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Department of Water and Environmental Regulation HYMONTH V128 Output 04/02/2023
Site 607002 Lefroy Brook - Channybearup Site 607002
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
1970 [ ] [ ] [ ] [ ] [99.33]4488 $4201 $3721 $2579 $2636 $ 196.1 " 67.50" [2249 ] [17989] 140 1970
1971 31.96" 80.93" 67.91" 251.7 " 764.9 "1478 "1838 "2594 "4626 $5293 $1195 " 234.2 " 1538 $ 18456$ 0 1971
1972 27.83" 7.87" 5.84" 165.6 " 251.0 " 600.4 "2022 "4487 $2082 " 705.8 " 95.52" 13.11" 872.1 $ 10465$ 0 1972
1973 7.10" 4.24" 97.17" 174.4 " 444.1 "2366 $6565 $6617 $4130 "1861 "1030 " 78.29" 1948 $ 23375$ 0 1973
1974 31.20" 23.86$ 15.31$ 154.7 $ 689.8 "1610 "7219 $6069 $1177 " 774.9 " 665.4 " 92.34" 1544 $ 18522$ 0 1974
1975 34.43" 50.67" 83.86" 187.0 " 418.7 "1657 $4387 $3464 $1902 " 790.3 " 281.0 " 71.53" 1111 $ 13327$ 0 1975
1976 88.62" 48.74! 84.20" 370.8 " 375.0 "1326 $1971 "3353 "1209 " 680.6 " 685.7 " 142.1 " 861.2 !10334 ! 0 1976
1977 43.94" 54.26" 91.38" 15.42" 328.4 " 936.8 "1512 "3728 $1042 "1605 " 433.8 " 41.14" 819.4 $ 9833 $ 0 1977
1978 24.36" 5.02" 4.38" 54.41" 532.4 "2276 $8040 $2558 "3421 "2542 $ 183.2 " 132.3 " 1648 $19773 $ 0 1978
1979 27.85" 10.63" 131.4 " 295.6 " 313.6 " 921.3 "3190 "2512 "1726 "2303 " 578.5 " 130.3 " 1012 "12140 " 0 1979
1980 15.40" 7.02" 4.95" 156.2 " 286.7 " 683.2 "3499 "4383 "2402 "2015 " 431.1 " 177.3 " 1172 "14061 " 0 1980
1981 29.11" 7.32" 6.26" 121.0 " 371.6 "2507 "5436 "8626 "3080 "1497 " 642.9 " 334.7 " 1888 " 22658" 0 1981
1982 129.7 " 62.08" 90.01" 378.6 " 342.4 "1434 "3684 "2141 "1026 " 480.2 " 199.2 " 49.07" 834.7 " 10016" 0 1982
1983 5.62" 6.50" 2.35" 59.00" 245.5 " 591.9 "2924 "3670 "7131 " 718.8 " 256.2 " 54.98" 1306 " 15666" 0 1983
1984 37.63" 1.81" 22.48" 73.76" 882.2 "2675 "2876 "4854 "5987 " 617.1 "1054 " 261.3 " 1612 " 19342" 0 1984
1985 93.57" 59.79" 52.90" 240.9 " 283.4 "1028 "1524 "5248 "2344 " 706.8 " 416.2 " 89.97" 1007 " 12088" 0 1985
1986 18.88" 10.64" 114.4 " 121.7 " 376.5 " 382.7 "1797 "2960 "1510 " 892.9 " 75.12" 48.61" 692.4 " 8309 " 0 1986
1987 33.17" 2.51" 2.37" 127.9 " 127.1 " 265.0 "1024 "1309 " 297.2 " 92.88" 91.80" 23.68" 283.0 " 3397 " 0 1987
1988 4.43" 1.27" 2.26" 2.31" 603.1 "6359 "4098 "4303 "3640 "3391 " 616.8 " 56.28" 1923 "23076 " 0 1988
1989 61.22" 48.12" 71.61" 374.6 " 399.1 " 453.0 "1531 "2214 "1873 "3741 " 467.3 " 50.90" 940.4 "11285 " 0 1989
1990 29.39" 21.36" 96.52" 355.1 " 433.8 "1090 "5252 "4601 "2134 "1596 " 758.1 " 138.1 " 1376 "16507 " 0 1990
1991 35.62" 18.81" 17.12" 164.2 " 529.4 "2045 "3645 "5538 "4125 " 415.9 " 333.9 " 148.6 " 1418 "17016 " 0 1991
1992 5.26" 2.18" 1.32" 19.78" 545.9 "1343 "3556 "4388 "4908 "1087 "1034 " 291.9 " 1432 "17182 " 0 1992
1993 7.55" 2.51" 3.06" 62.65" 609.7 " 489.4 "2760 "4790 "4064 "1728 " 354.9 " 29.39" 1242 "14901 " 0 1993
1994 4.46" 1.46" 0.00" 0.84" 292.6 "1959 "2643 "1734 "1207 " 481.4 " 31.40" 16.99" 697.7 " 8372 " 0 1994
1995 2.97" 0.00" 0.00" 0.00" 41.19" 731.8 "4400 "3198 "2526 " 513.0 " 485.3 " 93.60" 999.3 "11991 " 0 1995
1996 24.46" 3.86" 1.02" 3.25" 71.52"1174 "7123 "6302 "5945 "3198 " 442.7 " 506.4 " 2066 " 24795" 0 1996
1997 17.54" 5.51" 107.2 " 210.5 " 485.4 "2902 "3411 "5451 "3895 " 827.7 " 163.9 " 59.75" 1461 " 17537" 0 1997
1998 2.77" 0.00" 1.62" 79.13" 266.9 " 985.7 "1638 "3101 "5518 "2057 " 273.3 " 81.95" 1167 " 14005" 0 1998
1999 4.72" 1.95" [0.00] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [2.23] [7] 281 1999
2000 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 2000
2001 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 2001
2002 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 2002
2003 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 2003
2004 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 2004
------------------ 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%
[ ... Not Available
Department of Water and Environmental Regulation HYMONTH V128 Output 04/02/2023
Site 607002 Lefroy Brook - Channybearup Site 607002
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
2005 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 2005
2006 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 2006
2007 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 2007
2008 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 2008
2009 [ ] [ ] [0.20] 18.72" 98.44" 560.7 "5522 &3360 "4703 "1985 " 497.4 " 81.77" [1683 ][16827 ] 85 2009
2010 1.18" 2.06" 3.75" 7.61" 13.27" 196.7 " 505.5 " 470.9 " 442.2 " 55.02" 43.48" 85.67" 152.3 " 1827 " 0 2010
2011 4.62" 3.21" 0.00" 0.14" 0.73" 2.11" 336.2 "2446 "1177 " 709.6 " 387.7 " 49.18# 426.5 # 5117 # 0 2011
2012 2.71# 2.97" 0.57" 48.07" 17.98" 132.1 " 213.8 " 734.1 "1317 " 419.4 " 39.93" 7.92" 244.7 # 2937 # 0 2012
2013 0.44" 0.00" 0.00" 1.72" 174.7 " 172.2 "1676 "4044 "4634 "1447 " 122.4 " 61.42" 1028 "12334 " 0 2013
2014 0.80" 0.00" 0.00" 0.03" 17.48" 528.5 "3757 "1939 "2576 " 720.8 " 44.98" 30.04" 801.2 " 9614 " 0 2014
2015 1.14" 0.00" 0.00" 0.04" 26.13" 507.6 " 783.3 "1883 " 867.6 " 44.90" 3.97" 4.25" 343.5 " 4122 " 0 2015
2016 116.4 " 29.67" 5.75" 363.9 " 795.4 " 499.3 "6476 &5691 "4103 "2716 " 231.9 " 19.49" 1754 &21047 & 0 2016
2017 3.66" 1.47" 1.52" 0.45" 101.0 " 175.8 "1079 "3949 "1323 " 908.6 " 69.68" 2.92" 634.7 " 7616 " 0 2017
2018 0.48" 0.01" 0.00" 0.00# 0.34# 9.10"1879 "5178 "1729 " 358.0 " 27.95" 5.20" 765.5 # 9186 # 0 2018
2019 1.67" 0.24" 1.30" 2.86" 13.98" 110.3 "1335 " 828.8 "1554 " 116.7 " 97.50" 1.49" 338.7 " 4065 " 0 2019
2020 0.37" 0.00" 0.00" 0.64" 45.26" 42.08"1229 "1899 "2338 " 477.2 " 172.9 " 14.10" 518.1 " 6218 " 0 2020
2021 0.26" 2.19" 284.9 " 13.43" 272.5 " 581.7 "4187 "5367 "2233 "2044 " 559.3 " 11.39" 1296 "15556 " 0 2021
2022 1.77" 0.04" 0.00" 2.64" 145.6 " 505.7 " 809.7 "4053 " 798.5 " 419.6 " 477.8 " 59.56" 606.1 " 7274 " 0 2022
2023 74.90" [0.05] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [37.48] [74.96] 332 2023
Mean 25.38# [13.79] [34.35] 111.5 $[305.4 ]1181 $3106 &3715 $2728 $1341 $ 377.9 " 91.88# [1061 ][12450 ] Mean
Med. 15.40# [3.21] [3.75] 60.82$[286.7 ] 731.8 $2876 &3721 $2338 $ 827.7 $ 333.9 " 59.75# Med.
Max 129.7 # [80.93][284.9 ] 378.6 $[882.2 ]6359 $8040 &8626 $7131 $5293 $1195 " 506.4 # [2249 ][24795 ] Max
Min 0.26# [0.00] [0.00] 0.00$ [0.34] 2.11$ 213.8 & 470.9 $ 297.2 $ 44.90$ 3.97" 1.49# [2.23] [6.68] Min
Total 1091# [593] [1477] 4681$ [13134] 50782$ 133556& 159753$ 117302$ 57670$ 16250" 3951# [47750] [560240] 4126 Total
OK 100% 98% 98% 100% 98% 100% 100% 100% 100% 100% 100% 100% 100% 100% OK
Cnt 43 43 43 42 43 43 43 43 43 43 43 43 45 45 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%
[ ... Not Available