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Department of Water and Environmental Regulation HYMONTH V128 Output 13/11/2025
Site 616189 Ellen Brook - Almeria Pde Upper Swan Site 616189
VarFrom 10.00 Stage - SL in Metres
VarTo 151.00 Total Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Mean Annual Missing
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Monthly Total Days Yr
1965 [ ] [ ] [ ] [0.0] 154.2& 5189 &18011 &16035 & 5264 "11132 & 1367 & 203.6& [6373 ] [57357] 113 1965
1966 13.9& 0.0& 0.0& 0.1& 126.2& 1454 &12263 & 5456 & 4067 & 871.0& 129.0& 3.3" 2032 & 24384& 0 1966
1967 0.0" 0.0" 0.0" 77.9" 4315 "17128 &21732 &14651 & 4983 & 1216 & 133.7& 31.3& 5356 & 64268& 0 1967
1968 0.3& 0.0& 0.0& 66.9& 200.3& 6539 &16271 &13977 &13191 & 2893 & 389.8& 4.7& 4461 & 53532& 0 1968
1969 1.3& 0.3& 0.0& 36.1& 326.8& 2553 & 4580 & 2148 & 381.5& 64.6& 30.3& 0.0& 843.5& 10122& 0 1969
1970 0.0& 0.0& 0.0& 9.0& [157.3][5313 ] 7321 & 4768 & 2959 & 1483 & 44.1& [0.0] [1838 ] [22054] 34 1970
1971 [0.3] 1.6& 2.6& 2.8& 121.7& 915.5& 1692 &[3192 ] 5322 & 4413 & 378.1& 6.8& [1337 ] [16048] 7 1971
1972 2.4& [0.4] 5.1& 20.1& 18.0& 620.9& 2854 &11139 & 2166 & 473.5& 23.4& [0.0] [1444 ] [17323] 38 1972
1973 [0.0] 0.0& 0.0& 6.3& 24.5& 2054 &12295 &12514 &13240 & 1340 & 310.2& 10.2& [3483 ] [41793] 19 1973
1974 0.3& 0.0& 0.0& [0.0][2248 ] 6287 &29194 &22157 & 2146 & 1238 & 1201 B 459.5B [5411 ] [64930] 52 1974
1975 467.9B 422.7B 143.4B 0.0& 2.8! 544.4! 6021 ! 8084 ! 3347 ! 1325 & 505.3B 316.4B 1765 B 21179B 0 1975
1976 798.6B 804.0& 599.7B 901.7B 307.5" 872.2" 1472 " 5814 ! 3989 & 1002 " 833.5& 24.7" 1452 B 17419 B 0 1976
1977 0.0" 0.0" 0.0" 0.0" 48.3" 553.1" 1048 ! 4547 ! 591.1" 581.4" 86.4" 0.0" 621.3! 7455 ! 0 1977
1978 0.0" 0.0" 0.0" 0.0" 222.9" 5261 &21817 & 2770 " 4670 " 1584 & 39.9& 0.1& 3030 & 36365 & 0 1978
1979 0.0 0.0 0.0 0.0 54.7& 2252 & 4589 7325 " 1398 377.0& 190.3& 0.7& 1349 & 16187 & 0 1979
1980 0.0 0.0 0.0 0.0 243.1& 2071 9628 " 7443 " 3058 795.8 120.7& 6.3& 1947 & 23366 & 0 1980
1981 0.0 0.0 0.0 0.0 2414 &15294 "15275 "21063 " 2888 1171 186.1& 25.2& 4860 & 58316& 0 1981
1982 46.7& 0.0& 0.0& 0.0& 14.5& 4061 & 9387 "10039 " 4447 1116 & 53.9& 0.2& 2430 & 29166& 0 1982
1983 0.0 0.0 0.0 0.0 0.0 4067 !13482 & 8974 12161 " 590.8& 645.2& 8.7& 3327 ! 39929! 0 1983
1984 0.0 0.0 0.0 0.0 2248 & 2459 5257 10423 " 9351 & 759.1& 489.4& 5.9& 2583 & 30992& 0 1984
1985 0.0 0.0 0.0 0.0 0.0 176.5& 4791 7806 1838 499.4& 54.6& 0.0 1264 & 15165& 0 1985
1986 0.0 18.2& 0.0& 0.0 405.6& 6464 "18564 &19089 " 3514 1626 166.0& 3.7& 4154 & 49849& 0 1986
1987 0.0 0.0 0.0 0.0 604.1& 4821 14122 &10193 " 2030 601.1 192.9& 47.8& 2718 & 32613& 0 1987
1988 0.0 0.0 0.0 0.0 380.1& 4897 12435 &10251 " 3467 3759 ! 480.9& 35.8& 2976 ! 35706! 0 1988
1989 0.0 0.0 0.0 0.0 262.1& 742.2 5711 4359 2023 2205 152.8& 0.0" 1288 & 15456& 0 1989
1990 741.7! 262.5! 439.9& 386.6& 687.3" 1793 "10929 " 9961 " 2697 1209 240.0& 0.3& 2446 ! 29348! 0 1990
1991 0.0 0.0 0.0 0.0 35.2&12499 &24006 &10991 " 7187 1377 881.3& 111.3& 4757 & 57089& 0 1991
1992 9.0& 651.6& 28.4& 30.3& 519.6& 4840 8285 20228 "12378 & 1472 724.0& 102.6& 4106 & 49267& 0 1992
1993 0.0 0.0 0.0 0.0 1341 2520 6364 "15360 " 9320 " 2065 395.3& 6.3& 3114 & 37371& 0 1993
1994 0.0 0.0 0.0 0.0 302.8& 3535 9139 7158 " 1928 493.1& 7.7& 0.0 1880 & 22563& 0 1994
1995 0.0 0.0 0.0 0.0 859.9& 5920 "22376 & 9521 " 4018 1703 382.0& 29.5& 3734 & 44810& 0 1995
1996 0.0 0.0 0.0 0.0 0.0 3207 &16700 "14541 "10301 " 2298 751.9& 82.4& 3990 & 47882& 0 1996
1997 0.0 0.0 0.0 0.0 158.8& 1368 2297 6754 " 5745 " 728.3 98.7& 1.4& 1429 & 17151& 0 1997
1998 0.0 0.0 0.0 0.0 145.2& 2079 4830 9438 ! 3825 ! 1354 162.9& 1.6& 1820 ! 21836! 0 1998
1999 118.7& 0.2& 0.0 0.0 585.2& 4117 7772 7460 8380 " 8706 " 211.6& 0.3& 3113 & 37351& 0 1999
------------------ Notes -------------------
All recorded data is continuous and reliable
except where the following tags are used...
! ... Not reviewed / Quality not known
" ... Relative Uncertainty +/-10%
# ... Relative Uncertainty +/-15%
$ ... Relative Uncertainty +/-20%
& ... Relative Uncertainty +/-30%
B ... Outside measured range
[ ... Not Available
Department of Water and Environmental Regulation HYMONTH V128 Output 13/11/2025
Site 616189 Ellen Brook - Almeria Pde Upper Swan Site 616189
VarFrom 10.00 Stage - SL in Metres
VarTo 151.00 Total Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Mean Annual Missing
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Monthly Total Days Yr
2000 119.0& 25.4& 0.0 0.0 131.2& 1190 &10656 " 9506 " 5441 " 610.6 134.3& 6.6& 2318 & 27820& 0 2000
2001 0.0 0.0 0.0 0.0 106.3& 424.3 2027 5338 3043 2164 178.4& 1.0& 1107 & 13283& 0 2001
2002 0.0# 0.0 0.0 0.0 42.0& 1842 & 5712 3764 3420 577.9 146.7& 0.0 1292 & 15504& 0 2002
2003 0.0 0.0 0.0 0.0 109.4& 1625 & 7507 11975 " 4388 2107 132.2& 2.0& 2320 & 27845& 0 2003
2004 0.0 0.0 0.0 0.0 0.0 1117 & 2137 5290 2694 761.1 191.2& 2.5& 1016 & 12193& 0 2004
2005 0.0 0.0 0.0 0.0 576.7&11082 " 4116 7729 " 5141 2268 " 347.9& 37.6& 2608 & 31299& 0 2005
2006 11.02& 0.00 0.00 0.00 0.00 126.6 & 643.6 3817 2439 380.1 & 49.93& 0.00 622.3 & 7467 & 0 2006
2007 0.00 0.00 0.00 0.00 0.00 103.7 &2674 5715 4275 788.6 64.80& 0.00 1135 &13621 & 0 2007
2008 0.00 0.00 0.00 0.00 132.5 &1104 6114 $3247 $1187 840.8 & 275.5 & 24.28& 1077 &12925 & 0 2008
2009 0.00 0.00 0.00 0.00 0.00 209.0 &6152 6743 5160 720.4 150.4 & 0.71& 1595 &19136 & 0 2009
2010 0.00 0.00 0.00 0.00 0.00 0.00 842.1 & 837.6 588.5 & 12.38& 0.00 0.00 190.0 & 2281 & 0 2010
2011 0.0 0.0 0.0 0.0$ 0.0$ 23.2& 1689 $ 4230 2035 774.2 285.1& 203.8& 770.1& 9241 & 0 2011
2012 0.0 0.0 0.0 0.0 0.0 594.0& 455.5" 1021 839.7 142.6& 50.0& 0.0 258.6& 3103 & 0 2012
2013 0.0 0.0 0.0 0.0 0.0 0.0 730.1& 3875 12421 " 1239 45.1& 0.0 1526 & 18310 & 0 2013
2014 0.0 0.0 0.0 0.0 36.8& 1276 & 3820 1962 2093 510.0& 19.5& 1.7& 810.0& 9720 & 0 2014
2015 0.0 0.0 0.0 0.0 0.0 19.6& 661.5& 2225 " 1092 " 62.6& 0.0 0.0 338.3& 4060 & 0 2015
2016 0.0 0.0 0.0 12.6& 649.1& 1311 5123 7134 2917 1157 43.0& 0.0 1529 & 18345 & 0 2016
2017 0.0 470.2& 1.7& 0.0 0.0 50.5& 2433 &10783 " 3152 882.8 51.6& 0.0 1485 & 17825 & 0 2017
2018 0.0 0.0 0.0 0.0 0.0 686.2& 4320 15825 " 4178 1015 108.2& 0.0& 2178 & 26131 & 0 2018
2019 0.0 0.0 0.0& 0.0 0.0 1193 & 3748 2390 2257 194.1& 51.8& 0.0 819.5& 9834 & 0 2019
2020 0.0 0.0 0.0 0.0 0.0 230.9& 849.5 2756 856.2 178.0& 274.7& 0.0& 428.8& 5145 & 0 2020
2021 0.0 0.0 0.0 0.0 0.0 416.0&11282 8831 " 1705 2148 411.4& 1.0& 2066 & 24794 & 0 2021
2022 0.0 0.0 0.0 0.0 0.0 740.2& 2020 16060 " 3279 545.9 128.3& 0.5& 1898 & 22774 & 0 2022
2023 0.0 0.0 0.0 0.0 0.0 260.2& 1451 845.4 860.2 81.1& 0.0 0.0 291.5& 3498 & 0 2023
2024 0.0 0.0 0.0 0.0 0.0 92.8& 1788 & 5421 1809 755.5& 9.0& 0.0 822.9& 9875 & 0 2024
2025 0.0 0.0 0.0 0.0 0.0 111.1& 2284 &14268 " 6957 " 735.9 [71.3] [ ] [2221 ][24428 ] 50 2025
Mean [38.85] [44.29] 20.35B [25.41][349.5 ][2792 ]7766 ![8479 ]4303 !1413 ![250.5 ] [30.20] [2155 ][25510 ] Mean
Med. [0.00] [0.00] 0.00B [0.00][106.3 ][1368 ]5711 ![7460 ]3347 ! 882.8 ![150.4 ] [1.24] Med.
Max [798.6] [804.0] 599.7B [901.7][4315 ][17128 ]29194 ![22157 ]13240 !11132 ![1367 ] [459.5] [6373 ][64930 ] Max
Min [0.0] [0.0] 0.0B [0.0] [0.0] [0.0] 455.5! [837.6] 381.5! 12.4! [0.0] [0.0] [190.0] [2281 ] Min
Total [2331] [2657] 1221B [1550] [21318][170292] 473748![517217] 262499! 86171! [15280] [1812] [131453][1556097] 313 Total
OK 99% 99% 100% 97% 98% 99% 100% 100% 100% 100% 99% 98% 99% 99% OK
Cnt 60 60 60 61 61 61 61 61 61 61 61 60 61 61 Cnt
------------------ Notes -------------------
All recorded data is continuous and reliable
except where the following tags are used...
! ... Not reviewed / Quality not known
" ... Relative Uncertainty +/-10%
# ... Relative Uncertainty +/-15%
$ ... Relative Uncertainty +/-20%
& ... Relative Uncertainty +/-30%
B ... Outside measured range
[ ... Not Available