546" 20
21 5.988" 3.743" 17.61 " 16.38 " 24.74 " 188.7 " 159.2 " 480.6 " 332.7 " 208.3 " 27.54 " 5.620" 21
22 5.619" 3.196" 20.06 " 17.27 " 30.73 " 158.8 " 204.0 " 405.7 " 669.3 " 190.0 " 26.81 " 6.486" 22
23 6.749" 3.853" 19.23 " 17.99 " 28.21 " 138.6 " 288.5 " 355.2 " 622.0 " 172.3 " 26.81 " 6.217" 23
24 5.310" 3.835" 17.22 " 18.74 " 28.55 " 123.3 " 251.0 " 546.8 " 504.8 " 155.5 " 29.76 " 5.806" 24
25 4.325" 4.238" 18.98 " 17.33 " 33.08 " 114.7 " 222.0 " 613.4 " 560.7 " 140.8 " 28.15 " 6.449" 25
26 3.935" 3.805" 17.90 " 17.59 " 33.35 " 111.9 " 269.9 " 478.9 " 601.8 " 129.5 " 25.22 " 7.008" 26
27 3.756" 3.988" 18.32 " 17.78 " 35.68 " 126.0 " 314.1 " 537.7 " 927.7 " 120.9 " 24.03 " 6.208" 27
28 3.367" 4.076" 16.57 " 17.05 " 35.26 " 154.6 " 268.0 " 890.4 "1070 " 112.8 " 22.32 " 6.394" 28
29 4.810" 16.49 " 17.22 " 40.70 " 171.3 " 230.7 " 918.2 " 912.6 " 103.6 " 21.70 " 5.696" 29
30 3.749" 13.85 " 15.35 " 48.44 " 157.4 " 206.8 "1883 " 752.3 " 97.87 " 21.13 " 6.633" 30
31 4.254" 16.45 " 45.44 " 203.1 "2005 " 91.56 " 7.901" 31
Mean 5.272" 3.916" 14.92 " 13.58 " 26.12 " 154.8 " 230.5 " 624.1 " 771.1 " 289.4 " 42.15 " 11.48 "
Median 5.124" 3.838" 16.49 " 13.82 " 24.74 " 155.4 " 206.8 " 537.7 " 580.9 " 245.7 " 34.47 " 7.685"
Maximum 9.177" 4.895" 33.93 " 18.74 " 48.44 " 373.1 " 539.9 "2005 "2767 " 777.6 " 87.58 " 27.47 "
Minimum 3.367" 3.196" 3.462" 8.597" 13.50 " 37.07 " 118.1 " 307.7 " 250.9 " 91.56 " 21.13 " 5.620"
Total 163.4 " 109.6 " 462.6 " 407.6 " 809.9 " 4644 " 7147 "19347 "23133 " 8972 " 1264 " 355.8 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 183.0 " " ... Relative Uncertainty +/-10%
Ann. Median 30.09 "
Annual Total 66819 "
Maximum Minimum
Daily 2767 " 3.196"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 1999
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 6.497" 4.748" 12.61 " 7.631" 11.10 " 171.2 " 613.2 " 562.4 "1054 " 525.5 " 198.1 " 27.69 " 1
2 6.006" 7.684" 12.91 " 6.785" 11.67 " 184.9 " 509.2 " 492.8 " 966.0 " 505.5 " 182.0 " 29.11 " 2
3 7.659" 6.354" 15.79 " 6.026" 12.85 " 206.3 " 475.1 " 439.4 "1530 " 440.8 " 168.6 " 25.21 " 3
4 6.909" 8.639" 12.41 " 5.575" 13.12 " 227.9 "2498 " 395.7 "1958 " 384.3 " 160.4 " 24.57 " 4
5 7.834" 11.36 " 9.325" 6.365" 15.15 " 196.3 "5075 & 361.2 "1609 " 340.9 " 146.3 " 23.14 " 5
6 8.091" 8.509" 7.124" 6.823" 26.97 " 159.1 "2964 " 407.9 "1204 " 322.4 " 130.0 " 24.94 " 6
7 8.634" 5.018" 5.926" 7.016" 30.75 " 140.9 "1884 " 525.0 " 991.2 " 378.5 " 119.9 " 22.16 " 7
8 5.557" 4.719" 12.50 " 7.139" 27.87 " 179.9 "1318 " 478.5 " 874.4 "1058 " 111.6 " 19.74 " 8
9 6.734" 7.825" 14.30 " 7.516" 22.74 " 237.6 " 978.4 " 428.0 " 752.7 "1633 " 103.8 " 17.41 " 9
10 5.436" 10.50 " 11.89 " 9.201" 23.68 " 227.4 " 791.1 " 934.5 " 657.2 "1362 " 96.72 " 16.69 " 10
11 5.429" 8.390" 7.845" 9.079" 22.11 " 436.1 " 663.9 "1848 "1035 " 960.9 " 90.34 " 16.49 " 11
12 5.792" 7.670" 8.543" 8.394" 23.25 " 771.1 " 561.7 "1772 "1058 " 738.1 " 84.66 " 15.19 " 12
13 5.244" 9.090" 6.203" 9.753" 22.84 " 597.3 " 608.2 "1218 " 962.1 " 705.3 " 78.55 " 18.87 " 13
14 4.343" 8.629" 6.315" 9.028" 20.69 " 553.5 " 863.7 " 909.5 "1472 "2411 " 74.31 " 17.17 " 14
15 4.525" 7.239" 7.204" 9.837" 21.74 " 497.1 " 918.0 " 784.5 "1928 "2547 " 70.13 " 15.84 " 15
16 4.313" 8.401" 8.637" 7.792" 21.85 " 459.1 "1140 " 854.4 "1593 "2031 " 66.19 " 13.90 " 16
17 4.032" 6.637" 8.233" 7.796" 20.62 " 448.5 "1484 "1054 "1173 "1683 " 63.61 " 12.78 " 17
18 3.838" 5.532" 7.496" 8.918" 20.39 "1310 "1205 "1616 " 927.7 "1207 " 61.45 " 12.92 " 18
19 7.360" 4.551" 10.97 " 10.14 " 23.54 "1563 " 976.6 "1744 " 778.9 " 909.5 " 59.71 " 16.46 " 19
20 6.737" 10.18 " 13.40 " 11.22 " 29.96 "1060 " 828.4 "1390 " 685.9 " 737.5 " 57.07 " 21.26 " 20
21 5.769" 12.13 " 14.73 " 9.940" 28.66 " 731.3 " 697.1 "1032 " 654.3 " 616.4 " 57.13 " 19.78 " 21
22 4.459" 12.19 " 16.30 " 10.12 " 26.57 " 579.6 " 585.0 " 835.1 " 599.9 " 500.8 " 52.92 " 18.65 " 22
23 5.649" 12.73 " 14.16 " 8.811" 23.78 "1166 " 510.5 " 686.3 " 535.2 " 436.0 " 49.08 " 19.28 " 23
24 4.140" 13.38 " 14.99 " 9.016" 22.87 "1115 " 463.9 " 889.1 " 477.4 " 396.3 " 45.26 " 16.81 " 24
25 4.693" 13.62 " 13.16 " 8.161" 24.91 " 841.7 " 434.9 "1690 " 431.4 " 364.2 " 43.24 " 13.19 " 25
26 6.543" 15.62 " 12.02 " 7.283" 29.15 "1565 " 579.0 "1883 " 402.8 " 329.1 " 41.42 " 13.20 " 26
27 4.512" 15.28 " 11.24 " 8.071" 67.41 "1360 " 633.5 "1489 " 433.8 " 305.3 " 37.80 " 14.14 " 27
28 4.860" 14.28 " 9.179" 9.213" 368.1 "1063 " 765.2 "1498 " 557.1 " 282.4 " 34.59 " 12.60 " 28
29 4.658" 8.984" 7.883" 351.0 "1033 "1004 "2102 " 550.1 " 262.6 " 32.14 " 12.16 " 29
30 3.900" 10.45 " 9.514" 234.4 " 804.3 " 847.2 "1963 " 514.5 " 242.9 " 28.46 " 12.05 " 30
31 3.925" 8.795" 183.9 " 672.2 "1396 " 218.4 " 11.32 " 31
Mean 5.615" 9.319" 10.76 " 8.335" 57.54 " 663.0 "1082 &1086 " 945.7 " 801.3 " 84.87 " 17.89 "
Median 5.436" 8.569" 10.97 " 8.278" 23.54 " 566.5 " 791.1 & 934.5 " 901.0 " 505.5 " 68.16 " 16.81 "
Maximum 8.634" 15.62 " 16.30 " 11.22 " 368.1 "1565 "5075 &2102 "1958 "2547 " 198.1 " 29.11 "
Minimum 3.838" 4.551" 5.926" 5.575" 11.10 " 140.9 " 434.9 & 361.2 " 402.8 " 218.4 " 28.46 " 11.32 "
Total 174.0 " 260.9 " 333.7 " 250.0 " 1783 "19890 "33554 &33686 "28372 "24841 " 2546 " 554.8 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 400.6 & " ... Relative Uncertainty +/-10%
Ann. Median 43.24 & & ... Relative Uncertainty +/-30%
Annual Total 146249 &
Maximum Minimum
Daily 5075 & 3.838&
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2000
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 8.953" 11.34 " 8.054" 15.63 " 31.84 " 30.27 " 237.1 " 574.4 "2006 " 210.8 " 49.96 " 21.48 " 1
2 10.55 " 9.764" 6.790" 15.37 " 41.68 " 30.19 "1081 " 948.0 "1664 " 194.5 " 48.84 " 19.59 " 2
3 9.086" 8.482" 8.054" 14.15 " 33.77 " 29.33 "1015 "1635 "1397 " 180.6 " 46.58 " 20.22 " 3
4 7.697" 9.522" 8.798" 12.80 " 30.48 " 28.16 "2084 "1164 "1106 " 165.4 " 42.64 " 19.40 " 4
5 7.599" 9.876" 8.129" 13.20 " 28.22 " 26.76 "3005 "1178 " 938.9 " 157.1 " 41.40 " 19.54 " 5
6 5.840" 7.407" 8.716" 11.61 " 26.45 " 26.27 "1675 "3191 "1982 " 153.3 " 40.84 " 18.10 " 6
7 6.517" 7.408" 9.096" 11.83 " 26.03 " 26.41 "1234 "3024 "2281 # 149.4 " 41.63 " 17.25 " 7
8 6.675" 10.74 " 7.384" 10.63 " 25.16 " 26.14 "1120 "2358 "1709 " 145.0 " 40.94 " 14.75 " 8
9 10.82 " 9.384" 8.000" 10.15 " 24.12 " 25.72 " 821.5 "1609 "1237 " 140.2 " 40.87 " 13.69 " 9
10 9.697" 6.126" 27.41 " 10.14 " 24.86 " 26.55 " 959.1 "1130 " 973.6 " 136.2 " 43.12 " 13.93 " 10
11 8.384" 5.609" 49.00 " 11.43 " 26.33 " 26.36 "2349 " 892.3 " 810.1 " 130.0 " 45.82 " 12.76 " 11
12 8.175" 7.762" 37.71 " 10.13 " 27.24 " 26.51 "1917 " 752.9 " 702.2 " 121.5 " 45.45 " 13.16 " 12
13 8.621" 6.161" 34.09 " 10.55 " 27.10 " 32.89 "1490 " 669.5 " 692.0 " 113.4 " 40.75 " 9.347" 13
14 10.54 " 6.864" 25.16 " 13.11 " 26.59 " 66.93 "1645 " 595.8 " 704.3 " 108.2 " 36.74 " 8.021" 14
15 16.84 " 8.024" 20.36 " 14.43 " 28.40 " 76.24 "1735 " 560.2 " 667.6 " 102.9 " 32.91 " 9.434" 15
16 20.44 " 7.712" 19.12 " 15.23 " 30.89 " 75.59 "1627 " 852.1 " 687.3 " 96.00 " 30.36 " 9.315" 16
17 25.10 " 7.061" 17.77 " 15.37 " 30.64 " 66.73 "2066 "1113 " 595.4 " 89.46 " 33.24 " 12.13 " 17
18 29.05 " 5.796" 15.82 " 15.53 " 29.85 " 57.98 "3064 " 978.2 " 514.1 " 83.11 " 33.92 " 11.52 " 18
19 27.40 " 4.930" 14.40 " 14.18 " 28.85 " 59.59 "2676 " 774.6 " 454.3 " 76.72 " 31.83 " 10.29 " 19
20 23.75 " 5.195" 16.34 " 14.26 " 29.01 " 69.98 "1841 " 661.5 " 412.3 " 73.78 " 29.73 " 11.08 " 20
21 18.07 " 7.177" 15.43 " 14.35 " 29.54 " 104.1 "1518 " 589.5 " 377.0 " 70.70 " 25.74 " 12.04 " 21
22 18.30 " 5.678" 16.07 " 14.22 " 29.68 " 111.8 "1440 " 516.8 " 343.8 " 70.41 " 24.66 " 14.90 " 22
23 20.31 " 6.423" 19.04 " 13.61 " 28.40 " 96.46 "1312 " 462.5 " 315.1 " 72.87 " 23.24 " 12.33 " 23
24 18.91 " 5.910" 19.51 " 12.30 " 26.64 " 90.66 "1064 " 543.9 " 291.0 " 75.69 " 23.62 " 13.14 " 24
25 16.99 " 6.216" 18.23 " 14.84 " 26.19 " 104.6 " 846.0 " 600.8 " 269.3 " 69.65 " 23.48 " 12.76 " 25
26 17.15 " 6.743" 18.45 " 16.55 " 24.90 " 132.6 " 692.2 " 738.2 " 253.4 " 60.85 " 24.17 " 15.58 " 26
27 16.36 " 5.366" 18.58 " 25.57 " 24.59 " 140.1 " 584.1 " 889.8 " 243.6 " 56.85 " 25.06 " 12.84 " 27
28 13.57 " 6.979" 16.70 " 35.55 " 24.88 " 121.7 " 549.2 " 816.4 " 243.8 " 54.90 " 25.11 " 10.83 " 28
29 12.74 " 8.203" 15.03 " 33.66 " 26.79 " 103.8 " 644.2 "1013 " 238.5 " 52.81 " 24.86 " 10.03 " 29
30 9.466" 15.40 " 31.77 " 26.77 " 92.03 " 600.2 "1298 " 224.1 " 52.65 " 23.37 " 10.29 " 30
31 10.11 " 16.55 " 29.49 " 529.6 "1734 " 51.14 " 10.44 " 31
Mean 13.99 " 7.375" 17.39 " 15.74 " 28.24 " 64.43 "1401 "1092 " 811.2 # 106.9 " 34.70 " 13.55 "
Median 10.82 " 7.061" 16.34 " 14.20 " 27.24 " 63.16 "1312 " 889.8 " 677.5 # 96.00 " 33.58 " 12.76 "
Maximum 29.05 " 11.34 " 49.00 " 35.55 " 41.68 " 140.1 "3064 "3191 "2281 # 210.8 " 49.96 " 21.48 "
Minimum 5.840" 4.930" 6.790" 10.13 " 24.12 " 25.72 " 237.1 " 462.5 " 224.1 # 51.14 " 23.24 " 8.021"
Total 433.7 " 213.8 " 539.2 " 472.2 " 875.5 " 1932 "43434 "33872 "24338 # 3316 " 1041 " 420.3 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 302.9 # " ... Relative Uncertainty +/-10%
Ann. Median 28.63 # # ... Relative Uncertainty +/-15%
Annual Total 110891 #
Maximum Minimum
Daily 3191 # 4.930#
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2001
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 9.592" 5.426" 7.238" 8.315" 12.46 " 35.20 " 28.16 " 37.38 " 98.47 " 211.9 " 29.05 " 18.04 " 1
2 10.71 " 6.990" 8.280" 7.952" 12.58 " 34.57 " 28.53 " 37.84 " 89.33 " 189.1 " 27.73 " 27.35 " 2
3 12.75 " 6.983" 9.419" 8.439" 12.84 " 36.06 " 29.99 " 42.69 " 85.27 " 158.0 " 28.01 " 40.42 " 3
4 10.75 " 6.454" 11.05 " 7.467" 10.92 " 34.15 " 32.39 " 50.27 " 80.99 " 133.1 " 26.78 " 115.7 " 4
5 9.913" 8.048" 11.02 " 8.411" 11.99 " 31.74 " 31.89 " 48.30 " 79.95 " 115.1 " 24.68 " 111.7 " 5
6 7.995" 9.608" 9.193" 8.382" 20.75 " 30.55 " 33.56 " 51.77 " 85.78 " 99.45 " 22.95 " 78.95 " 6
7 7.925" 7.286" 6.824" 9.205" 34.11 " 30.21 " 34.21 " 56.14 " 99.31 " 87.02 " 22.33 " 62.16 " 7
8 12.03 " 6.975" 7.450" 10.01 " 36.77 " 30.79 " 35.86 " 65.34 " 106.2 " 78.30 " 20.55 " 51.31 " 8
9 11.23 " 6.326" 7.393" 8.560" 35.88 " 32.32 " 38.39 " 185.4 " 111.8 " 71.28 " 21.74 " 44.37 " 9
10 8.080" 5.619" 7.229" 11.16 " 32.41 " 32.03 " 39.23 " 265.5 " 142.7 " 66.02 " 20.74 " 38.71 " 10
11 7.161" 6.466" 6.104" 11.56 " 29.01 " 33.72 " 45.85 " 231.5 " 152.5 " 66.99 " 18.51 " 33.83 " 11
12 7.780" 6.542" 6.631" 9.317" 29.45 " 32.71 " 49.03 " 194.2 " 135.1 " 65.26 " 15.05 " 28.61 " 12
13 8.390" 6.561" 6.756" 7.480" 29.58 " 31.61 " 46.13 " 168.2 " 124.0 " 64.02 " 11.99 " 25.53 " 13
14 7.445" 6.645" 6.141" 8.264" 27.64 " 30.96 " 41.57 " 157.7 " 112.7 " 60.88 " 12.94 " 21.99 " 14
15 8.195" 5.387" 8.363" 11.65 " 26.90 " 29.80 " 39.95 " 168.7 " 103.9 " 57.30 " 12.38 " 20.24 " 15
16 8.578" 6.183" 9.621" 13.82 " 26.06 " 29.62 " 38.44 " 185.6 " 95.82 " 53.95 " 13.54 " 17.81 " 16
17 7.504" 6.904" 8.180" 13.75 " 25.10 " 30.04 " 36.74 " 176.7 " 89.98 " 51.75 " 12.99 " 17.37 " 17
18 6.425" 6.364" 11.70 " 10.94 " 24.00 " 29.81 " 35.13 " 152.1 " 85.77 " 48.97 " 12.21 " 16.27 " 18
19 7.250" 6.931" 14.88 " 11.41 " 22.98 " 29.40 " 33.61 " 134.3 " 77.96 " 46.57 " 14.18 " 15.55 " 19
20 8.418" 6.905" 13.06 " 13.14 " 24.63 " 28.83 " 33.62 " 120.4 " 72.31 " 45.41 " 12.89 " 15.54 " 20
21 7.796" 5.937" 10.45 " 12.31 " 27.42 " 28.33 " 36.83 " 107.2 " 68.66 " 44.66 " 13.11 " 15.32 " 21
22 6.500" 5.863" 11.62 " 14.10 " 26.91 " 28.20 " 35.49 " 96.64 " 87.66 " 43.45 " 12.34 " 13.44 " 22
23 6.815" 6.114" 12.42 " 15.92 " 24.35 " 28.36 " 33.28 " 89.80 " 132.3 " 42.29 " 12.00 " 9.765" 23
24 6.925" 5.989" 11.18 " 13.85 " 24.12 " 28.58 " 32.67 " 97.37 " 151.1 " 41.60 " 15.49 " 8.261" 24
25 7.029" 5.651" 12.06 " 12.12 " 25.95 " 28.26 " 32.10 " 118.4 " 126.8 " 38.48 " 17.44 " 10.37 " 25
26 8.669" 5.599" 12.72 " 12.85 " 25.12 " 27.83 " 31.68 " 117.3 " 107.0 " 38.84 " 16.38 " 10.28 " 26
27 7.632" 6.824" 11.99 " 12.76 " 24.85 " 27.70 " 31.33 " 101.8 " 92.01 " 36.24 " 15.10 " 10.22 " 27
28 6.777" 6.851" 10.56 " 13.08 " 24.64 " 27.41 " 31.79 " 90.16 " 86.23 " 34.48 " 12.34 " 8.357" 28
29 6.230" 7.374" 11.74 " 29.75 " 27.71 " 33.47 " 85.64 " 102.0 " 33.04 " 11.60 " 9.025" 29
30 5.593" 8.443" 11.65 " 41.30 " 27.84 " 34.76 " 89.48 " 164.1 " 30.95 " 14.10 " 7.490" 30
31 5.891" 8.415" 36.87 " 36.10 " 103.5 " 29.94 " 6.959" 31
Mean 8.194" 6.551" 9.478" 10.98 " 25.72 " 30.48 " 35.54 " 117.0 " 104.9 " 70.47 " 17.37 " 29.39 "
Median 7.796" 6.504" 9.193" 11.48 " 25.95 " 29.92 " 34.21 " 103.5 " 98.89 " 53.95 " 15.07 " 17.81 "
Maximum 12.75 " 9.608" 14.88 " 15.92 " 41.30 " 36.06 " 49.03 " 265.5 " 164.1 " 211.9 " 29.05 " 115.7 "
Minimum 5.593" 5.387" 6.104" 7.467" 10.92 " 27.41 " 28.16 " 37.38 " 68.66 " 29.94 " 11.60 " 6.959"
Total 254.0 " 183.4 " 293.8 " 329.6 " 797.4 " 914.4 "1101 "3628 "3148 "2184 " 521.2 " 911.1 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 39.09 " " ... Relative Uncertainty +/-10%
Ann. Median 26.06 "
Annual Total 14268 "
Maximum Minimum
Daily 265.5 " 5.387"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2002
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 7.159" 3.399" 3.736" 9.732" 13.76 " 23.89 " 309.2 " 351.0 " 836.3 " 179.9 " 99.39 " 17.60 " 1
2 6.617" 4.210" 3.916" 9.270" 14.66 " 27.09 " 523.8 " 365.1 "1038 " 161.9 " 108.0 " 18.06 " 2
3 7.236" 3.030" 3.853" 7.181" 17.34 " 30.46 " 426.3 " 345.0 "1051 " 148.3 " 124.5 " 15.71 " 3
4 6.103" 2.831" 4.157" 7.660" 50.10 " 45.11 " 352.1 " 508.7 " 894.2 " 137.8 " 112.0 " 16.45 " 4
5 7.072" 2.621" 4.276" 7.662" 34.64 " 126.1 " 387.9 "1183 " 723.8 " 141.8 " 98.75 " 18.46 " 5
6 5.810" 3.180" 7.211" 6.853" 29.97 " 162.9 " 375.5 "1256 " 594.6 " 196.9 " 87.03 " 17.27 " 6
7 6.545" 2.687" 5.410" 8.456" 33.31 " 145.7 " 386.9 " 924.2 " 489.9 " 268.8 " 76.65 " 13.43 " 7
8 7.987" 2.919" 4.572" 12.85 " 31.83 " 118.4 " 618.4 " 704.4 " 432.8 " 242.8 " 68.23 " 13.18 " 8
9 7.698" 3.447" 4.369" 12.34 " 46.00 " 96.37 " 662.0 " 887.0 " 387.1 " 201.1 " 60.78 " 13.71 " 9
10 7.878" 3.292" 3.940" 11.39 " 48.55 " 83.02 " 664.9 "1261 " 355.6 " 170.3 " 56.86 " 12.34 " 10
11 6.504" 3.396" 4.665" 11.34 " 52.81 " 73.37 "1255 "1226 " 327.2 " 152.4 " 53.65 " 11.28 " 11
12 6.997" 3.473" 4.039" 10.77 " 51.90 " 67.95 "1616 " 907.5 " 293.4 " 142.4 " 48.88 " 8.844" 12
13 6.647" 3.015" 5.382" 11.73 " 45.93 " 75.75 "1612 " 709.2 " 272.4 " 130.5 " 45.49 " 7.898" 13
14 6.504" 3.957" 5.411" 10.03 " 50.76 " 144.1 "1244 " 578.0 " 266.4 " 121.5 " 42.93 " 6.689" 14
15 6.832" 3.037" 4.480" 10.41 " 48.83 " 275.0 "1116 " 726.3 " 545.2 " 114.2 " 40.99 " 6.860" 15
16 5.946" 3.667" 6.271" 11.19 " 46.87 " 237.2 " 892.1 " 893.8 " 780.4 " 108.9 " 37.62 " 7.261" 16
17 7.060" 3.810" 6.954" 12.06 " 50.13 " 182.3 " 674.3 " 718.1 " 626.2 " 112.6 " 34.48 " 6.551" 17
18 5.094" 4.169" 6.960" 13.09 " 42.47 " 170.3 " 723.4 " 581.5 " 488.9 " 182.7 " 33.25 " 6.611" 18
19 6.561" 4.789" 7.165" 14.02 " 38.51 " 270.3 "1418 " 491.4 " 418.7 " 260.6 " 30.53 " 6.244" 19
20 5.978" 6.163" 8.345" 13.26 " 35.87 " 275.4 "1152 " 427.0 " 370.2 " 242.0 " 28.61 " 5.529" 20
21 6.667" 5.687" 6.626" 15.37 " 32.79 " 211.7 " 811.1 " 382.2 " 337.8 " 196.9 " 28.14 " 6.545" 21
22 4.600" 4.939" 9.449" 17.13 " 31.33 " 175.1 " 654.6 " 339.4 " 307.3 " 163.0 " 26.80 " 5.325" 22
23 4.677" 5.437" 9.663" 16.43 " 29.78 " 153.8 " 546.1 " 313.1 " 301.7 " 141.6 " 26.12 " 5.978" 23
24 4.680" 7.457" 8.981" 15.71 " 28.86 " 139.3 " 474.6 " 286.5 " 298.1 " 128.5 " 24.40 " 5.279" 24
25 5.534" 4.373" 9.065" 15.26 " 27.89 " 143.8 " 525.1 " 287.0 " 279.1 " 118.1 " 24.84 " 5.900" 25
26 3.780" 5.250" 7.735" 15.49 " 27.39 " 139.3 " 507.2 " 307.8 " 258.8 " 109.6 " 22.15 " 7.558" 26
27 3.694" 4.798" 6.811" 15.13 " 27.13 " 132.0 " 471.1 " 381.5 " 251.8 " 102.1 " 23.22 " 5.711" 27
28 4.680" 5.739" 6.458" 15.02 " 26.52 " 131.6 " 422.4 " 399.1 " 240.9 " 96.05 " 22.43 " 6.798" 28
29 3.957" 6.616" 14.50 " 25.51 " 153.8 " 366.7 " 361.1 " 216.5 " 93.07 " 20.64 " 7.398" 29
30 3.440" 8.079" 14.00 " 24.70 " 227.6 " 348.2 " 434.1 " 197.0 " 97.44 " 19.51 " 8.424" 30
31 5.415" 10.24 " 23.76 " 381.5 " 650.9 " 95.07 " 9.446" 31
Mean 5.979" 4.099" 6.285" 12.18 " 35.16 " 141.3 " 707.1 " 619.0 " 462.7 " 153.5 " 50.90 " 9.818"
Median 6.504" 3.738" 6.458" 12.20 " 32.79 " 141.6 " 546.1 " 508.7 " 362.9 " 141.8 " 39.30 " 7.558"
Maximum 7.987" 7.457" 10.24 " 17.13 " 52.81 " 275.4 "1616 "1261 "1051 " 268.8 " 124.5 " 18.46 "
Minimum 3.440" 2.621" 3.736" 6.853" 13.76 " 23.89 " 309.2 " 286.5 " 197.0 " 93.07 " 19.51 " 5.279"
Total 185.3 " 114.7 " 194.8 " 365.4 " 1090 " 4239 "21922 "19189 "13883 " 4760 " 1527 " 304.3 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 185.6 " " ... Relative Uncertainty +/-10%
Ann. Median 33.25 "
Annual Total 67777 "
Maximum Minimum
Daily 1616 " 2.621"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2003
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 7.564" 5.010" 5.346" 8.002" 16.64 " 30.53 " 402.1 " 558.5 " 252.8 " 443.7 " 77.98 " 15.72 " 1
2 5.693" 5.013" 5.575" 6.685" 16.00 " 28.90 " 322.2 " 497.5 " 233.7 " 395.9 " 70.85 " 15.59 " 2
3 6.129" 5.463" 3.813" 7.638" 16.17 " 30.11 " 303.0 "1388 " 213.1 " 358.1 " 65.54 " 14.68 " 3
4 5.927" 5.387" 3.744" 6.861" 15.42 " 29.52 " 480.5 "2802 " 231.2 " 324.3 " 60.64 " 13.18 " 4
5 4.251" 4.256" 4.320" 6.802" 14.67 " 29.43 " 806.0 "1813 " 279.0 " 289.7 " 55.96 " 12.96 " 5
6 4.736" 3.569" 3.890" 7.297" 13.55 " 28.89 "1264 "1176 " 249.8 " 260.1 " 52.31 " 12.71 " 6
7 4.998" 3.384" 3.532" 9.318" 12.03 " 28.14 " 960.1 " 877.5 " 230.4 " 235.7 " 49.72 " 10.60 " 7
8 4.738" 3.371" 3.659" 8.113" 11.14 " 26.99 " 651.1 " 681.4 " 238.7 " 214.7 " 46.62 " 10.53 " 8
9 4.579" 2.903" 3.652" 7.578" 10.13 " 26.19 " 615.5 " 554.8 " 268.3 " 194.4 " 44.10 " 11.45 " 9
10 3.451" 3.902" 3.302" 7.457" 9.666" 26.57 " 987.6 " 492.7 " 418.4 " 177.8 " 40.62 " 10.99 " 10
11 4.947" 3.178" 3.427" 10.19 " 10.79 " 25.99 "2035 " 744.1 " 747.4 " 162.6 " 38.04 " 11.09 " 11
12 3.534" 3.896" 3.985" 14.70 " 12.41 " 25.03 "1535 " 916.6 " 771.8 " 152.9 " 34.46 " 8.176" 12
13 4.119" 3.095" 4.429" 18.40 " 12.73 " 24.77 " 946.8 " 726.0 " 729.8 " 158.3 " 34.46 " 8.971" 13
14 4.636" 3.113" 5.210" 15.51 " 12.65 " 24.68 " 933.9 " 569.4 " 624.4 " 184.9 " 32.53 " 8.359" 14
15 4.824" 2.944" 4.712" 14.96 " 14.63 " 24.46 " 929.2 " 477.6 " 504.4 " 191.8 " 30.16 " 10.98 " 15
16 3.983" 6.891" 8.950" 17.12 " 18.66 " 24.27 " 702.9 " 463.7 " 417.7 " 182.0 " 28.60 " 9.724" 16
17 3.868" 12.62 " 11.07 " 15.37 " 29.21 " 24.02 " 550.6 " 453.9 " 360.8 " 163.3 " 28.12 " 6.690" 17
18 3.004" 18.50 " 9.530" 16.14 " 24.17 " 23.56 " 466.9 " 410.1 " 319.3 " 152.4 " 36.38 " 8.895" 18
19 3.595" 25.34 " 6.760" 16.10 " 24.15 " 23.29 " 402.3 " 372.1 " 291.4 " 142.4 " 37.40 " 13.45 " 19
20 4.427" 21.32 " 7.622" 15.07 " 27.85 " 23.20 " 355.6 " 348.3 " 357.8 " 134.1 " 36.56 " 9.799" 20
21 5.147" 15.05 " 7.213" 14.42 " 34.83 " 23.14 " 346.2 " 356.9 " 737.6 " 126.6 " 34.60 " 9.886" 21
22 4.594" 11.92 " 8.123" 13.18 " 34.64 " 23.14 " 350.7 " 637.4 "1449 " 117.4 " 34.12 " 10.53 " 22
23 3.920" 12.21 " 8.216" 13.47 " 29.53 " 24.11 " 330.9 " 712.1 "1960 " 108.8 " 33.23 " 9.206" 23
24 3.748" 9.385" 9.248" 14.24 " 29.35 " 33.96 " 290.5 " 584.5 "1835 " 100.6 " 30.45 " 6.662" 24
25 4.999" 7.892" 9.796" 24.89 " 32.24 " 316.3 " 268.1 " 492.7 "1501 " 92.66 " 26.39 " 7.890" 25
26 3.771" 6.310" 10.45 " 16.56 " 31.20 " 280.8 " 281.3 " 416.1 "1192 " 86.94 " 25.95 " 9.665" 26
27 5.666" 5.678" 8.237" 18.44 " 28.79 " 430.6 " 300.1 " 362.5 " 904.7 " 82.21 " 26.06 " 7.802" 27
28 6.162" 5.065" 6.893" 17.11 " 27.13 " 741.5 " 292.2 " 335.0 " 693.6 " 77.85 " 22.72 " 6.896" 28
29 5.978" 6.018" 16.42 " 25.63 " 661.7 " 261.5 " 311.3 " 562.5 " 87.33 " 18.45 " 7.890" 29
30 5.365" 6.122" 17.46 " 26.87 " 511.0 " 315.1 " 297.3 " 494.0 " 87.86 " 16.29 " 8.808" 30
31 4.158" 6.980" 31.56 " 551.1 " 276.0 " 86.04 " 7.932" 31
Mean 4.726" 7.739" 6.252" 13.18 " 21.11 " 119.1 " 620.6 " 680.9 " 635.7 " 179.8 " 38.98 " 10.25 "
Median 4.636" 5.226" 6.018" 14.56 " 18.66 " 26.78 " 466.9 " 497.5 " 456.2 " 158.3 " 34.53 " 9.799"
Maximum 7.564" 25.34 " 11.07 " 24.89 " 34.83 " 741.5 "2035 "2802 "1960 " 443.7 " 77.98 " 15.72 "
Minimum 3.004" 2.903" 3.302" 6.685" 9.666" 23.14 " 261.5 " 276.0 " 213.1 " 77.85 " 16.29 " 6.662"
Total 146.5 " 216.7 " 193.8 " 395.5 " 654.5 " 3575 "19241 "21108 "19072 " 5574 " 1169 " 317.7 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 196.3 " " ... Relative Uncertainty +/-10%
Ann. Median 25.03 "
Annual Total 71666 "
Maximum Minimum
Daily 2802 " 2.903"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2004
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 6.169" 3.949" 4.540" 7.573" 13.66 " 22.87 " 499.1 " 318.8 " 772.1 " 107.3 " 42.75 " 23.07 " 1
2 6.148" 3.581" 5.855" 7.752" 13.34 " 22.04 " 477.7 " 366.7 " 649.9 " 105.7 " 41.58 " 20.64 " 2
3 6.658" 3.794" 5.553" 5.401" 12.49 " 21.05 " 739.0 " 338.5 " 543.1 " 104.9 " 40.39 " 18.05 " 3
4 5.777" 3.331" 4.991" 5.221" 11.41 " 21.55 " 701.2 " 308.2 " 467.2 " 98.42 " 39.22 " 15.94 " 4
5 9.951" 3.169" 7.939" 7.127" 11.47 " 22.23 " 548.6 " 379.7 " 434.4 " 94.87 " 42.06 " 16.02 " 5
6 11.18 " 3.787" 6.990" 9.308" 11.22 " 24.01 " 457.0 " 576.0 " 421.1 " 94.47 " 44.19 " 14.04 " 6
7 10.47 " 4.066" 7.206" 7.178" 13.26 " 39.54 " 677.8 " 540.6 " 445.5 " 104.2 " 40.06 " 13.29 " 7
8 10.01 " 3.843" 7.254" 7.836" 14.72 " 61.57 "1430 " 448.9 " 424.5 " 122.9 " 38.73 " 12.33 " 8
9 14.44 " 3.988" 7.080" 6.483" 16.63 " 92.63 "1350 " 379.0 " 385.6 " 116.5 " 38.25 " 9.359" 9
10 8.569" 4.788" 8.000" 5.760" 19.19 " 109.9 " 927.0 " 330.6 " 349.7 " 109.1 " 36.64 " 8.444" 10
11 6.653" 5.958" 6.536" 5.939" 20.70 " 281.9 " 683.1 " 314.8 " 315.1 " 104.4 " 37.03 " 8.732" 11
12 6.321" 5.692" 6.718" 8.782" 24.21 " 655.9 " 547.1 " 505.3 " 282.6 " 122.7 " 37.32 " 8.424" 12
13 6.276" 4.514" 4.572" 10.26 " 23.32 " 937.2 " 466.1 " 612.6 " 256.8 " 173.1 " 37.85 " 7.559" 13
14 5.067" 5.516" 4.535" 10.01 " 28.95 " 572.8 " 402.0 " 610.1 " 238.4 " 154.2 " 37.44 " 7.593" 14
15 4.285" 4.869" 5.650" 9.926" 28.29 " 372.6 " 351.3 " 611.8 " 223.2 " 132.3 " 36.17 " 7.416" 15
16 4.396" 3.892" 7.790" 11.19 " 25.65 " 298.6 " 315.4 " 526.1 " 209.6 " 116.9 " 34.28 " 6.976" 16
17 4.204" 3.716" 7.788" 11.21 " 25.11 " 734.4 " 284.0 " 460.5 " 198.2 " 106.0 " 34.20 " 7.200" 17
18 4.604" 4.300" 7.219" 11.89 " 31.08 " 810.1 " 267.2 " 453.7 " 188.3 " 96.83 " 33.46 " 10.65 " 18
19 4.321" 3.897" 6.029" 12.86 " 27.12 " 522.2 " 248.2 " 429.2 " 184.8 " 87.79 " 32.40 " 9.469" 19
20 5.125" 4.469" 5.591" 14.02 " 24.35 " 380.2 " 226.3 " 418.3 " 196.7 " 80.23 " 30.06 " 9.737" 20
21 6.218" 3.775" 4.874" 15.46 " 29.79 " 309.9 " 249.9 " 587.7 " 193.9 " 80.99 " 30.62 " 8.242" 21
22 5.110" 3.921" 5.621" 15.94 " 32.71 " 431.8 " 558.0 " 687.6 " 173.0 " 76.98 " 27.17 " 7.520" 22
23 5.304" 3.527" 7.162" 15.82 " 29.44 " 791.2 " 686.8 " 826.0 " 159.9 " 72.19 " 25.44 " 7.453" 23
24 5.063" 5.059" 6.227" 16.94 " 28.19 " 611.7 " 563.7 "1327 " 148.9 " 68.26 " 23.35 " 8.832" 24
25 4.293" 4.708" 5.373" 19.45 " 27.50 " 457.8 " 458.9 "2017 " 140.0 " 63.49 " 22.84 " 7.272" 25
26 3.552" 3.639" 5.752" 17.57 " 26.18 " 363.1 " 391.9 "2654 " 132.8 " 58.91 " 24.21 " 6.937" 26
27 3.992" 3.537" 6.473" 14.00 " 24.72 " 418.2 " 343.6 "2928 " 127.6 " 54.80 " 22.96 " 14.82 " 27
28 4.055" 4.785" 6.429" 13.11 " 23.72 "1054 " 309.7 "2280 " 122.8 " 51.87 " 22.86 " 17.06 " 28
29 4.724" 4.688" 6.974" 14.08 " 22.77 " 896.8 " 286.8 "1610 " 116.3 " 48.58 " 22.81 " 8.411" 29
30 4.100" 7.122" 12.97 " 21.89 " 632.6 " 294.2 "1177 " 110.9 " 45.37 " 22.67 " 7.851" 30
31 3.821" 7.569" 22.19 " 301.1 " 929.1 " 43.42 " 6.990" 31
Mean 6.157" 4.233" 6.368" 11.03 " 22.10 " 399.0 " 517.5 " 837.3 " 287.1 " 93.50 " 33.30 " 10.85 "
Median 5.125" 3.949" 6.473" 10.72 " 23.72 " 376.4 " 458.9 " 540.6 " 216.4 " 96.83 " 35.22 " 8.732"
Maximum 14.44 " 5.958" 8.000" 19.45 " 32.71 "1054 "1430 "2928 " 772.1 " 173.1 " 44.19 " 23.07 "
Minimum 3.552" 3.169" 4.535" 5.221" 11.22 " 21.05 " 226.3 " 308.2 " 110.9 " 43.42 " 22.67 " 6.937"
Total 190.8 " 122.7 " 197.4 " 331.1 " 685.3 "11972 "16044 "25958 " 8614 " 2898 " 999.1 " 336.3 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 186.7 " " ... Relative Uncertainty +/-10%
Ann. Median 24.54 "
Annual Total 68351 "
Maximum Minimum
Daily 2928 " 3.169"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2005
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 7.802" 4.034" 7.077" 16.24 " 23.26 " 80.60 " 470.1 " 241.3 " 398.6 " 494.3 " 175.8 " 59.73 " 1
2 7.957" 5.290" 6.800" 37.24 " 28.23 " 74.82 " 398.4 " 259.9 " 358.2 " 610.4 " 159.9 " 54.27 " 2
3 7.540" 5.974" 5.989" 34.47 " 38.42 " 73.85 " 369.4 " 317.4 " 342.6 " 571.9 " 150.9 " 48.66 " 3
4 7.908" 4.868" 5.432" 35.25 " 31.23 " 76.47 " 665.6 " 299.3 " 339.8 " 520.8 " 141.9 " 43.24 " 4
5 7.398" 4.656" 5.904" 27.49 " 30.11 " 79.91 " 739.4 " 277.0 " 416.1 " 549.4 " 138.3 " 41.32 " 5
6 6.536" 4.581" 4.836" 22.98 " 30.11 " 83.77 " 560.2 " 263.2 "1757 " 672.0 " 138.9 " 40.42 " 6
7 6.735" 4.141" 4.877" 20.77 " 30.00 " 114.1 " 450.5 " 257.7 "3260 " 979.8 " 140.9 " 36.40 " 7
8 6.302" 4.428" 7.290" 19.12 " 29.64 " 169.7 " 385.2 " 247.5 "3569 " 887.2 " 137.4 " 27.76 " 8
9 6.318" 4.123" 7.142" 16.85 " 29.01 " 332.6 " 344.5 " 228.6 "2586 " 717.4 " 135.6 " 26.17 " 9
10 6.069" 4.113" 6.941" 17.06 " 26.56 " 940.7 " 305.9 " 217.1 "1828 " 621.6 " 128.4 " 32.56 " 10
11 6.048" 3.560" 7.640" 16.72 " 27.79 "1124 " 275.4 " 218.1 "1324 " 523.9 " 116.2 " 35.02 " 11
12 5.513" 4.051" 9.005" 16.22 " 23.93 " 865.8 " 252.4 " 230.8 "1149 " 461.9 " 105.6 " 36.05 " 12
13 6.037" 5.118" 7.674" 15.58 " 26.28 " 818.9 " 295.8 " 542.8 "1105 " 420.2 " 97.28 " 36.17 " 13
14 6.387" 5.981" 9.171" 15.46 " 25.02 " 675.3 " 462.0 " 883.6 "1014 " 379.9 " 88.23 " 37.55 " 14
15 6.024" 9.687" 10.25 " 14.87 " 26.91 " 547.3 " 451.3 " 939.9 " 881.6 " 344.7 " 81.77 " 34.33 " 15
16 4.676" 8.543" 9.836" 14.41 " 41.86 " 482.0 " 393.6 "1633 " 737.7 " 310.5 " 75.03 " 34.45 " 16
17 6.126" 7.138" 8.951" 14.62 " 82.90 " 455.8 " 349.3 "3111 " 807.8 " 281.2 " 67.33 " 31.03 " 17
18 7.468" 8.751" 8.122" 14.44 " 167.0 " 445.8 " 309.0 "4365 "1048 " 262.7 " 61.40 " 28.71 " 18
19 5.677" 3.796" 7.274" 14.37 " 369.1 " 389.8 " 277.8 "4033 " 917.4 " 246.1 " 56.67 " 27.22 " 19
20 5.328" 4.100" 5.898" 13.85 " 671.8 " 329.4 " 260.1 "2192 " 754.8 " 231.6 " 52.35 " 26.26 " 20
21 4.990" 4.861" 6.215" 14.60 " 492.2 " 285.9 " 379.5 "1481 " 678.2 " 219.9 " 48.91 " 25.47 " 21
22 6.980" 7.420" 6.894" 16.58 " 336.3 " 256.4 " 538.9 "1165 " 613.8 " 243.0 " 44.61 " 25.14 " 22
23 4.931" 7.302" 6.974" 19.11 " 254.6 " 347.8 " 496.4 " 915.0 " 579.3 " 265.7 " 41.58 " 22.43 " 23
24 4.809" 6.384" 7.079" 18.80 " 202.6 " 687.4 " 449.7 " 746.8 " 533.8 " 241.2 " 39.69 " 21.45 " 24
25 4.028" 5.924" 7.015" 18.53 " 166.4 " 660.8 " 400.2 " 640.8 " 472.2 " 235.8 " 36.59 " 21.48 " 25
26 4.169" 9.099" 7.493" 17.79 " 142.2 " 509.4 " 370.9 " 570.3 " 427.0 " 242.6 " 34.88 " 21.78 " 26
27 4.903" 6.320" 7.714" 18.10 " 125.1 " 424.1 " 342.5 " 514.4 " 396.9 " 230.9 " 37.07 " 20.71 " 27
28 4.781" 7.336" 7.326" 18.56 " 113.0 " 362.0 " 332.4 " 500.7 " 396.6 " 208.7 " 41.71 " 20.31 " 28
29 4.551" 8.759" 24.78 " 103.7 " 338.8 " 316.8 " 517.4 " 385.6 " 190.9 " 58.52 " 18.87 " 29
30 4.287" 8.950" 24.05 " 95.01 " 459.6 " 294.7 " 484.0 " 378.4 " 180.6 " 66.07 " 16.58 " 30
31 3.495" 9.908" 87.71 " 264.0 " 439.6 " 181.7 " 16.33 " 31
Mean 5.864" 5.771" 7.433" 19.63 " 125.1 " 416.5 " 393.6 " 927.0 " 982.0 " 404.2 " 90.01 " 31.22 "
Median 6.037" 5.204" 7.274" 17.42 " 41.86 " 375.9 " 370.9 " 514.4 " 707.9 " 310.5 " 78.40 " 28.71 "
Maximum 7.957" 9.687" 10.25 " 37.24 " 671.8 "1124 " 739.4 "4365 "3569 " 979.8 " 175.8 " 59.73 "
Minimum 3.495" 3.560" 4.836" 13.85 " 23.26 " 73.85 " 252.4 " 217.1 " 339.8 " 180.6 " 34.88 " 16.33 "
Total 181.7 " 161.5 " 230.4 " 589.0 " 3878 "12495 "12203 "28738 "29461 "12530 " 2700 " 968.0 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 285.3 " " ... Relative Uncertainty +/-10%
Ann. Median 74.82 "
Annual Total 104139 "
Maximum Minimum
Daily 4365 " 3.495"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2006
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 16.62 " 17.10 " 11.41 " 11.66 " 18.99 " 17.45 " 22.74 " 98.20 " 380.5 " 94.89 " 26.18 " 11.65 " 1
2 16.67 " 15.01 " 11.29 " 11.54 " 18.49 " 16.86 " 23.57 " 99.51 " 354.9 " 89.38 " 24.28 " 10.26 " 2
3 17.83 " 13.82 " 10.93 " 13.21 " 17.51 " 15.86 " 23.58 " 101.8 " 298.2 " 86.07 " 23.11 " 9.945" 3
4 17.16 " 12.88 " 8.690" 14.32 " 18.24 " 15.60 " 22.96 " 92.81 " 257.9 " 87.76 " 22.30 " 11.91 " 4
5 15.35 " 12.17 " 7.910" 12.61 " 18.27 " 17.46 " 22.61 " 92.10 " 229.3 " 113.2 " 22.95 " 10.47 " 5
6 12.36 " 11.09 " 6.983" 11.21 " 18.59 " 19.17 " 22.41 " 102.8 " 204.2 " 113.3 " 22.26 " 10.79 " 6
7 12.14 " 11.81 " 7.944" 10.76 " 18.28 " 20.13 " 21.82 " 121.1 " 182.6 " 96.44 " 19.71 " 10.81 " 7
8 12.70 " 10.54 " 7.763" 10.15 " 17.95 " 19.39 " 21.46 " 283.8 " 166.9 " 85.11 " 18.19 " 11.94 " 8
9 12.86 " 9.390" 7.567" 10.79 " 20.09 " 18.77 " 22.66 " 407.0 " 150.8 " 75.86 " 17.34 " 11.24 " 9
10 11.84 " 10.30 " 8.347" 12.74 " 17.87 " 18.44 " 26.59 " 314.3 " 142.3 " 69.57 " 20.70 " 9.024" 10
11 10.49 " 9.103" 8.384" 12.23 " 17.20 " 17.65 " 25.62 " 233.2 " 172.0 " 66.30 " 18.45 " 8.616" 11
12 10.63 " 8.599" 7.458" 11.30 " 16.40 " 17.22 " 25.00 " 194.4 " 366.7 " 68.26 " 16.69 " 9.649" 12
13 10.79 " 8.892" 8.735" 12.38 " 16.34 " 18.02 " 25.51 " 198.9 " 484.3 " 78.80 " 16.29 " 8.821" 13
14 11.95 " 10.70 " 11.99 " 11.27 " 16.01 " 17.31 " 26.21 " 202.1 " 399.8 " 81.00 " 16.56 " 8.597" 14
15 10.92 " 9.488" 10.21 " 12.35 " 16.69 " 17.20 " 25.03 " 343.4 " 316.6 " 71.91 " 15.14 " 7.868" 15
16 13.65 " 8.996" 8.292" 12.95 " 15.18 " 16.95 " 23.88 " 620.1 " 263.1 " 65.48 " 13.89 " 7.405" 16
17 14.16 " 11.84 " 7.955" 13.26 " 20.25 " 16.72 " 23.12 " 531.5 " 227.8 " 61.04 " 14.82 " 7.417" 17
18 13.02 " 12.17 " 9.329" 14.15 " 23.72 " 16.88 " 22.13 " 384.5 " 205.7 " 56.98 " 14.08 " 7.802" 18
19 12.28 " 10.29 " 8.980" 12.68 " 19.36 " 17.34 " 21.86 " 494.4 " 195.0 " 52.40 " 14.50 " 8.264" 19
20 11.21 " 10.98 " 9.573" 10.97 " 15.44 " 18.82 " 25.12 " 645.3 " 186.2 " 48.69 " 22.74 " 7.817" 20
21 10.64 " 10.49 " 10.63 " 11.12 " 14.33 " 20.13 " 31.43 " 598.6 " 179.2 " 46.08 " 16.79 " 7.805" 21
22 10.08 " 9.618" 11.01 " 13.20 " 14.12 " 21.79 " 31.95 "1155 " 189.7 " 43.84 " 16.13 " 7.299" 22
23 10.17 " 9.296" 11.99 " 14.08 " 15.82 " 20.83 " 37.20 "2386 " 195.4 " 40.81 " 12.77 " 8.087" 23
24 13.06 " 9.644" 15.68 " 15.49 " 14.68 " 20.23 " 44.42 "1684 " 177.3 " 38.10 " 10.52 " 6.622" 24
25 15.00 " 10.13 " 18.53 " 17.74 " 14.57 " 19.79 " 56.37 " 968.6 " 160.5 " 36.45 " 10.51 " 7.132" 25
26 19.19 " 8.696" 18.72 " 19.49 " 16.06 " 19.91 " 60.72 " 668.7 " 145.0 " 34.94 " 9.124" 9.034" 26
27 22.03 " 10.30 " 18.15 " 18.65 " 17.26 " 20.21 " 71.33 " 510.8 " 131.5 " 32.40 " 8.828" 9.827" 27
28 21.61 " 13.19 " 16.11 " 18.50 " 16.91 " 22.39 " 81.10 " 411.4 " 121.4 " 29.94 " 9.947" 9.064" 28
29 21.73 " 12.06 " 19.04 " 18.93 " 22.55 " 92.39 " 342.1 " 111.8 " 29.07 " 12.80 " 7.735" 29
30 21.34 " 11.50 " 19.71 " 18.61 " 22.22 " 96.06 " 300.9 " 103.0 " 28.02 " 12.48 " 5.465" 30
31 18.59 " 11.73 " 17.12 " 88.14 " 304.5 " 27.55 " 5.839" 31
Mean 14.45 " 10.95 " 10.83 " 13.65 " 17.40 " 18.78 " 37.58 " 480.4 " 223.3 " 62.89 " 16.67 " 8.846"
Median 13.02 " 10.40 " 10.21 " 12.71 " 17.26 " 18.60 " 25.12 " 342.1 " 192.4 " 65.48 " 16.43 " 8.616"
Maximum 22.03 " 17.10 " 18.72 " 19.71 " 23.72 " 22.55 " 96.06 "2386 " 484.3 " 113.3 " 26.18 " 11.94 "
Minimum 10.08 " 8.599" 6.983" 10.15 " 14.12 " 15.60 " 21.46 " 92.10 " 103.0 " 27.55 " 8.828" 5.465"
Total 448.2 " 306.6 " 335.9 " 409.6 " 539.4 " 563.4 " 1165 "14894 " 6701 " 1949 " 500.2 " 274.2 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 76.95 " " ... Relative Uncertainty +/-10%
Ann. Median 17.51 "
Annual Total 28088 "
Maximum Minimum
Daily 2386 " 5.465"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2007
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 4.941" 4.521" 8.874" 7.387" 21.54 " 18.31 " 60.92 "1811 "1732 " 550.4 " 97.46 " 14.57 " 1
2 6.751" 4.091" 12.40 " 9.189" 22.63 " 17.58 " 73.48 "1393 "1244 " 482.4 " 89.61 " 14.96 " 2
3 11.34 " 4.093" 16.24 " 10.67 " 21.02 " 17.13 " 95.48 " 985.7 " 961.2 " 419.5 " 80.02 " 14.19 " 3
4 11.51 " 3.842" 17.01 " 9.447" 20.22 " 16.66 " 139.1 " 710.7 " 795.1 " 363.9 " 71.24 " 13.62 " 4
5 13.05 " 4.202" 15.49 " 8.843" 19.48 " 16.25 " 124.7 " 552.7 " 790.1 " 322.2 " 64.59 " 14.44 " 5
6 12.13 " 6.183" 13.60 " 7.718" 18.85 " 15.82 " 97.93 " 524.2 " 684.5 " 289.0 " 58.82 " 14.68 " 6
7 13.19 " 6.143" 9.835" 8.295" 18.08 " 15.74 " 81.82 " 746.7 " 623.0 " 260.0 " 54.52 " 13.53 " 7
8 13.33 " 4.884" 7.648" 8.007" 17.09 " 14.62 " 113.9 " 734.7 " 737.5 " 247.3 " 50.97 " 13.11 " 8
9 12.32 " 4.761" 6.902" 8.919" 15.91 " 14.95 " 199.0 " 565.0 " 696.1 " 341.7 " 47.44 " 13.03 " 9
10 9.701" 5.491" 6.960" 10.99 " 25.16 " 14.45 " 200.9 " 510.6 " 570.8 " 401.6 " 43.49 " 12.12 " 10
11 8.561" 5.210" 9.001" 10.61 " 23.81 " 15.18 " 155.1 " 642.4 " 490.5 " 365.5 " 40.94 " 12.16 " 11
12 6.987" 5.014" 8.602" 9.252" 18.08 " 15.22 " 126.9 " 641.6 " 547.6 " 327.4 " 37.36 " 11.94 " 12
13 7.725" 6.438" 9.073" 9.271" 16.30 " 15.37 " 108.5 " 511.9 " 980.5 " 282.2 " 36.27 " 11.07 " 13
14 7.859" 6.540" 7.440" 8.507" 15.24 " 15.88 " 95.53 " 440.8 "1031 " 246.5 " 33.46 " 10.40 " 14
15 7.288" 6.727" 6.740" 10.89 " 14.93 " 16.52 " 85.64 " 397.8 "1031 " 212.7 " 31.81 " 9.516" 15
16 7.905" 6.671" 6.259" 16.22 " 14.72 " 15.94 " 77.25 " 348.5 "1029 " 186.8 " 29.82 " 9.670" 16
17 7.705" 8.538" 5.859" 16.75 " 14.50 " 16.79 " 70.00 " 307.1 " 887.2 " 171.0 " 29.14 " 13.12 " 17
18 6.356" 9.733" 6.368" 17.32 " 14.28 " 16.75 " 64.44 " 278.5 " 809.7 " 177.8 " 27.99 " 14.58 " 18
19 6.155" 9.473" 7.728" 16.30 " 14.43 " 17.12 " 63.72 " 257.3 " 787.6 " 189.7 " 26.90 " 16.00 " 19
20 5.930" 10.06 " 7.538" 15.87 " 14.54 " 17.45 " 101.1 " 252.0 " 711.8 " 173.8 " 25.99 " 20.80 " 20
21 6.205" 8.606" 7.824" 15.34 " 14.13 " 17.41 " 173.7 " 261.8 " 697.8 " 162.0 " 24.87 " 20.48 " 21
22 7.213" 7.026" 7.481" 15.73 " 14.06 " 17.71 " 296.0 " 246.5 " 671.7 " 165.6 " 23.38 " 19.06 " 22
23 7.917" 6.118" 6.944" 16.35 " 14.35 " 18.38 " 584.1 " 426.4 " 624.5 " 139.2 " 22.09 " 17.51 " 23
24 6.546" 5.527" 7.779" 15.86 " 14.25 " 22.27 "1072 " 506.1 " 801.3 " 124.8 " 21.56 " 15.83 " 24
25 5.721" 6.112" 8.575" 15.18 " 14.60 " 21.56 "1388 " 447.3 "1327 " 114.1 " 20.80 " 13.98 " 25
26 4.977" 6.558" 9.387" 14.22 " 16.61 " 20.28 "1171 " 826.6 "1228 " 108.7 " 18.62 " 12.38 " 26
27 4.113" 7.244" 11.01 " 13.63 " 16.36 " 22.32 " 824.4 "2464 "1114 " 106.8 " 16.74 " 12.53 " 27
28 4.986" 7.854" 10.40 " 13.57 " 19.87 " 45.90 " 931.6 "2001 " 940.3 " 110.8 " 14.82 " 11.56 " 28
29 5.716" 9.826" 14.55 " 21.41 " 45.62 "1123 "1782 " 776.6 " 115.1 " 14.12 " 9.283" 29
30 6.665" 8.979" 17.29 " 19.11 " 47.67 " 927.8 "3358 " 642.6 " 110.2 " 14.45 " 8.011" 30
31 6.077" 8.147" 19.08 " 1474 "3079 " 104.8 " 7.269" 31
Mean 7.965" 6.345" 9.224" 12.40 " 17.57 " 20.09 " 390.4 " 903.7 " 865.6 " 237.9 " 38.98 " 13.40 "
Median 7.213" 6.163" 8.575" 12.28 " 16.61 " 16.95 " 126.9 " 552.7 " 792.6 " 189.7 " 30.82 " 13.12 "
Maximum 13.33 " 10.06 " 17.01 " 17.32 " 25.16 " 47.67 "1474 "3358 "1732 " 550.4 " 97.46 " 20.80 "
Minimum 4.113" 3.842" 5.859" 7.387" 14.06 " 14.45 " 60.92 " 246.5 " 490.5 " 104.8 " 14.12 " 7.269"
Total 246.9 " 177.6 " 285.9 " 372.2 " 544.7 " 602.9 "12104 "28015 "25968 " 7375 " 1169 " 415.5 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 211.7 " " ... Relative Uncertainty +/-10%
Ann. Median 17.13 "
Annual Total 77279 "
Maximum Minimum
Daily 3358 " 3.842"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2008
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 8.746" 6.706" 5.671" 13.75 " 17.07 " 61.96 " 204.7 "1670 " 88.87 " 163.2 " 66.00 " 37.42 " 1
2 10.99 " 6.491" 6.550" 13.79 " 17.40 " 56.07 " 170.4 "1383 " 89.30 " 151.6 " 62.68 " 34.91 " 2
3 10.95 " 6.786" 7.364" 13.60 " 17.06 " 53.29 " 146.7 "1448 " 89.79 " 142.4 " 58.95 " 31.80 " 3
4 9.456" 6.339" 8.899" 16.95 " 16.69 " 50.71 " 130.9 "1067 " 85.91 " 130.9 " 59.06 " 29.67 " 4
5 7.131" 6.168" 9.234" 17.22 " 15.99 " 47.37 " 119.4 " 776.2 " 80.52 " 124.1 " 59.50 " 27.93 " 5
6 6.216" 6.801" 7.620" 17.23 " 16.70 " 47.21 " 110.6 " 617.3 " 75.42 " 125.1 " 63.13 " 25.29 " 6
7 6.251" 5.808" 8.448" 16.31 " 16.93 " 40.58 " 102.7 " 519.1 " 70.95 " 118.9 " 67.32 " 23.53 " 7
8 8.731" 7.461" 8.693" 16.16 " 16.64 " 37.90 " 95.42 " 453.3 " 66.89 " 107.8 " 68.24 " 22.71 " 8
9 9.512" 7.077" 8.617" 15.32 " 16.37 " 41.49 " 93.13 " 396.5 " 63.53 " 97.11 " 67.30 " 22.37 " 9
10 9.253" 8.656" 8.632" 15.36 " 19.24 " 50.54 " 99.10 " 351.5 " 61.19 " 89.28 " 58.28 " 21.70 " 10
11 8.827" 8.721" 8.427" 15.32 " 21.10 " 73.42 " 122.8 " 313.2 " 60.07 " 82.29 " 51.71 " 20.02 " 11
12 8.305" 6.742" 8.207" 14.60 " 20.91 " 81.78 " 153.4 " 277.3 " 59.51 " 76.63 " 49.22 " 18.47 " 12
13 8.020" 5.939" 7.045" 13.50 " 20.34 " 73.67 " 146.6 " 246.5 " 61.10 " 72.34 " 44.07 " 18.04 " 13
14 9.600" 5.613" 8.071" 13.35 " 18.69 " 68.47 " 135.1 " 224.5 " 63.65 " 68.35 " 40.80 " 17.42 " 14
15 9.354" 6.039" 8.496" 13.26 " 18.72 " 70.61 " 168.6 " 206.6 " 65.40 " 52.79 " 37.65 " 15.39 " 15
16 8.130" 6.185" 8.354" 12.97 " 22.91 " 93.39 " 393.8 " 195.3 " 63.99 " 52.27 " 34.78 " 15.61 " 16
17 6.588" 6.091" 8.440" 15.56 " 23.63 " 113.8 " 432.1 " 182.6 " 66.13 " 54.38 " 33.00 " 12.78 " 17
18 6.581" 8.754" 10.51 " 19.83 " 20.63 " 118.4 " 518.3 " 169.7 " 80.53 " 51.71 " 31.49 " 12.01 " 18
19 6.644" 10.91 " 9.696" 19.10 " 19.55 " 103.2 "1140 " 162.3 " 127.9 " 48.83 " 29.58 " 11.50 " 19
20 5.752" 9.549" 9.942" 19.03 " 19.40 " 89.87 "1146 " 156.1 " 149.1 " 45.82 " 28.43 " 10.32 " 20
21 6.747" 9.741" 9.658" 19.33 " 19.19 " 79.79 " 732.4 " 149.6 " 140.4 " 43.25 " 28.09 " 11.65 " 21
22 8.376" 8.344" 9.141" 18.66 " 22.67 " 72.79 " 521.1 " 140.5 " 140.8 " 42.39 " 27.79 " 11.54 " 22
23 7.999" 7.326" 7.843" 18.06 " 30.45 " 69.28 " 607.3 " 131.2 " 139.7 " 42.15 " 28.61 " 9.799" 23
24 7.251" 8.009" 9.025" 18.01 " 30.63 " 66.54 "1473 " 122.2 " 125.2 " 42.44 " 31.42 " 8.540" 24
25 6.341" 7.381" 10.60 " 16.83 " 33.29 " 67.26 "1378 " 112.6 " 171.4 " 48.97 " 32.41 " 8.233" 25
26 5.550" 7.700" 10.20 " 15.91 " 33.59 " 72.48 " 881.3 " 106.4 " 297.4 " 96.63 " 31.18 " 11.90 " 26
27 5.363" 6.616" 8.888" 16.09 " 42.66 " 79.43 " 669.8 " 100.7 " 276.8 " 121.6 " 32.67 " 13.37 " 27
28 6.067" 6.546" 8.090" 16.25 " 61.10 " 116.5 " 657.5 " 96.89 " 232.5 " 96.43 " 35.48 " 12.04 " 28
29 7.614" 5.625" 8.189" 15.90 " 62.33 " 182.5 " 855.6 " 94.54 " 201.9 " 79.61 " 34.63 " 10.10 " 29
30 7.114" 8.008" 16.95 " 55.21 " 229.5 "1081 " 92.48 " 180.9 " 67.09 " 38.66 " 11.91 " 30
31 7.370" 10.23 " 63.74 " 1654 " 90.78 " 68.84 " 9.398" 31
Mean 7.769" 7.246" 8.607" 16.14 " 26.80 " 80.33 " 520.8 " 388.9 " 115.9 " 84.05 " 44.41 " 17.66 "
Median 7.614" 6.786" 8.496" 16.13 " 20.34 " 71.55 " 393.8 " 195.3 " 87.39 " 76.63 " 38.16 " 15.39 "
Maximum 10.99 " 10.91 " 10.60 " 19.83 " 63.74 " 229.5 "1654 "1670 " 297.4 " 163.2 " 68.24 " 37.42 "
Minimum 5.363" 5.613" 5.671" 12.97 " 15.99 " 37.90 " 93.13 " 90.78 " 59.51 " 42.15 " 27.79 " 8.233"
Total 240.8 " 210.1 " 266.8 " 484.3 " 830.9 " 2410 "16145 "12056 " 3477 " 2605 " 1332 " 547.5 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 110.9 " " ... Relative Uncertainty +/-10%
Ann. Median 32.54 "
Annual Total 40608 "
Maximum Minimum
Daily 1670 " 5.363"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2009
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 7.251" 6.370" 10.65 " 13.13 " 8.528" 18.31 "1721 " 428.8 " 332.1 " 476.4 " 60.66 " 28.39 " 1
2 7.012" 6.312" 11.04 " 12.25 " 7.982" 18.23 " 860.0 " 383.3 " 397.2 " 426.4 " 55.45 " 26.65 " 2
3 6.757" 8.748" 13.45 " 13.91 " 7.606" 18.16 " 558.6 " 348.3 " 415.2 " 400.4 " 51.52 " 26.04 " 3
4 7.341" 7.655" 10.93 " 12.40 " 6.993" 26.05 " 415.4 " 320.7 " 357.1 " 377.0 " 46.72 " 24.10 " 4
5 7.503" 7.378" 9.646" 11.00 " 8.204" 29.97 " 334.9 " 298.6 " 352.1 " 337.2 " 44.04 " 19.16 " 5
6 6.257" 6.009" 8.939" 11.84 " 7.519" 23.35 " 287.1 " 338.6 " 373.9 " 300.3 " 43.55 " 16.95 " 6
7 6.555" 5.595" 8.694" 10.88 " 7.536" 22.42 " 259.1 " 458.2 " 359.7 " 270.3 " 41.96 " 18.45 " 7
8 6.339" 5.474" 8.644" 9.317" 7.209" 21.98 " 242.8 " 426.9 " 461.6 " 252.1 " 40.36 " 18.91 " 8
9 6.246" 5.862" 7.112" 9.244" 7.161" 21.20 " 246.2 " 369.3 " 502.2 " 237.0 " 39.85 " 17.92 " 9
10 6.308" 6.954" 7.256" 8.113" 7.741" 24.01 " 522.7 " 342.2 " 483.6 " 221.4 " 38.50 " 15.41 " 10
11 6.334" 7.189" 7.164" 7.742" 9.275" 29.34 " 864.7 " 371.0 " 769.1 " 205.8 " 37.24 " 13.19 " 11
12 5.470" 6.748" 6.769" 7.011" 9.865" 23.29 " 738.0 " 446.8 "1277 " 188.9 " 38.45 " 10.97 " 12
13 7.383" 6.080" 6.800" 7.717" 10.30 " 23.85 " 514.8 " 603.1 "1202 " 177.0 " 46.89 " 9.948" 13
14 6.760" 5.718" 8.014" 8.308" 9.476" 26.27 " 397.5 "1147 " 929.3 " 164.3 " 52.21 " 12.32 " 14
15 6.349" 4.967" 7.546" 8.106" 9.640" 27.56 " 330.3 "3018 "1016 " 152.4 " 62.46 " 14.68 " 15
16 5.583" 5.442" 7.158" 7.400" 9.842" 30.38 " 360.1 "4028 "1055 " 142.1 " 55.73 " 15.53 " 16
17 6.094" 8.532" 9.058" 7.141" 9.056" 33.77 " 638.3 "2445 " 899.2 " 131.0 " 50.65 " 15.76 " 17
18 5.770" 8.066" 8.968" 6.925" 9.980" 33.47 " 740.3 "1760 "1034 " 120.6 " 48.31 " 15.08 " 18
19 6.122" 7.326" 9.308" 7.720" 9.619" 39.16 "1436 "1623 "1316 " 111.5 " 47.64 " 13.49 " 19
20 6.321" 6.517" 10.53 " 8.057" 10.45 " 40.34 "3685 "1346 "1161 " 103.1 " 42.52 " 11.43 " 20
21 7.086" 5.717" 11.08 " 8.806" 13.15 " 80.98 "5286 "1168 "1521 " 96.33 " 43.42 " 9.539" 21
22 6.502" 5.202" 10.90 " 8.725" 19.84 " 136.9 "3568 "1021 "1903 " 88.00 " 50.07 " 8.134" 22
23 6.278" 5.441" 12.45 " 9.334" 21.12 " 138.0 "2663 " 942.5 "1576 " 81.31 " 46.50 " 9.071" 23
24 6.457" 17.08 " 12.41 " 10.02 " 28.40 " 109.6 "2369 " 811.9 "1185 " 74.79 " 42.20 " 10.04 " 24
25 7.380" 12.62 " 11.76 " 9.610" 36.25 " 122.2 "1625 " 681.2 " 918.6 " 69.03 " 37.94 " 9.546" 25
26 6.016" 11.24 " 10.44 " 9.147" 31.15 " 192.5 "1256 " 591.9 " 735.0 " 65.20 " 36.47 " 10.42 " 26
27 8.615" 10.79 " 9.262" 8.727" 26.51 " 265.7 "1021 " 519.5 " 608.4 " 62.07 " 34.33 " 10.70 " 27
28 7.098" 10.42 " 9.925" 8.684" 23.46 " 525.2 " 828.8 " 462.2 " 562.1 " 61.87 " 33.31 " 12.80 " 28
29 6.106" 11.42 " 8.909" 21.50 "1597 " 686.9 " 413.4 " 593.3 " 61.95 " 31.70 " 12.46 " 29
30 5.049" 10.37 " 8.687" 19.80 "3316 " 569.7 " 368.5 " 542.4 " 64.10 " 30.29 " 12.98 " 30
31 5.825" 13.80 " 18.92 " 488.8 " 339.7 " 64.85 " 12.92 " 31
Mean 6.522" 7.552" 9.727" 9.297" 14.00 " 233.8 "1145 " 897.7 " 828.1 " 180.1 " 44.36 " 14.93 "
Median 6.339" 6.633" 9.646" 8.767" 9.842" 30.18 " 686.9 " 462.2 " 752.0 " 142.1 " 43.48 " 13.19 "
Maximum 8.615" 17.08 " 13.80 " 13.91 " 36.25 "3316 "5286 "4028 "1903 " 476.4 " 62.46 " 28.39 "
Minimum 5.049" 4.967" 6.769" 6.925" 6.993" 18.16 " 242.8 " 298.6 " 332.1 " 61.87 " 30.29 " 8.134"
Total 202.1 " 211.4 " 301.5 " 278.9 " 434.1 " 7016 "35520 "27828 "24845 " 5585 " 1331 " 463.1 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 284.9 " " ... Relative Uncertainty +/-10%
Ann. Median 23.85 "
Annual Total 104019 "
Maximum Minimum
Daily 5286 " 4.967"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2010
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 10.32 " 5.239" 5.707" 11.02 " 11.85 " 21.53 " 22.26 " 67.39 " 35.81 " 20.10 " 7.338" 6.828" 1
2 8.776" 7.589" 6.572" 9.745" 12.00 " 21.24 " 23.05 " 60.70 " 35.39 " 21.18 " 8.530" 6.716" 2
3 9.026" 8.001" 6.969" 9.581" 11.89 " 20.50 " 23.72 " 55.74 " 34.37 " 20.28 " 7.703" 7.061" 3
4 11.08 " 7.654" 6.991" 12.29 " 12.03 " 19.93 " 22.14 " 51.40 " 33.26 " 18.64 " 7.183" 8.160" 4
5 12.31 " 7.051" 7.796" 13.21 " 12.15 " 19.72 " 20.75 " 48.11 " 31.87 " 17.58 " 7.723" 7.938" 5
6 10.70 " 8.444" 6.824" 14.44 " 11.19 " 19.34 " 20.19 " 45.42 " 31.26 " 17.55 " 8.152" 9.410" 6
7 9.256" 9.088" 7.348" 14.72 " 11.59 " 19.18 " 20.08 " 43.86 " 31.90 " 17.10 " 7.785" 10.12 " 7
8 8.544" 11.66 " 7.278" 13.53 " 11.38 " 18.82 " 21.30 " 42.14 " 34.86 " 17.09 " 7.583" 9.984" 8
9 9.214" 10.72 " 7.240" 12.85 " 11.77 " 18.49 " 24.85 " 40.72 " 37.32 " 16.05 " 9.233" 10.42 " 9
10 8.996" 9.775" 8.080" 10.70 " 12.00 " 17.72 " 29.21 " 39.31 " 38.67 " 15.47 " 14.52 " 8.667" 10
11 8.246" 8.787" 8.001" 9.055" 11.88 " 17.04 " 32.28 " 38.05 " 40.30 " 15.85 " 18.74 " 9.368" 11
12 8.353" 7.974" 7.893" 9.314" 11.57 " 16.60 " 69.84 " 43.56 " 39.01 " 16.35 " 18.43 " 8.853" 12
13 8.198" 7.077" 7.213" 12.32 " 12.25 " 16.53 " 83.08 " 53.35 " 37.29 " 15.75 " 15.04 " 7.927" 13
14 8.245" 7.092" 7.073" 17.21 " 12.68 " 18.00 " 84.54 " 67.79 " 35.57 " 15.17 " 13.72 " 7.543" 14
15 7.404" 8.280" 7.807" 21.57 " 13.15 " 20.01 " 78.42 " 74.43 " 33.52 " 15.17 " 16.36 " 7.510" 15
16 6.245" 9.923" 8.338" 22.57 " 13.29 " 20.31 " 64.78 " 69.17 " 32.72 " 13.56 " 16.86 " 6.467" 16
17 5.529" 9.087" 8.817" 20.75 " 13.17 " 19.64 " 56.87 " 64.97 " 31.48 " 12.94 " 15.71 " 5.927" 17
18 5.788" 9.814" 7.419" 19.02 " 13.36 " 19.81 " 51.75 " 61.38 " 29.30 " 12.07 " 14.30 " 5.528" 18
19 8.731" 7.662" 7.409" 17.93 " 13.36 " 19.81 " 47.83 " 57.88 " 26.95 " 12.18 " 12.35 " 4.646" 19
20 7.777" 8.311" 7.708" 17.09 " 13.37 " 19.85 " 46.63 " 54.72 " 24.83 " 12.39 " 10.94 " 5.532" 20
21 7.006" 10.37 " 7.479" 16.11 " 13.35 # 20.15 " 44.78 " 52.72 " 24.30 " 12.78 " 9.984" 7.210" 21
22 6.934" 10.60 " 6.931" 15.67 " 14.65 # 20.57 " 43.27 " 50.19 " 24.25 " 14.14 " 9.420" 7.695" 22
23 8.094" 9.647" 9.004" 14.97 " 16.88 # 37.78 " 41.60 " 47.87 " 22.62 " 14.12 " 9.272" 6.792" 23
24 7.114" 8.642" 11.60 " 14.17 " 20.64 # 27.99 " 39.41 " 46.53 " 22.57 " 11.67 " 9.181" 5.610" 24
25 6.234" 6.590" 11.68 " 13.48 " 17.41 " 23.98 " 37.52 " 44.79 " 21.43 " 11.23 " 8.090" 5.904" 25
26 7.967" 6.545" 12.32 " 12.78 " 17.97 " 23.01 " 38.66 " 43.99 " 22.33 " 11.10 " 8.339" 4.855" 26
27 9.017" 6.333" 12.90 " 12.79 " 20.41 " 23.30 " 46.65 " 43.06 " 20.97 " 9.530" 8.153" 5.441" 27
28 7.998" 6.278" 12.89 " 12.29 " 24.53 " 23.13 " 48.52 " 41.61 " 21.95 " 9.097" 7.144" 5.648" 28
29 6.269" 12.62 " 12.50 " 20.01 " 22.39 " 59.79 " 39.51 " 20.34 " 8.582" 7.320" 5.695" 29
30 6.428" 12.43 " 12.60 " 19.19 " 21.77 " 68.93 " 37.85 " 19.46 " 8.406" 6.739" 5.989" 30
31 5.512" 11.93 " 20.35 " 74.53 " 36.61 " 7.583" 5.356" 31
Mean 8.107" 8.366" 8.720" 14.21 " 14.56 # 20.94 " 44.75 " 50.48 " 29.86 " 14.22 " 10.73 " 7.123"
Median 8.198" 8.296" 7.796" 13.35 " 13.17 # 19.97 " 43.27 " 47.87 " 31.68 " 14.14 " 9.207" 6.828"
Maximum 12.31 " 11.66 " 12.90 " 22.57 " 24.53 # 37.78 " 84.54 " 74.43 " 40.30 " 21.18 " 18.74 " 10.42 "
Minimum 5.512" 5.239" 5.707" 9.055" 11.19 # 16.53 " 20.08 " 36.61 " 19.46 " 7.583" 6.739" 4.646"
Total 251.3 " 234.2 " 270.3 " 426.3 " 451.4 # 628.2 "1387 "1564 " 896.0 " 440.8 " 321.8 " 220.8 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 19.43 # " ... Relative Uncertainty +/-10%
Ann. Median 12.94 # # ... Relative Uncertainty +/-15%
Annual Total 7093 #
Maximum Minimum
Daily 84.54 # 4.646#
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2011
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 4.809" 10.43 " 4.783" 5.329" 14.22 " 22.43 " 218.9 "2256 " 427.1 " 318.1 " 68.66 " 25.57 " 1
2 4.342" 8.912" 4.205" 6.687" 15.59 " 25.63 " 253.0 "1920 " 429.5 " 283.1 " 62.78 " 24.28 " 2
3 4.094" 9.890" 3.974" 6.150" 14.79 " 29.25 " 210.3 "1734 " 463.7 " 272.7 " 57.63 " 22.96 " 3
4 4.404" 10.45 " 4.007" 6.695" 13.78 " 24.54 " 164.0 "1361 " 435.3 " 330.7 " 53.84 " 21.65 " 4
5 6.222" 8.814" 4.250" 7.926" 13.71 " 21.26 " 131.6 " 980.5 " 386.0 " 310.2 " 53.69 " 20.71 " 5
6 7.990" 6.863" 3.889" 7.400" 13.31 " 18.48 " 108.7 " 702.5 " 337.1 " 275.9 " 55.32 " 20.02 " 6
7 7.762" 5.890" 3.871" 7.736" 12.86 " 17.12 " 93.01 " 534.4 " 293.3 " 244.6 " 66.70 " 20.85 " 7
8 8.173" 6.500" 3.551" 7.970" 12.22 " 16.37 " 80.00 " 439.6 " 258.5 " 215.7 " 94.95 " 20.75 " 8
9 7.533" 7.168" 6.024" 7.811" 11.57 " 15.79 " 70.25 " 402.5 " 231.1 " 204.7 " 149.5 " 20.56 " 9
10 9.794" 6.549" 8.573" 7.710" 10.94 " 17.43 " 62.56 " 364.3 " 207.8 " 239.7 " 161.5 " 19.85 " 10
11 9.457" 5.843" 6.732" 9.659" 10.72 " 17.33 " 58.15 " 315.1 " 187.8 " 217.6 " 137.0 " 18.09 " 11
12 6.925" 4.582" 6.403" 9.943" 10.44 " 15.04 " 56.98 " 274.1 " 173.0 " 188.4 " 110.1 " 17.28 " 12
13 5.997" 4.779" 7.278" 10.26 " 10.97 " 14.36 " 56.20 " 247.3 " 159.0 " 170.4 " 92.54 " 18.64 " 13
14 5.258" 4.896" 5.112" 10.27 " 10.57 " 14.46 " 59.52 " 369.3 " 143.6 " 156.6 " 81.29 " 21.04 " 14
15 5.075" 5.733" 5.845" 9.705" 10.28 " 15.03 " 62.02 " 668.3 " 134.8 " 148.2 " 71.95 " 22.35 " 15
16 4.414" 6.163" 5.446" 7.955" 10.32 " 14.21 " 99.94 " 872.3 " 147.4 " 134.9 " 64.05 " 21.27 " 16
17 4.367" 5.387" 6.227" 7.579" 10.48 " 13.80 " 149.8 " 872.2 " 261.4 " 122.4 " 59.55 " 18.34 " 17
18 5.101" 5.157" 6.618" 7.812" 10.70 " 14.14 " 133.2 " 665.3 " 528.0 " 115.1 " 56.02 " 19.14 " 18
19 4.829" 5.040" 6.694" 7.467" 11.07 " 14.45 " 111.2 " 508.6 " 973.3 " 109.9 " 53.74 " 18.97 " 19
20 4.496" 4.295" 5.678" 7.345" 15.05 " 15.20 " 99.02 " 416.1 " 973.8 " 105.8 " 52.90 " 18.46 " 20
21 4.790" 4.077" 5.409" 7.762" 31.18 " 14.61 " 118.4 " 404.0 " 734.1 " 99.00 " 50.92 " 16.04 " 21
22 4.444" 5.254" 5.504" 8.517" 21.58 " 14.36 " 147.1 "5241 & 994.7 " 90.36 " 47.94 " 14.60 " 22
23 4.263" 4.798" 5.679" 8.235" 17.71 " 14.78 " 146.6 "7322 & 978.7 " 84.92 " 44.71 " 14.69 " 23
24 7.154" 4.390" 5.798" 9.095" 16.27 " 18.49 " 137.1 "3234 " 692.6 " 84.62 " 38.04 " 13.40 " 24
25 9.450" 4.032" 6.055" 9.738" 14.79 " 43.69 " 129.8 "2188 " 527.4 " 92.33 " 28.31 " 11.47 " 25
26 12.89 " 4.577" 5.681" 10.45 " 13.74 " 44.70 " 167.7 "1423 " 469.2 " 91.19 " 25.27 " 14.51 " 26
27 10.88 " 4.269" 5.283" 12.77 " 13.23 " 45.80 " 165.6 "1027 " 473.0 " 89.95 " 28.23 " 22.74 " 27
28 9.736" 4.183" 4.854" 12.90 " 12.93 " 119.7 " 336.2 " 809.5 " 452.1 " 91.38 " 28.40 " 20.88 " 28
29 11.86 " 5.225" 13.89 " 13.09 " 142.6 " 750.9 " 662.9 " 410.5 " 106.6 " 28.59 " 18.28 " 29
30 11.24 " 5.078" 13.16 " 20.08 " 163.5 " 883.5 " 561.1 " 354.1 " 89.90 " 27.16 " 15.82 " 30
31 10.61 " 5.207" 31.39 " 1337 " 486.7 " 77.19 " 13.89 " 31
Mean 7.045" 6.033" 5.449" 8.865" 14.50 " 32.62 " 212.8 "1266 & 441.3 " 166.5 " 65.05 " 18.94 "
Median 6.222" 5.321" 5.446" 7.962" 13.23 " 17.23 " 131.6 " 668.3 & 418.8 " 134.9 " 55.67 " 19.14 "
Maximum 12.89 " 10.45 " 8.573" 13.89 " 31.39 " 163.5 "1337 "7322 & 994.7 " 330.7 " 161.5 " 25.57 "
Minimum 4.094" 4.032" 3.551" 5.329" 10.28 " 13.80 " 56.20 " 247.3 & 134.8 " 77.19 " 25.27 " 11.47 "
Total 218.3 " 168.9 " 168.9 " 265.9 " 449.7 " 978.7 " 6599 "39269 &13239 " 5163 " 1951 " 587.2 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 189.2 & " ... Relative Uncertainty +/-10%
Ann. Median 19.85 & & ... Relative Uncertainty +/-30%
Annual Total 69061 &
Maximum Minimum
Daily 7322 & 3.551&
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2012
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 12.65 " 7.696" 7.162" 8.061" 13.64 " 23.12 " 84.07 " 54.93 " 133.7 " 416.2 " 36.37 " 17.78 " 1
2 12.97 " 8.239" 6.630" 9.094" 13.21 " 20.21 " 79.32 " 63.33 " 140.5 " 332.4 " 35.07 " 20.64 " 2
3 13.46 " 10.11 " 7.100" 10.37 " 13.42 " 17.34 " 76.50 " 78.77 " 147.4 " 285.1 " 33.98 " 20.19 " 3
4 13.88 " 10.51 " 6.878" 11.36 " 13.74 " 16.60 " 73.74 " 108.2 " 482.2 " 286.8 " 35.40 " 19.58 " 4
5 12.18 " 12.64 " 6.753" 13.08 " 17.31 " 15.93 " 69.72 " 125.0 " 935.9 " 246.7 " 40.21 " 18.99 " 5
6 11.30 " 11.46 " 7.847" 12.98 " 20.21 " 15.57 " 67.34 " 115.7 " 836.9 " 212.8 " 44.13 " 18.13 " 6
7 12.27 " 11.68 " 7.618" 12.85 " 18.75 " 16.26 " 80.89 " 111.8 " 591.8 " 185.1 " 48.19 " 16.12 " 7
8 10.90 " 10.97 " 8.255" 12.65 " 19.76 " 17.17 " 100.8 " 120.0 " 439.8 " 164.3 " 47.94 " 17.17 " 8
9 12.17 " 10.75 " 9.716" 12.79 " 19.87 " 19.21 " 103.5 " 118.1 " 351.6 " 146.9 " 43.60 " 16.95 " 9
10 13.10 " 9.817" 9.139" 12.02 " 17.36 " 18.46 " 95.43 " 106.8 " 289.6 " 131.5 " 40.15 " 15.76 " 10
11 12.07 " 8.912" 7.610" 9.965" 17.19 " 28.41 " 107.4 " 95.95 " 250.3 " 118.0 " 38.31 " 14.72 " 11
12 9.805" 8.112" 6.810" 9.782" 16.34 " 43.19 " 124.6 " 103.3 " 222.1 " 105.3 " 36.79 " 28.75 " 12
13 9.178" 7.726" 7.500" 8.408" 15.92 " 46.28 " 123.0 " 298.5 " 197.2 " 96.10 " 35.06 " 137.1 " 13
14 8.503" 10.24 " 8.336" 8.456" 15.93 " 50.26 " 108.6 " 426.5 " 176.8 " 95.38 " 32.67 " 258.3 " 14
15 7.696" 10.48 " 9.192" 9.119" 15.38 " 70.27 " 100.2 " 422.0 " 162.7 " 108.8 " 30.74 " 173.4 " 15
16 7.866" 8.819" 8.245" 8.486" 15.05 " 69.44 " 97.59 " 395.1 " 143.6 " 117.0 " 27.73 " 123.2 " 16
17 8.418" 10.24 " 7.357" 9.073" 16.46 " 64.40 " 102.1 " 322.2 " 127.3 " 108.1 " 26.97 " 92.97 " 17
18 9.239" 10.50 " 6.896" 10.08 " 17.73 " 58.79 " 103.7 " 267.6 " 121.5 " 98.38 " 26.06 " 73.11 " 18
19 8.423" 9.322" 6.805" 10.42 " 17.32 " 72.13 " 97.68 " 227.8 " 134.7 " 90.12 " 24.57 " 59.18 " 19
20 7.533" 8.799" 7.361" 10.15 " 17.58 " 121.7 " 92.26 " 197.3 " 152.6 " 83.51 " 23.77 " 50.50 " 20
21 7.014" 9.357" 7.396" 10.25 " 17.28 " 173.2 " 86.46 " 194.1 " 147.1 " 77.16 " 23.09 " 43.47 " 21
22 6.218" 9.193" 8.799" 9.976" 16.24 " 162.4 " 81.12 " 267.3 " 220.8 " 71.73 " 20.68 " 37.24 " 22
23 5.452" 8.026" 9.100" 9.944" 15.27 " 141.7 " 76.48 " 295.5 " 367.5 " 66.57 " 18.25 " 32.60 " 23
24 7.836" 7.755" 8.314" 10.61 " 15.41 " 118.8 " 73.31 " 256.9 " 315.1 " 63.47 " 15.70 " 27.45 " 24
25 9.672" 7.370" 8.072" 10.56 " 14.69 " 104.7 " 70.82 " 222.4 " 263.9 " 60.99 " 12.77 " 21.96 " 25
26 7.868" 7.202" 7.652" 10.01 " 14.12 " 96.66 " 67.81 " 197.9 " 282.4 " 57.16 " 11.30 " 20.66 " 26
27 6.579" 7.308" 7.739" 9.678" 13.63 " 94.80 " 64.90 " 178.1 " 559.9 " 50.52 " 12.27 " 20.18 " 27
28 6.698" 7.424" 7.746" 10.75 " 13.42 " 97.95 " 62.14 " 163.3 " 889.7 " 45.65 " 12.56 " 18.40 " 28
29 5.974" 6.970" 9.388" 12.57 " 13.98 " 96.73 " 59.75 " 150.7 " 757.3 " 42.01 " 15.29 " 16.48 " 29
30 5.270" 8.541" 13.27 " 16.52 " 90.34 " 57.25 " 139.7 " 541.6 " 39.53 " 19.55 " 15.55 " 30
31 6.344" 8.293" 18.14 " 55.76 " 133.9 " 37.19 " 13.57 " 31
Mean 9.309" 9.230" 7.879" 10.56 " 16.16 " 66.08 " 85.31 " 192.2 " 346.1 " 130.3 " 28.97 " 47.10 "
Median 8.503" 9.193" 7.739" 10.20 " 16.24 " 61.59 " 81.12 " 163.3 " 257.1 " 98.38 " 29.24 " 20.64 "
Maximum 13.88 " 12.64 " 9.716" 13.27 " 20.21 " 173.2 " 124.6 " 426.5 " 935.9 " 416.2 " 48.19 " 258.3 "
Minimum 5.270" 6.970" 6.630" 8.061" 13.21 " 15.57 " 55.76 " 54.93 " 121.5 " 37.19 " 11.30 " 13.57 "
Total 288.5 " 267.6 " 244.2 " 316.8 " 501.0 " 1982 " 2644 " 5960 "10384 " 4041 " 869.3 " 1460 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 79.13 " " ... Relative Uncertainty +/-10%
Ann. Median 20.21 "
Annual Total 28961 "
Maximum Minimum
Daily 935.9 " 5.270"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2013
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 12.78 " 5.949" 5.283" 13.07 " 12.82 " 36.80 " 50.35 " 483.2 " 832.4 " 904.1 " 86.19 " 37.04 " 1
2 15.04 " 5.526" 6.792" 12.89 " 17.92 " 29.09 " 49.92 " 413.8 " 723.7 " 776.1 " 78.48 " 34.49 " 2
3 14.59 " 5.571" 6.940" 11.79 " 25.38 " 27.51 " 48.70 " 362.6 " 737.7 " 665.5 " 71.57 " 32.55 " 3
4 12.33 " 5.496" 7.540" 9.812" 18.85 " 27.01 " 47.05 " 320.2 "1704 " 558.8 " 67.31 " 31.01 " 4
5 12.23 " 6.155" 8.549" 7.980" 17.34 " 26.90 " 45.56 " 370.3 "1550 " 498.8 " 64.48 " 30.21 " 5
6 10.82 " 5.995" 7.833" 8.265" 16.54 " 25.71 " 43.44 "1361 "1002 " 493.7 " 61.86 " 29.50 " 6
7 13.15 " 6.030" 7.375" 7.379" 15.91 " 24.82 " 41.86 "3789 & 739.6 " 448.5 " 59.25 " 27.97 " 7
8 13.43 " 6.120" 7.423" 7.083" 19.83 " 24.40 " 40.66 "8628 & 598.9 " 401.9 " 58.32 " 26.34 " 8
9 11.87 " 5.843" 7.364" 8.498" 32.78 " 25.31 " 41.36 "4681 & 514.3 " 372.1 " 56.32 " 24.02 " 9
10 9.707" 5.499" 7.276" 9.467" 33.69 " 25.98 " 49.63 "2371 " 451.5 " 347.8 " 51.99 " 23.37 " 10
11 9.055" 5.097" 8.369" 9.503" 28.36 " 26.13 " 60.12 "1449 " 563.7 " 319.6 " 49.65 " 21.34 " 11
12 8.284" 5.387" 11.44 " 10.30 " 23.31 " 26.50 " 70.38 "1083 "1029 " 299.2 " 47.31 " 19.59 " 12
13 7.498" 5.635" 11.65 " 11.71 " 21.06 " 26.01 " 68.95 " 871.7 "1148 " 275.8 " 44.12 " 18.76 " 13
14 7.569" 6.026" 11.94 " 12.40 " 20.21 " 26.78 " 65.85 " 806.9 "1192 " 248.7 " 41.73 " 17.10 " 14
15 9.377" 6.738" 13.72 " 12.82 " 19.65 " 27.45 " 70.69 " 717.7 "1485 " 226.9 " 39.15 " 16.73 " 15
16 10.29 " 7.048" 14.75 " 13.07 " 19.56 " 26.64 " 118.9 " 739.8 "1565 " 211.9 " 37.64 " 17.78 " 16
17 10.55 " 6.761" 13.95 " 13.33 " 21.34 " 26.37 " 289.9 " 713.2 "1765 " 202.9 " 34.78 " 18.20 " 17
18 9.523" 6.140" 14.54 " 13.37 " 24.85 " 26.45 " 356.6 " 612.0 "1708 " 192.4 " 33.10 " 17.87 " 18
19 8.943" 7.361" 14.37 " 13.60 " 22.86 " 25.64 " 290.0 " 520.4 "1506 " 191.8 " 32.05 " 16.28 " 19
20 8.666" 7.014" 14.30 " 13.57 " 23.91 " 24.94 " 234.4 " 453.1 "1498 " 247.3 " 29.27 " 15.57 " 20
21 8.703" 6.584" 12.43 " 12.65 " 28.82 " 24.80 " 192.5 " 406.6 "1763 " 284.8 " 25.42 " 14.92 " 21
22 7.762" 6.461" 11.76 " 12.49 " 31.42 " 24.49 " 166.2 " 373.7 "2357 " 256.6 " 24.68 " 14.34 " 22
23 7.372" 6.163" 13.24 " 12.13 " 29.38 " 25.40 " 153.2 " 341.6 "4807 & 217.1 " 24.67 " 13.78 " 23
24 7.845" 6.101" 13.53 " 12.09 " 29.00 " 32.07 " 511.3 " 314.7 "6882 & 184.9 " 24.14 " 14.28 " 24
25 7.380" 7.373" 14.29 " 12.11 " 29.20 " 51.67 " 867.3 " 294.6 "4265 " 162.2 " 24.04 " 14.32 " 25
26 7.096" 8.704" 14.14 " 12.09 " 28.84 " 66.58 " 798.0 " 300.4 "2579 " 146.6 " 29.15 " 14.59 " 26
27 6.688" 6.574" 13.63 " 11.93 " 27.75 " 66.85 "1258 " 331.5 "1841 " 134.2 " 36.45 " 15.68 " 27
28 6.453" 5.567" 14.01 " 11.56 " 26.41 " 64.23 "1317 " 423.2 "1412 " 121.2 " 34.30 " 15.08 " 28
29 7.491" 13.09 " 11.30 " 25.34 " 58.44 " 876.4 " 429.7 "1102 " 112.5 " 33.14 " 13.97 " 29
30 7.544" 13.45 " 11.28 " 28.23 " 52.90 " 649.4 " 449.2 " 980.4 " 104.2 " 34.48 " 15.17 " 30
31 6.780" 13.52 " 29.42 " 556.8 " 608.1 " 94.74 " 15.42 " 31
Mean 9.577" 6.247" 11.24 " 11.32 " 24.19 " 33.46 " 304.2 "1129 &1677 & 313.0 " 44.50 " 20.56 "
Median 8.943" 6.110" 12.43 " 12.01 " 24.85 " 26.57 " 118.9 " 483.2 &1449 & 248.7 " 38.40 " 17.78 "
Maximum 15.04 " 8.704" 14.75 " 13.60 " 33.69 " 66.85 "1317 "8628 &6882 & 904.1 " 86.19 " 37.04 "
Minimum 6.453" 5.097" 5.283" 7.083" 12.82 " 24.40 " 40.66 " 294.6 & 451.5 & 94.74 " 24.04 " 13.78 "
Total 296.8 " 174.9 " 348.5 " 339.6 " 750.1 " 1004 " 9431 "35024 &50312 & 9704 " 1335 " 637.3 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 299.6 & " ... Relative Uncertainty +/-10%
Ann. Median 26.50 & & ... Relative Uncertainty +/-30%
Annual Total 109359 &
Maximum Minimum
Daily 8628 & 5.097&
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2014
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 13.84 " 9.481" 8.207" 12.54 " 12.46 " 141.7 " 192.6 " 511.1 "2582 " 351.9 " 56.64 " 28.50 " 1
2 13.66 " 8.431" 8.234" 12.37 " 13.47 " 129.9 " 276.3 " 445.9 "1618 " 307.0 " 54.83 " 27.11 " 2
3 14.27 " 8.216" 8.991" 11.74 " 13.37 " 119.8 " 788.0 " 393.3 "1183 " 267.6 " 53.48 " 26.58 " 3
4 13.41 " 8.870" 8.381" 11.44 " 12.73 " 111.0 " 818.1 " 351.8 " 918.9 " 239.1 " 51.70 " 24.58 " 4
5 12.50 " 8.484" 7.528" 11.95 " 13.33 " 100.7 " 619.2 " 320.4 " 757.1 " 230.7 " 47.65 " 25.30 " 5
6 13.80 " 9.211" 7.532" 12.12 " 13.74 " 92.63 " 756.0 " 294.4 " 666.6 " 268.3 " 37.43 " 25.18 " 6
7 14.16 " 8.645" 8.433" 12.35 " 14.98 " 85.21 "1921 " 279.0 " 776.1 " 283.8 " 40.75 " 25.40 " 7
8 14.55 " 8.395" 8.381" 11.32 " 18.99 " 79.52 "3543 " 289.1 "1085 " 254.6 " 47.14 " 24.43 " 8
9 13.48 " 7.442" 7.986" 10.41 " 29.04 " 79.25 "2570 " 283.0 "1792 " 230.4 " 43.68 " 23.39 " 9
10 13.35 " 7.638" 7.937" 10.45 " 27.32 " 86.14 "1371 " 255.5 "1809 " 208.7 " 39.60 " 21.29 " 10
11 12.40 " 8.519" 8.316" 9.930" 23.61 " 113.2 " 938.6 " 230.5 "1292 " 187.5 " 37.94 " 21.11 " 11
12 10.61 " 8.050" 7.278" 9.142" 21.14 " 138.0 " 717.2 " 208.7 " 969.2 " 168.2 " 41.23 " 21.55 " 12
13 9.915" 9.390" 7.443" 10.03 " 20.47 " 129.7 " 567.5 " 189.5 " 790.5 " 152.8 " 40.84 " 20.41 " 13
14 10.96 " 8.142" 8.805" 9.794" 19.70 " 114.8 " 571.4 " 173.8 " 645.1 " 138.0 " 39.36 " 17.52 " 14
15 12.06 " 7.659" 8.497" 10.58 " 19.08 " 102.6 " 866.7 " 161.1 " 548.0 " 126.4 " 37.98 " 17.25 " 15
16 12.40 " 7.311" 9.399" 9.858" 18.70 " 93.92 " 854.9 " 151.9 " 478.7 " 116.7 " 37.35 " 18.54 " 16
17 12.92 " 7.202" 9.906" 10.07 " 17.94 " 96.08 " 669.5 " 145.2 " 418.8 " 107.2 " 36.51 " 18.43 " 17
18 11.82 " 7.212" 10.15 " 10.47 " 16.74 " 219.7 " 528.8 " 277.1 " 376.6 " 98.23 " 36.31 " 18.02 " 18
19 10.56 " 6.935" 9.495" 9.609" 21.22 " 336.5 " 456.2 " 757.4 " 339.9 " 91.34 " 35.47 " 16.88 " 19
20 10.30 " 7.705" 8.408" 8.685" 48.65 " 317.4 " 413.5 " 854.2 " 314.1 " 88.15 " 34.56 " 16.12 " 20
21 10.64 " 8.549" 8.108" 8.512" 92.97 " 334.0 " 426.3 " 724.5 " 311.1 " 87.02 " 33.34 " 15.61 " 21
22 11.59 " 8.484" 7.563" 10.39 " 158.8 " 579.6 " 547.8 " 854.8 " 400.4 " 88.31 " 32.36 " 15.24 " 22
23 12.05 " 7.964" 7.755" 10.81 " 230.0 " 614.0 " 722.9 " 795.2 " 424.1 " 86.87 " 31.84 " 16.50 " 23
24 11.41 " 7.956" 7.234" 10.95 " 234.1 " 479.6 " 695.7 " 634.7 " 364.1 " 82.64 " 32.03 " 15.32 " 24
25 12.89 " 6.980" 8.406" 11.22 " 406.0 " 381.5 " 591.6 " 524.7 " 325.1 " 79.00 " 32.35 " 14.04 " 25
26 10.62 " 6.195" 8.329" 11.45 " 404.0 " 320.6 " 654.1 " 553.4 " 303.3 " 75.61 " 28.79 " 14.15 " 26
27 8.924" 6.154" 9.282" 11.50 " 301.1 " 282.1 "1112 " 719.1 " 312.8 " 73.18 " 28.39 " 13.97 " 27
28 8.809" 5.999" 9.803" 12.56 " 248.4 " 256.6 "1159 " 622.2 " 407.2 " 70.21 " 29.09 " 12.27 " 28
29 10.76 " 10.52 " 12.13 " 218.6 " 229.3 " 890.9 "5390 & 433.0 " 66.86 " 29.14 " 11.73 " 29
30 9.392" 10.61 " 12.07 " 188.5 " 208.0 " 714.2 "9416 & 403.5 " 62.82 " 29.00 " 11.79 " 30
31 9.351" 10.60 " 160.6 " 605.1 "4585 " 59.74 " 11.56 " 31
Mean 11.85 " 7.901" 8.630" 10.88 " 98.07 " 212.4 " 889.1 "1012 & 768.2 " 153.2 " 38.56 " 19.02 "
Median 12.05 " 8.007" 8.381" 10.88 " 21.22 " 134.0 " 714.2 " 393.3 & 513.3 " 116.7 " 37.39 " 18.02 "
Maximum 14.55 " 9.481" 10.61 " 12.56 " 406.0 " 614.0 "3543 "9416 &2582 " 351.9 " 56.64 " 28.50 "
Minimum 8.809" 5.999" 7.234" 8.512" 12.46 " 79.25 " 192.6 " 145.2 & 303.3 " 59.74 " 28.39 " 11.56 "
Total 367.5 " 221.2 " 267.5 " 326.5 " 3040 " 6374 "27564 "31395 &23048 " 4749 " 1156 " 589.8 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 271.5 & " ... Relative Uncertainty +/-10%
Ann. Median 36.31 & & ... Relative Uncertainty +/-30%
Annual Total 99103 &
Maximum Minimum
Daily 9416 & 5.999&
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2015
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 12.34 " 8.707" 9.659" 13.12 " 15.83 " 20.22 " 27.58 " 220.5 " 164.9 " 65.15 " 24.71 " 9.643" 1
2 12.57 " 8.614" 9.429" 13.27 " 15.46 " 21.62 " 27.03 " 228.7 " 171.5 " 61.66 " 26.44 " 10.02 " 2
3 12.60 " 10.19 " 10.12 " 13.17 " 15.76 " 23.79 " 27.28 " 176.8 " 157.0 " 57.75 " 27.17 " 10.63 " 3
4 11.59 " 11.30 " 9.735" 14.91 " 16.87 " 24.11 " 27.20 " 141.4 " 144.0 " 54.05 " 27.07 " 10.44 " 4
5 10.78 " 9.281" 9.390" 14.87 " 19.41 " 23.77 " 26.93 " 119.5 " 177.6 " 51.86 " 25.74 " 10.13 " 5
6 11.03 " 8.314" 10.33 " 14.06 " 27.66 " 23.84 " 26.41 " 103.7 " 235.6 " 50.24 " 24.68 " 10.96 " 6
7 10.00 " 8.124" 10.34 " 14.47 " 24.36 " 25.39 " 26.66 " 92.70 " 209.8 " 43.58 " 24.16 " 11.78 " 7
8 9.288" 8.704" 8.882" 16.77 " 20.47 " 25.94 " 26.69 " 89.15 " 185.1 " 32.57 " 22.76 " 11.10 " 8
9 9.428" 8.652" 8.992" 18.28 " 18.71 " 25.28 " 26.04 " 94.39 " 156.1 " 40.36 " 22.43 " 10.89 " 9
10 9.642" 10.46 " 9.800" 31.20 " 17.77 " 24.53 " 26.09 " 109.6 " 140.2 " 40.47 " 21.19 " 9.868" 10
11 9.114" 10.55 " 9.050" 40.68 " 17.45 " 24.02 " 25.67 " 123.9 " 175.1 " 38.79 " 18.45 " 9.687" 11
12 9.109" 9.255" 8.593" 31.80 " 17.36 " 23.63 " 25.26 " 126.5 " 319.6 " 36.87 " 16.87 " 9.885" 12
13 9.479" 8.892" 8.094" 30.13 " 20.10 " 22.89 " 25.12 " 119.2 " 448.1 " 35.21 " 15.86 " 9.464" 13
14 9.136" 9.315" 8.937" 28.21 " 19.70 " 22.52 " 24.70 " 110.4 " 427.0 " 34.38 " 15.08 " 8.726" 14
15 9.384" 9.117" 10.83 " 25.55 " 17.71 " 22.37 " 24.43 " 102.9 " 351.9 " 32.63 " 14.45 " 9.270" 15
16 8.328" 8.619" 12.67 " 23.59 " 18.63 " 22.42 " 24.12 " 98.31 " 285.6 " 31.54 " 13.64 " 10.16 " 16
17 8.253" 8.367" 12.64 " 22.04 " 23.63 " 22.79 " 24.02 " 93.46 " 247.9 " 30.61 " 13.35 " 10.42 " 17
18 7.978" 8.630" 13.87 " 20.78 " 35.09 " 24.44 " 23.39 " 128.9 " 216.1 " 29.84 " 13.67 " 9.226" 18
19 8.460" 8.874" 14.21 " 19.74 " 26.95 " 27.14 " 27.05 " 180.4 " 185.2 " 29.63 " 14.87 " 8.927" 19
20 12.10 " 8.850" 14.57 " 19.01 " 29.44 " 29.09 " 45.63 " 280.6 " 158.0 " 29.50 " 14.19 " 7.687" 20
21 13.05 " 9.609" 14.88 " 18.62 " 31.36 " 31.09 " 58.44 " 369.8 " 141.6 " 29.57 " 13.66 " 7.085" 21
22 11.75 " 9.187" 15.50 " 18.30 " 30.28 " 33.82 " 78.11 " 385.0 " 128.9 " 28.94 " 12.48 " 7.809" 22
23 11.34 " 8.484" 15.21 " 17.77 " 28.19 " 34.72 " 82.11 " 333.7 " 117.0 " 28.02 " 11.23 " 7.444" 23
24 10.57 " 8.127" 15.73 " 17.13 " 26.51 " 35.10 " 73.36 " 268.6 " 105.9 " 27.42 " 12.59 " 6.668" 24
25 12.49 " 8.897" 14.25 " 16.50 " 25.08 " 37.32 " 67.18 " 218.4 " 97.36 " 26.17 " 11.53 " 6.549" 25
26 15.90 " 10.54 " 12.94 " 16.16 " 24.02 " 36.86 " 60.62 " 189.0 " 90.25 " 25.59 " 11.85 " 7.194" 26
27 16.33 " 10.37 " 13.09 " 16.08 " 22.98 " 33.14 " 53.93 " 168.2 " 83.26 " 24.49 " 10.96 " 8.787" 27
28 14.11 " 10.10 " 15.19 " 16.01 " 22.55 " 31.06 " 49.52 " 149.3 " 77.05 " 23.00 " 10.52 " 7.948" 28
29 11.64 " 13.80 " 15.92 " 21.76 " 28.96 " 47.21 " 136.4 " 72.05 " 22.77 " 9.859" 6.690" 29
30 10.19 " 13.04 " 15.92 " 21.29 " 27.93 " 47.07 " 135.8 " 68.36 " 22.36 " 9.374" 6.568" 30
31 9.016" 14.22 " 20.79 " 128.1 " 144.1 " 23.71 " 7.264" 31
Mean 10.87 " 9.220" 11.87 " 19.80 " 22.36 " 26.99 " 41.39 " 169.0 " 184.6 " 35.77 " 17.03 " 8.999"
Median 10.57 " 8.895" 12.64 " 17.45 " 21.29 " 24.91 " 27.05 " 136.4 " 161.5 " 31.54 " 14.66 " 9.270"
Maximum 16.33 " 11.30 " 15.73 " 40.68 " 35.09 " 37.32 " 128.1 " 385.0 " 448.1 " 65.15 " 27.17 " 11.78 "
Minimum 7.978" 8.124" 8.094" 13.12 " 15.46 " 20.22 " 23.39 " 89.15 " 68.36 " 22.36 " 9.374" 6.549"
Total 337.0 " 258.1 " 368.0 " 594.1 " 693.3 " 809.9 "1283 "5240 "5539 "1108 " 510.9 " 278.9 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 46.63 " " ... Relative Uncertainty +/-10%
Ann. Median 21.76 "
Annual Total 17022 "
Maximum Minimum
Daily 448.1 " 6.549"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2016
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 6.795" 14.93 " 11.62 " 19.99 " 22.01 " 109.4 " 171.0 " 432.4 "1082 " 320.5 " 112.3 " 22.67 " 1
2 7.510" 15.86 " 11.71 " 18.53 " 20.97 " 96.90 " 150.7 " 413.7 " 982.5 " 352.4 " 107.0 " 20.56 " 2
3 9.409" 15.29 " 12.21 " 17.89 " 20.55 " 87.32 " 135.2 " 358.2 " 818.9 " 382.2 " 101.0 " 20.30 " 3
4 7.595" 15.22 " 11.65 " 16.80 " 20.37 " 84.61 " 124.8 " 386.5 " 699.1 " 370.3 " 95.66 " 20.55 " 4
5 7.382" 14.28 " 12.36 " 16.68 " 20.82 " 85.16 " 124.3 " 572.1 " 590.3 " 347.6 " 88.97 " 19.98 " 5
6 6.785" 11.60 " 11.81 " 16.35 " 28.93 " 87.64 " 119.0 " 590.0 " 507.5 " 326.9 " 82.14 " 19.27 " 6
7 5.919" 9.869" 11.37 " 16.01 " 28.50 " 94.02 " 118.1 " 724.4 " 535.2 " 452.1 " 76.44 " 20.72 " 7
8 5.548" 9.053" 11.92 " 15.96 " 27.47 " 102.2 " 216.4 "1367 " 780.7 " 863.2 " 71.46 " 21.45 " 8
9 5.578" 10.10 " 11.22 " 15.88 " 23.12 " 121.8 " 358.2 "1893 " 819.0 "1276 " 66.98 " 21.48 " 9
10 5.678" 9.881" 9.743" 16.35 " 21.97 " 142.0 " 438.2 "1344 " 659.3 "1172 " 64.45 " 19.91 " 10
11 5.913" 11.21 " 9.699" 16.63 " 20.80 " 189.0 " 607.5 " 953.7 " 575.1 " 841.1 " 62.73 " 19.34 " 11
12 7.228" 11.03 " 9.018" 20.38 " 19.45 " 209.2 " 624.8 " 951.3 " 507.5 " 628.1 " 59.21 " 18.97 " 12
13 6.879" 9.938" 9.019" 27.68 " 19.19 " 241.1 " 467.2 " 897.0 " 445.3 " 498.1 " 57.22 " 18.55 " 13
14 6.630" 8.749" 10.11 " 24.95 " 19.50 " 276.8 " 369.2 " 732.8 " 397.9 " 426.3 " 55.92 " 17.62 " 14
15 7.255" 8.038" 10.75 " 23.64 " 19.58 " 276.0 " 335.0 " 606.7 " 358.8 " 395.5 " 48.82 " 17.17 " 15
16 8.278" 9.119" 10.58 " 22.38 " 19.37 " 235.8 " 703.1 " 600.5 " 343.1 " 388.3 " 51.53 " 16.56 " 16
17 7.392" 9.625" 10.84 " 23.15 " 18.35 " 201.1 "1704 " 696.7 " 341.0 " 352.1 " 48.50 " 16.21 " 17
18 6.989" 9.890" 9.648" 25.37 " 23.11 " 175.0 "2352 "1172 " 322.8 " 314.2 " 42.31 " 14.77 " 18
19 9.950" 9.612" 9.075" 23.56 " 20.22 " 156.4 "2041 "1291 " 424.5 " 288.7 " 41.00 " 14.12 " 19
20 21.82 " 8.692" 8.420" 21.88 " 18.72 " 151.4 "1251 "1022 " 496.1 " 267.6 " 39.70 " 15.12 " 20
21 50.73 " 9.012" 8.935" 21.00 " 25.94 " 157.2 " 992.3 " 901.8 " 434.0 " 250.3 " 37.73 " 14.35 " 21
22 37.14 " 8.869" 11.04 " 20.56 " 48.08 " 157.0 "1107 " 836.8 " 394.3 " 225.4 " 33.95 " 14.13 " 22
23 30.75 " 10.39 " 12.23 " 20.34 " 48.43 " 148.8 " 965.3 " 740.3 " 414.9 " 202.2 " 26.46 " 14.55 " 23
24 27.81 " 11.39 " 13.51 " 20.24 " 89.48 " 139.5 " 759.7 " 618.4 " 406.7 " 184.5 " 28.86 " 13.41 " 24
25 23.69 " 11.93 " 13.85 " 21.02 " 122.4 " 133.3 " 607.9 " 523.9 " 374.4 " 169.2 " 29.23 " 11.49 " 25
26 21.20 " 12.02 " 17.29 " 22.78 " 164.7 " 131.8 " 508.0 " 468.3 " 348.1 " 155.2 " 29.05 " 11.73 " 26
27 19.71 " 11.53 " 23.94 " 22.47 " 148.1 " 130.5 " 446.0 " 941.0 " 323.5 " 141.7 " 27.63 " 14.84 " 27
28 17.24 " 10.63 " 28.38 " 21.94 " 142.3 " 131.8 " 399.5 "1807 " 345.5 " 132.4 " 26.26 " 15.06 " 28
29 15.63 " 10.55 " 23.27 " 21.36 " 140.4 " 161.3 " 362.2 "1641 " 368.6 " 125.0 " 24.83 " 14.81 " 29
30 14.75 " 23.07 " 21.71 " 145.3 " 185.3 " 350.3 "1143 " 336.2 " 120.4 " 22.86 " 13.68 " 30
31 14.10 " 22.00 " 127.5 " 374.7 " 967.7 " 117.4 " 13.65 " 31
Mean 13.84 " 10.97 " 13.23 " 20.45 " 52.77 " 153.3 " 622.1 " 890.3 " 514.4 " 389.9 " 55.34 " 17.00 "
Median 7.595" 10.39 " 11.62 " 20.78 " 23.11 " 145.4 " 438.2 " 836.8 " 429.3 " 326.9 " 50.17 " 16.56 "
Maximum 50.73 " 15.86 " 28.38 " 27.68 " 164.7 " 276.8 "2352 "1893 "1082 "1276 " 112.3 " 22.67 "
Minimum 5.548" 8.038" 8.420" 15.88 " 18.35 " 84.61 " 118.1 " 358.2 " 322.8 " 117.4 " 22.86 " 11.49 "
Total 429.3 " 318.3 " 410.3 " 613.5 " 1636 " 4600 "19287 "27600 "15434 "12089 " 1660 " 527.1 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 231.1 " " ... Relative Uncertainty +/-10%
Ann. Median 40.35 "
Annual Total 84607 "
Maximum Minimum
Daily 2352 " 5.548"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2017
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 12.45 " 7.984" 12.37 " 13.91 " 11.38 " 22.82 " 27.99 " 586.1 " 242.4 " 188.0 " 63.40 " 14.44 " 1
2 12.13 " 9.321" 12.54 " 12.51 " 10.53 " 22.81 " 29.51 " 534.0 " 233.1 " 170.4 " 58.11 " 14.74 " 2
3 12.61 " 10.93 " 12.48 " 11.86 " 10.85 " 23.92 " 28.36 " 425.9 " 223.0 " 153.7 " 53.88 " 13.49 " 3
4 11.39 " 10.68 " 12.21 " 11.67 " 11.51 " 21.58 " 28.69 " 385.2 " 208.1 " 137.6 " 50.11 " 13.62 " 4
5 10.55 " 9.244" 11.15 " 11.68 " 12.64 " 20.61 " 31.10 " 345.1 " 187.7 " 124.1 " 44.75 " 16.01 " 5
6 11.62 " 8.290" 12.24 " 11.52 " 13.44 " 19.99 " 33.96 " 298.5 " 174.7 " 115.2 " 42.85 " 17.17 " 6
7 13.44 " 9.632" 11.44 " 11.77 " 13.47 " 19.72 " 39.69 " 265.7 " 162.9 " 109.2 " 40.79 " 16.11 " 7
8 14.01 " 10.26 " 11.23 " 11.97 " 12.87 " 19.58 " 42.77 " 324.8 " 152.7 " 104.8 " 37.81 " 17.04 " 8
9 11.65 " 10.03 " 10.44 " 11.65 " 13.13 " 19.23 " 37.90 "1533 " 143.9 " 102.2 " 33.08 " 16.86 " 9
10 11.60 " 15.58 " 9.677" 11.18 " 12.99 " 16.43 " 37.05 "2200 " 135.3 " 99.14 " 25.13 " 16.00 " 10
11 11.22 " 20.45 " 9.381" 11.17 " 12.88 " 14.33 " 35.37 "1340 " 127.5 " 97.64 " 22.94 " 14.50 " 11
12 9.655" 26.22 " 9.283" 11.76 " 12.76 " 14.39 " 33.33 "1812 " 120.9 " 97.39 " 22.27 " 14.10 " 12
13 12.27 " 24.78 " 9.755" 11.69 " 12.92 " 15.83 " 32.88 "2854 " 114.1 " 94.36 " 24.11 " 12.87 " 13
14 21.89 " 24.45 " 13.24 " 11.79 " 13.36 " 16.34 " 31.67 "3203 " 107.1 " 89.27 " 26.16 " 12.71 " 14
15 12.03 " 22.70 " 12.27 " 11.57 " 15.57 " 17.52 " 31.93 "5440 & 100.0 " 82.37 " 25.67 " 12.70 " 15
16 9.374" 20.34 " 11.80 " 11.62 " 20.70 " 18.15 " 35.51 "3525 " 93.93 " 77.46 " 24.81 " 12.14 " 16
17 9.732" 18.48 " 12.85 " 11.37 " 18.85 " 18.08 " 36.54 "1840 " 88.61 " 83.86 " 24.70 " 12.87 " 17
18 10.02 " 16.68 " 13.80 " 11.79 " 23.71 " 18.31 " 35.70 "1378 " 83.96 " 129.9 " 24.37 " 16.34 " 18
19 9.476" 15.11 " 13.84 " 11.96 " 21.07 " 18.35 " 43.99 "1613 " 79.78 " 163.5 " 22.82 " 20.30 " 19
20 9.629" 13.67 " 13.28 " 11.74 " 19.34 " 19.87 " 62.97 "1641 " 78.40 " 140.4 " 22.01 " 18.84 " 20
21 10.76 " 11.99 " 12.99 " 11.55 " 21.51 " 30.00 " 85.39 "1265 " 94.38 " 116.7 " 20.96 " 18.04 " 21
22 9.886" 11.87 " 19.09 " 12.05 " 33.05 " 32.45 " 132.4 " 963.5 " 298.8 " 102.8 " 20.59 " 18.52 " 22
23 8.948" 13.30 " 22.26 " 12.12 " 30.26 " 35.59 " 196.7 " 769.5 " 519.1 " 92.08 " 21.15 " 17.19 " 23
24 8.960" 13.30 " 18.35 " 11.53 " 29.49 " 27.09 " 294.5 " 633.4 " 477.9 " 88.16 " 20.16 " 15.73 " 24
25 9.008" 12.17 " 16.59 " 12.11 " 28.24 " 25.35 " 274.4 " 534.3 " 410.1 " 87.61 " 19.00 " 14.83 " 25
26 8.993" 12.86 " 16.00 " 12.11 " 27.26 " 24.21 " 241.3 " 457.0 " 371.3 " 82.69 " 17.57 " 14.75 " 26
27 8.321" 11.85 " 16.08 " 11.88 " 26.22 " 23.43 " 279.2 " 398.7 " 312.9 " 78.41 " 17.30 " 14.91 " 27
28 10.07 " 11.13 " 16.10 " 12.20 " 25.41 " 31.81 " 374.4 " 347.5 " 263.4 " 76.26 " 16.57 " 13.40 " 28
29 9.331" 15.34 " 12.30 " 24.85 " 26.23 " 572.8 " 297.2 " 236.7 " 76.75 " 20.43 " 12.01 " 29
30 8.561" 14.93 " 12.07 " 24.03 " 25.71 " 530.5 " 270.9 " 212.6 " 72.96 " 16.71 " 10.98 " 30
31 8.445" 14.38 " 23.40 " 482.2 " 253.9 " 67.76 " 10.02 " 31
Mean 10.90 " 14.40 " 13.46 " 11.87 " 18.96 " 21.99 " 134.8 "1217 & 201.8 " 106.5 " 29.34 " 14.94 "
Median 10.07 " 12.52 " 12.85 " 11.78 " 18.85 " 20.30 " 37.90 " 633.4 & 168.8 " 97.64 " 24.24 " 14.75 "
Maximum 21.89 " 26.22 " 22.26 " 13.91 " 33.05 " 35.59 " 572.8 "5440 & 519.1 " 188.0 " 63.40 " 20.30 "
Minimum 8.321" 7.984" 9.283" 11.17 " 10.53 " 14.33 " 27.99 " 253.9 & 78.40 " 67.76 " 16.57 " 10.02 "
Total 338.1 " 403.3 " 417.4 " 356.2 " 587.8 " 659.8 " 4181 "37742 & 6056 " 3303 " 880.3 " 463.3 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 151.7 & " ... Relative Uncertainty +/-10%
Ann. Median 20.43 & & ... Relative Uncertainty +/-30%
Annual Total 55391 &
Maximum Minimum
Daily 5440 & 7.984&
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2018
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 10.30 " 8.687" 9.166" 12.65 " 18.16 " 22.70 " 119.4 " 743.1 "1019 " 124.1 " 48.49 " 22.43 " 1
2 10.92 " 8.709" 9.547" 13.10 " 17.08 " 21.06 " 187.6 " 965.5 " 782.6 " 119.8 " 46.23 " 22.66 " 2
3 10.84 " 9.327" 9.744" 13.15 " 16.59 " 20.14 " 859.2 "1128 " 638.7 " 109.9 " 44.09 " 22.49 " 3
4 10.95 " 8.463" 9.587" 12.88 " 15.81 " 19.75 "1044 "1412 " 574.0 " 102.8 " 41.84 " 22.23 " 4
5 9.914" 7.834" 9.116" 12.59 " 14.37 " 21.80 "1052 "1556 " 586.6 " 107.8 " 40.61 " 19.86 " 5
6 11.02 " 8.472" 9.506" 12.19 " 16.25 " 25.68 " 850.2 "1261 " 564.8 " 121.3 " 39.60 " 21.48 " 6
7 10.64 " 7.904" 9.534" 12.01 " 17.49 " 25.92 " 579.8 " 984.0 " 505.6 " 118.3 " 35.61 " 21.84 " 7
8 9.323" 9.349" 9.882" 11.92 " 16.41 " 23.80 " 431.8 " 873.9 " 482.7 " 109.3 " 28.05 " 21.13 " 8
9 10.50 " 8.093" 10.02 " 12.89 " 15.87 " 24.92 " 345.3 "1763 " 451.8 " 100.9 " 28.93 " 17.79 " 9
10 9.328" 8.301" 10.66 " 12.84 " 15.99 " 64.15 " 289.8 "3941 " 424.3 " 94.28 " 33.44 " 19.42 " 10
11 9.490" 8.734" 11.81 " 12.95 " 15.70 " 117.9 " 256.0 "2645 " 395.4 " 86.86 " 31.97 " 18.59 " 11
12 10.01 " 8.774" 10.17 " 13.78 " 20.57 " 155.9 " 217.3 "1537 " 367.3 " 82.97 " 31.89 " 15.98 " 12
13 10.10 " 9.685" 9.342" 14.51 " 17.10 " 129.1 " 209.4 "1073 " 337.4 " 87.35 " 31.58 " 15.68 " 13
14 9.498" 9.019" 9.454" 14.93 " 15.67 " 103.7 " 235.2 "1071 " 318.5 " 125.1 " 30.11 " 15.88 " 14
15 10.92 " 9.726" 9.912" 14.80 " 15.11 " 84.98 " 391.5 "1251 " 292.0 " 176.8 " 29.03 " 15.07 " 15
16 13.11 " 10.07 " 10.48 " 13.58 " 15.00 " 72.44 " 482.6 "1080 " 260.6 " 169.3 " 27.28 " 15.41 " 16
17 14.46 " 9.328" 11.19 " 13.27 " 14.62 " 64.01 " 487.1 " 894.4 " 242.5 " 148.0 " 25.27 " 16.39 " 17
18 17.01 " 9.003" 12.05 " 13.92 " 14.15 " 63.34 " 456.6 " 754.4 " 232.2 " 126.4 " 26.93 " 16.12 " 18
19 16.98 " 9.944" 11.50 " 14.22 " 13.94 " 73.33 " 410.8 " 643.1 " 219.7 " 110.2 " 28.36 " 15.27 " 19
20 16.76 " 9.963" 10.55 " 14.05 " 13.87 " 101.0 " 373.9 " 567.9 " 204.5 " 104.5 " 26.15 " 13.50 " 20
21 15.26 " 9.100" 9.159" 15.24 " 13.37 " 110.0 " 782.2 " 513.1 " 189.2 " 100.5 " 25.51 " 13.51 " 21
22 14.07 " 9.486" 8.934" 17.13 " 13.26 " 100.7 "3034 " 490.1 " 176.5 " 96.34 " 26.65 " 12.46 " 22
23 13.05 " 8.993" 10.61 " 21.84 " 13.29 " 88.62 "3229 " 454.0 " 163.6 " 93.94 " 23.89 " 11.26 " 23
24 11.93 " 9.145" 11.95 " 25.23 " 14.06 " 80.42 "1995 " 408.3 " 150.7 " 89.29 " 22.02 " 12.74 " 24
25 10.21 " 9.254" 13.13 " 22.68 " 25.05 " 74.99 "1325 " 357.8 " 140.3 " 82.24 " 23.09 " 14.01 " 25
26 10.05 " 10.59 " 13.42 " 21.68 " 33.61 " 73.42 "2278 " 321.7 " 131.0 " 75.72 " 26.20 " 17.39 " 26
27 10.38 " 10.44 " 14.08 " 21.29 " 29.59 " 80.59 "2185 " 314.9 " 122.6 " 70.02 " 26.50 " 18.69 " 27
28 9.765" 9.158" 14.47 " 20.74 " 27.73 " 132.9 "1360 " 601.3 " 114.3 " 64.92 " 24.77 " 16.63 " 28
29 8.480" 14.88 " 19.94 " 28.59 " 161.6 " 972.7 "1323 " 109.7 " 60.24 " 22.06 " 15.28 " 29
30 8.999" 15.06 " 19.07 " 27.07 " 138.3 " 903.1 "1820 " 114.1 " 56.27 " 21.18 " 13.43 " 30
31 9.522" 13.80 " 24.76 " 817.7 "1455 " 52.27 " 12.56 " 31
Mean 11.41 " 9.127" 11.05 " 15.70 " 18.39 " 75.92 " 908.6 "1103 " 343.8 " 102.2 " 30.58 " 17.00 "
Median 10.50 " 9.123" 10.48 " 13.98 " 15.99 " 74.21 " 579.8 " 984.0 " 276.3 " 100.9 " 28.21 " 16.12 "
Maximum 17.01 " 10.59 " 15.06 " 25.23 " 33.61 " 161.6 "3229 "3941 "1019 " 176.8 " 48.49 " 22.66 "
Minimum 8.480" 7.834" 8.934" 11.92 " 13.26 " 19.75 " 119.4 " 314.9 " 109.7 " 52.27 " 21.18 " 11.26 "
Total 353.8 " 255.5 " 342.7 " 471.2 " 570.2 " 2277 "28167 "34211 "10314 " 3168 " 917.4 " 527.2 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 223.5 " " ... Relative Uncertainty +/-10%
Ann. Median 23.09 "
Annual Total 81578 "
Maximum Minimum
Daily 3941 " 7.834"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2019
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 11.84 " 11.17 " 12.00 " 16.24 " 14.42 " 17.05 " 94.54 " 61.84 "1128 " 64.69 " 33.43 " 10.66 " 1
2 11.24 " 11.86 " 11.56 " 15.71 " 14.67 " 16.50 " 90.83 " 58.63 "1781 " 62.34 " 36.97 " 10.22 " 2
3 12.88 " 12.23 " 11.25 " 15.32 " 21.19 " 15.95 " 84.80 " 56.27 "2016 " 61.54 " 37.51 " 11.24 " 3
4 12.33 " 11.36 " 10.94 " 14.00 " 21.07 " 15.86 " 83.87 " 54.27 "1637 " 61.54 " 37.71 " 10.44 " 4
5 13.23 " 10.22 " 12.07 " 13.99 " 19.51 " 15.95 " 147.3 " 56.97 "1037 " 61.25 " 36.84 " 10.20 " 5
6 13.26 " 9.605" 11.65 " 14.53 " 19.61 " 16.43 " 180.1 " 60.54 " 709.3 " 66.90 " 35.07 " 9.626" 6
7 11.29 " 10.06 " 12.99 " 13.68 " 20.33 " 18.87 " 183.5 " 60.67 " 524.5 " 72.12 " 32.34 " 9.300" 7
8 12.24 " 9.494" 13.69 " 13.94 " 18.55 " 26.31 " 174.2 " 60.67 " 405.9 " 65.35 " 30.42 " 9.098" 8
9 11.87 " 9.320" 17.27 " 14.53 " 17.47 " 25.69 " 164.4 " 58.20 " 337.7 " 60.45 " 27.90 " 8.750" 9
10 11.38 " 8.564" 17.04 " 13.98 " 17.09 " 27.95 " 150.6 " 54.48 " 288.9 " 56.29 " 26.48 " 9.265" 10
11 10.23 " 7.923" 18.45 " 13.50 " 16.96 " 34.60 " 135.5 " 52.58 " 249.8 " 53.10 " 24.92 " 9.613" 11
12 9.184" 12.18 " 18.76 " 14.47 " 16.60 " 33.69 " 118.0 " 50.82 " 221.4 " 49.92 " 23.53 " 9.061" 12
13 10.24 " 13.03 " 18.09 " 15.23 " 16.51 " 31.01 " 107.8 " 49.28 " 202.7 " 47.90 " 22.43 " 9.064" 13
14 12.85 " 11.27 " 17.34 " 16.29 " 16.50 " 29.07 " 96.19 " 51.35 " 184.7 " 46.47 " 21.36 " 8.583" 14
15 12.58 " 10.75 " 16.35 " 17.31 " 16.38 " 27.47 " 87.68 " 65.29 " 170.7 " 45.03 " 20.99 " 8.186" 15
16 11.76 " 9.167" 15.35 " 16.94 " 17.16 " 25.45 " 81.31 " 88.36 " 158.3 " 43.71 " 19.25 " 8.007" 16
17 10.78 " 9.316" 14.84 " 16.72 " 17.31 " 23.67 " 74.57 " 120.8 " 142.8 " 41.98 " 18.59 " 8.332" 17
18 10.47 " 9.003" 13.61 " 17.84 " 17.89 " 22.60 " 68.10 " 195.1 " 128.4 " 36.80 " 16.98 " 8.606" 18
19 11.98 " 10.36 " 13.01 " 19.44 " 17.01 " 21.42 " 67.17 " 179.6 " 130.6 " 28.17 " 18.13 " 8.443" 19
20 11.47 " 10.75 " 12.13 " 19.76 " 17.31 " 20.87 " 81.73 " 147.0 " 145.3 " 31.68 " 17.06 " 8.241" 20
21 9.761" 9.591" 12.03 " 19.47 " 18.38 " 20.12 " 121.2 " 122.5 " 138.3 " 33.65 " 18.42 " 7.850" 21
22 11.41 " 9.137" 11.71 " 18.19 " 18.24 " 23.07 " 130.3 " 106.6 " 126.6 " 32.70 " 16.84 " 7.647" 22
23 13.84 " 9.053" 11.97 " 17.53 " 17.50 " 39.71 " 122.0 " 109.7 " 118.6 " 32.02 " 16.63 " 7.613" 23
24 14.51 " 9.631" 12.06 " 16.93 " 17.30 " 52.05 " 110.6 " 106.0 " 108.6 " 31.35 " 16.54 " 7.500" 24
25 13.72 " 15.39 " 13.24 " 16.52 " 16.89 " 59.36 " 97.66 " 109.3 " 99.65 " 29.82 " 14.94 " 7.117" 25
26 12.70 " 15.53 " 13.23 " 16.08 " 16.76 " 73.77 " 89.03 " 102.4 " 91.26 " 29.21 " 14.35 " 7.787" 26
27 11.97 " 13.17 " 14.07 " 15.82 " 16.63 " 76.30 " 82.68 " 92.91 " 84.34 " 28.24 " 12.89 " 9.207" 27
28 10.89 " 13.14 " 14.55 " 14.67 " 16.58 " 100.3 " 77.60 " 83.52 " 78.37 " 26.36 " 11.87 " 9.677" 28
29 12.07 " 13.44 " 14.23 " 23.45 " 103.4 " 72.82 " 79.76 " 73.52 " 26.51 " 11.16 " 8.769" 29
30 13.10 " 12.12 " 13.96 " 19.96 " 98.32 " 68.62 " 183.3 " 69.06 " 27.25 " 10.98 " 9.228" 30
31 11.28 " 14.20 " 17.72 " 65.11 " 690.8 " 31.62 " 9.765" 31
Mean 11.88 " 10.79 " 13.90 " 15.89 " 17.84 " 37.10 " 106.7 " 108.7 " 419.7 " 44.71 " 22.75 " 8.939"
Median 11.87 " 10.29 " 13.24 " 15.77 " 17.31 " 26.00 " 94.54 " 79.76 " 164.5 " 43.71 " 20.12 " 9.061"
Maximum 14.51 " 15.53 " 18.76 " 19.76 " 23.45 " 103.4 " 183.5 " 690.8 "2016 " 72.12 " 37.71 " 11.24 "
Minimum 9.184" 7.923" 10.94 " 13.50 " 14.42 " 15.86 " 65.11 " 49.28 " 69.06 " 26.36 " 10.98 " 7.117"
Total 368.4 " 302.3 " 431.1 " 476.9 " 553.0 " 1113 " 3310 " 3370 "12591 " 1386 " 682.6 " 277.1 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 68.11 " " ... Relative Uncertainty +/-10%
Ann. Median 18.09 "
Annual Total 24863 "
Maximum Minimum
Daily 2016 " 7.117"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2020
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 8.724" 5.480" 9.853" 9.561" 11.67 " 20.77 " 328.1 " 405.5 " 148.3 " 170.0 " 33.84 " 26.01 " 1
2 7.055" 5.965" 11.40 " 9.552" 11.12 " 19.08 " 278.8 " 356.5 " 214.2 " 168.1 " 36.04 " 24.53 " 2
3 7.432" 7.331" 10.64 " 8.650" 10.94 " 18.77 " 224.4 " 355.4 " 293.7 " 166.4 " 37.93 " 23.01 " 3
4 8.020" 8.177" 8.376" 8.052" 12.78 " 18.74 " 186.1 " 363.6 " 285.4 " 154.8 " 41.68 " 21.64 " 4
5 8.513" 8.883" 7.710" 9.463" 15.03 " 17.87 " 162.4 " 343.4 " 256.7 " 139.9 " 42.52 " 21.34 " 5
6 9.900" 6.116" 7.577" 10.11 " 19.27 " 17.05 " 192.6 " 318.0 " 288.1 " 126.7 " 40.02 " 20.94 " 6
7 9.850" 5.801" 8.392" 10.57 " 21.07 " 17.16 " 459.3 " 287.7 "1360 " 118.5 " 37.19 " 19.64 " 7
8 8.656" 6.831" 7.655" 10.77 " 17.35 " 17.03 " 593.6 " 265.7 "2925 " 192.1 " 34.08 " 19.04 " 8
9 7.248" 8.521" 6.741" 10.93 " 14.83 " 16.24 " 469.4 " 259.6 "1643 " 304.3 " 39.89 " 17.71 " 9
10 6.731" 7.250" 7.356" 10.67 " 13.86 " 15.75 " 363.7 " 502.2 "1402 " 243.0 " 58.56 " 15.55 " 10
11 6.665" 8.065" 6.810" 10.87 " 13.71 " 19.62 " 296.4 " 789.0 "1472 " 198.6 " 57.19 " 15.01 " 11
12 6.718" 7.080" 6.162" 10.46 " 13.29 " 30.13 " 254.8 " 748.1 "1083 " 165.7 " 61.78 " 14.05 " 12
13 6.813" 6.138" 5.931" 9.935" 12.35 " 25.44 " 247.8 " 589.4 " 774.6 " 141.2 " 59.48 " 13.37 " 13
14 6.659" 5.776" 6.478" 8.735" 11.95 " 22.71 " 422.9 " 477.0 " 581.6 " 123.1 " 56.93 " 13.92 " 14
15 7.332" 5.863" 9.346" 9.853" 11.95 " 20.99 " 641.2 " 412.6 " 487.9 " 111.2 " 58.08 " 13.31 " 15
16 6.813" 5.968" 11.41 " 10.31 " 12.00 " 19.99 " 691.1 " 453.6 " 423.7 " 103.4 " 60.71 " 13.29 " 16
17 6.100" 6.118" 12.64 " 9.882" 12.04 " 20.52 "1462 " 627.2 " 369.7 " 94.28 " 61.21 " 12.45 " 17
18 6.184" 5.717" 12.44 " 9.519" 12.06 " 24.00 "1857 " 603.3 " 323.4 " 86.03 " 57.66 " 11.89 " 18
19 6.310" 5.962" 12.32 " 10.59 " 11.70 " 27.36 "1168 " 508.7 " 289.8 " 79.23 " 52.10 " 12.20 " 19
20 6.202" 5.676" 12.32 " 10.66 " 17.17 " 25.20 " 791.8 " 424.2 " 305.1 " 72.40 " 47.81 " 11.62 " 20
21 6.916" 5.236" 13.10 " 12.24 " 17.98 " 23.58 " 585.1 " 368.1 " 311.7 " 66.62 " 44.46 " 10.35 " 21
22 7.056" 5.529" 12.75 " 11.91 " 14.60 " 26.12 " 467.1 " 329.0 " 283.3 " 61.42 " 41.63 " 10.02 " 22
23 6.489" 5.915" 11.42 " 11.50 " 13.36 " 44.38 " 428.4 " 297.0 " 271.1 " 56.03 " 39.43 " 9.894" 23
24 5.963" 5.900" 10.83 " 11.46 " 13.73 " 98.90 " 434.2 " 268.4 " 240.5 " 51.73 " 36.00 " 10.00 " 24
25 5.895" 8.452" 9.736" 11.20 " 15.23 " 139.8 " 378.8 " 247.2 " 213.1 " 48.36 " 32.07 " 9.702" 25
26 5.997" 9.939" 8.986" 11.41 " 19.12 " 112.7 " 337.2 " 227.5 " 186.0 " 44.39 " 29.37 " 10.84 " 26
27 6.095" 10.00 " 9.932" 15.83 " 18.07 " 104.0 " 343.1 " 206.4 " 173.5 " 42.52 " 27.30 " 10.88 " 27
28 6.266" 11.51 " 10.37 " 15.23 " 16.11 " 118.4 " 636.5 " 189.3 " 175.3 " 37.44 " 27.67 " 10.08 " 28
29 6.428" 11.07 " 10.81 " 13.49 " 16.86 " 193.0 " 801.6 " 174.4 " 174.9 " 30.56 " 26.40 " 10.40 " 29
30 5.926" 10.27 " 12.33 " 26.08 " 315.1 " 623.1 " 160.7 " 177.2 " 30.48 " 26.97 " 8.820" 30
31 5.432" 9.880" 23.93 " 484.7 " 147.9 " 31.21 " 8.037" 31
Mean 6.980" 7.113" 9.668" 10.86 " 15.20 " 53.02 " 535.9 " 377.6 " 571.2 " 111.6 " 43.53 " 14.50 "
Median 6.718" 6.118" 9.880" 10.62 " 13.86 " 23.14 " 434.2 " 355.4 " 291.7 " 103.4 " 40.83 " 13.29 "
Maximum 9.900" 11.51 " 13.10 " 15.83 " 26.08 " 315.1 "1857 " 789.0 "2925 " 304.3 " 61.78 " 26.01 "
Minimum 5.432" 5.236" 5.931" 8.052" 10.94 " 15.75 " 162.4 " 147.9 " 148.3 " 30.48 " 26.40 " 8.037"
Total 216.3 " 206.2 " 299.7 " 325.8 " 471.3 " 1590 "16613 "11708 "17137 " 3460 " 1306 " 449.6 "
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 146.9 " " ... Relative Uncertainty +/-10%
Ann. Median 19.63 "
Annual Total 53786 "
Maximum Minimum
Daily 2925 " 5.236"
Department of Water and Environmental Regulation HYDAY V139 Output 20/04/2021
Site 611004 Preston River - Boyanup Bridge Year 2021
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 7.421" 10.13 " 11.29 " 13.87 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 1
2 6.950" 9.848" 14.69 " 12.83 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 2
3 7.253" 10.30 " 14.28 " 13.01 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 3
4 7.538" 10.25 " 19.88 " 13.98 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 4
5 8.167" 10.40 " 26.24 " 15.01 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 5
6 7.557" 10.13 " 22.77 " 16.38 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 6
7 7.306" 18.26 " 21.54 " 16.09 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 7
8 7.009" 29.66 " 21.80 " 16.62 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 8
9 6.805" 22.40 " 20.79 " 15.83 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 9
10 6.948" 19.21 " 19.17 " 15.77 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 10
11 7.326" 20.26 " 17.74 " 19.26 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 11
12 7.769" 20.84 " 16.94 " 30.86 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 12
13 6.934" 20.02 " 16.42 " 35.17 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 13
14 6.507" 18.36 " 15.65 " 30.71 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 14
15 6.037" 17.20 " 17.11 " 30.97 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 15
16 6.426" 13.64 " 15.57 " 28.08 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 16
17 8.173" 11.98 " 16.38 " 24.45 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 17
18 6.775" 15.13 " 14.93 " 22.43 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 18
19 7.263" 14.42 " 14.26 " 21.16 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 19
20 7.978" 13.69 " 14.11 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 20
21 8.650" 14.83 " 14.54 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 21
22 7.558" 14.17 " 13.60 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 22
23 6.775" 12.23 " 13.95 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 23
24 7.182" 12.19 " 15.50 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 24
25 8.987" 10.95 " 15.41 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 25
26 10.91 " 9.811" 14.39 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 26
27 10.42 " 9.084" 14.34 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 27
28 9.896" 9.836" 15.11 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 28
29 9.126" 14.88 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 29
30 10.92 " 13.78 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 30
31 9.756" 13.71 " [ ] [ ] [ ] [ ] [ ] 31
Mean 7.882" 14.62 " 16.48 " 20.66 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
Median 7.421" 13.67 " 15.41 " 16.62 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
Maximum 10.92 " 29.66 " 26.24 " 35.17 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
Minimum 6.037" 9.084" 11.29 " 12.83 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
Total 244.3 " 409.3 " 510.9 " 392.5 " [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
Missing Days 0 0 0 11 31 30 31 31 30 31 30 31
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 14.28 " " ... Relative Uncertainty +/-10%
Ann. Median 13.98 " [ ... Not Available
Annual Total 1557 "
Missing Days 256
Maximum Minimum
Daily 35.17 " 6.037"