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Department of Water and Environmental Regulation HYMONTH V128 Output 17/01/2026
Site 510254 Northern Arthur River - Lake Toolibin Inflow Site 510254
Variable 1.00 Total Rainfall - Total - to agency standards in Millimetres
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
1977 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [6.946] [6.946] [6.946] 354 1977
1978 1.654$ 31.00 0.000 18.00 28.02 57.50 79.72 23.42 31.14 11.20 5.200 29.36 $ 26.35 $ 316.2 $ 0 1978
1979 0.531$ 8.144$ 15.74 $ 9.020$ 26.84 $ 42.84 $ 31.08 30.91 34.33 " 7.640" 8.608# 3.827# 18.29 $ 219.5 $ 0 1979
1980 2.914# 59.24 # 0.642# 25.48 # 37.64 # 42.56 # 28.77 # 30.10 # 15.21 # 79.40 1.600 70.37 32.83 # 393.9 # 0 1980
1981 0.590 43.74 2.800 19.61 69.99 # 56.50 # 57.60 36.80 19.39 10.01 31.55 2.050 29.22 # 350.6 # 0 1981
1982 117.5 2.290 15.42 0.440 16.76 45.75 40.44 " 60.97 " 43.43 14.20 36.40 " 7.970" 33.46 " 401.6 " 0 1982
1983 0.270 17.94 0.920 0.870 26.40 156.5 84.67 55.40 54.76 7.170" 46.44 34.56 40.49 " 485.9 " 0 1983
1984 0.000 3.150 28.60 48.20 " 71.69 33.91 33.74 21.76 59.52 5.740 36.40 13.09 29.65 " 355.8 " 0 1984
1985 2.120 5.090 3.180 24.41 19.60 45.40 73.86 46.08 22.19 17.50 13.38 0.620 22.79 273.4 0 1985
1986 0.770 56.05 7.062$ 0.816$ 36.31 $ 79.36 $ 45.01 $ 22.92 $ 9.996$ 5.858$ 28.65 1.300 24.51 $ 294.1 $ 0 1986
1987 0.240 0.000 4.210 46.56 25.99 31.58 69.37 39.12 27.25 18.43 15.82 16.08 24.55 294.7 0 1987
1988 0.000 0.000 31.20 33.10 56.32 $ 68.98 $ 52.60 48.60 45.80 7.800 8.600 10.60 30.30 $ 363.6 $ 0 1988
1989 14.20 20.00 0.200 36.62 68.54 34.33 41.57 30.20 16.68 # 34.52 # 0.000 0.000 24.74 # 296.9 # 0 1989
1990 114.6 11.54 12.57 30.28 102.0 23.40 84.03 20.81 26.81 19.80 3.400 1.000 37.52 450.2 0 1990
1991 1.400 35.40 1.800 37.20 12.40 ! 45.32 77.46 50.65 34.10 18.62 30.58 11.17 29.68 ! 356.1 ! 0 1991
1992 3.136 28.03 36.06 29.59 ! 28.01 ! 88.55 ! 32.80 77.00 31.40 7.200 31.80 4.000 33.13 ! 397.6 ! 0 1992
1993 0.400 69.20 43.40 7.600 70.40 53.60 47.80 37.60 39.80 12.20 31.20 5.200 34.87 418.4 0 1993
1994 1.800 0.200 0.000 0.000 63.93 41.35 39.19 54.20 23.40 15.40 9.000 0.400 20.74 248.9 0 1994
1995 5.800 18.20 " 2.600 10.00 57.20 43.20 68.68 16.42 29.39 41.78 15.76 12.08 26.76 " 321.1 " 0 1995
1996 0.000 0.000 2.000 6.800 40.04 90.68 104.8 26.72 43.86 17.53 28.87 2.019 30.28 363.3 0 1996
1997 0.000 28.47 76.50 16.92 32.34 24.85 25.64 43.90 58.24 ! 61.36 ! 5.736 0.000 31.16 ! 373.9 ! 0 1997
1998 0.000 0.000 29.87 55.58 31.25 73.38 37.11 56.17 35.91 5.617 35.56 29.06 32.46 389.5 0 1998
1999 14.22 0.000 18.29 12.19 57.32 58.87 63.72 49.84 44.51 30.69 1.354 23.23 31.19 374.2 0 1999
2000 118.8 0.000 10.65 11.20 8.400 39.60 68.77 44.60 15.40 0.400 7.400 0.000 27.10 325.2 0 2000
2001 0.754 8.687 0.000 0.756 34.02 8.129 71.29 66.11 " 28.76 10.42 48.44 15.25 24.38 " 292.6 " 0 2001
2002 3.474 9.843 1.351 35.90 12.16 34.85 32.91 24.97 14.13 19.36 36.88 0.971 18.90 226.8 0 2002
2003 0.793 65.05 26.41 29.90 " 58.66 " 84.00 " 48.54 " 75.25 44.33 52.58 3.908 5.667 41.26 " 495.1 " 0 2003
2004 3.322 34.39 4.299 14.46 26.07 45.14 33.66 57.22 17.23 36.19 20.58 11.96 25.38 304.5 0 2004
2005 0.000 4.082# 37.89 # 37.07 # 79.36 # 54.26 # 14.98 40.48 45.51 14.77 11.11 2.964 28.54 # 342.5 # 0 2005
2006 144.0 23.71 2.766 28.06 6.440 18.63 35.12 39.19 10.28 8.925 16.35 7.403 28.41 340.9 0 2006
2007 13.25 0.195 2.532 36.43 16.95 30.68 90.04 34.32 25.83 21.21 0.000 23.76 24.60 295.2 0 2007
2008 0.000 12.37 14.68 69.75 57.58 19.82 83.87 6.033 39.30 54.40 17.04 10.24 32.09 385.1 0 2008
2009 21.06 6.376 35.36 1.154 20.59 63.68 54.64 40.79 32.52 10.58 17.12 0.000 25.32 303.9 0 2009
2010 0.577 5.772 77.35 3.467 29.66 25.81 30.04 15.60 2.696" 8.154" 6.563" 3.580" 17.44 " 209.3 " 0 2010
2011 19.76 " 1.932 0.000 15.15 35.73 50.30 51.66 31.07 28.83 37.09 33.42 84.04 32.42 " 389.0 " 0 2011
------------------ 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%
[ ... Not Available
Department of Water and Environmental Regulation HYMONTH V128 Output 17/01/2026
Site 510254 Northern Arthur River - Lake Toolibin Inflow Site 510254
Variable 1.00 Total Rainfall - Total - to agency standards in Millimetres
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
2012 8.887 6.955 4.448 2.321 29.59 52.41 13.54 20.69 42.54 5.775 29.07 75.65 24.32 291.9 0 2012
2013 6.163 6.549 37.56 5.070 45.44 9.750 44.66 27.74 80.05 24.72 2.355 2.942 24.42 293.0 0 2013
2014 7.259 0.000 17.66 17.27 83.58 28.43 " 50.80 51.40 42.20 33.20 17.80 2.200 29.32 " 351.8 " 0 2014
2015 5.400 1.200 22.80 39.20 19.20 35.00 52.80 33.60 8.800 15.00 28.60 21.60 23.60 283.2 0 2015
2016 84.60 7.000 46.20 46.80 38.40 28.80 25.40 49.00 28.00 7.200 15.40 23.00 33.32 399.8 0 2016
2017 4.000 159.2 32.00 4.600 28.00 51.20 62.60 46.60 34.60 21.00 22.40 12.80 39.92 479.0 0 2017
2018 42.40 2.600 5.800 10.60 19.80 45.80 51.00 48.60 6.600 25.40 8.800 1.000 22.37 268.4 0 2018
2019 0.400 0.000 11.00 10.40 9.400 64.00 40.40 78.60 7.000 12.20 2.200 0.400 19.67 236.0 0 2019
2020 0.000 36.60 30.00 5.600 26.20 25.20 26.20 40.60 26.40 3.200 25.20 0.000 20.43 245.2 0 2020
2021 1.800 26.00 52.40 43.00 98.00 24.60 126.2 53.00 22.40 30.20 1.000 1.400 40.00 480.0 0 2021
2022 0.000 3.400 30.40 22.00 38.00 55.80 53.00 67.00 25.80 41.60 8.000 0.000 28.75 345.0 0 2022
2023 4.200 0.000 45.80 37.40 20.60 39.40 26.20 [30.00 ] 23.40 1.600 18.60 7.800 [21.25 ][255.0 ] 20 2023
2024 16.00 2.200 12.60 0.000 16.80 1.400 3.400 33.19 " 28.21 " 16.49 " 27.13 " 9.332" 13.90 " 166.8 " 0 2024
2025 6.511" 1.736" 29.08 " 29.95 " 12.15 " 28.00 " 66.41 " 87.66 " 39.34 " 31.04 " 27.40 4.400 30.31 " 363.7 " 0 2025
2026 [0.000] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [0.000] [0.000] 350 2026
Mean [16.24 ] 17.99 $ 19.25 $ 21.39 ! 38.54 ! 45.90 ! 51.62 $[42.14 ] 30.57 ! 20.67 ! 18.31 #[12.52 ] [26.99 ][322.3 ] Mean
Med. [2.120] 6.752$ 13.64 $ 17.63 ! 30.46 ! 43.02 ! 49.67 $[40.54 ] 28.79 ! 15.95 ! 16.70 # [5.667] Med.
Max [144.0 ]159.2 $ 77.35 $ 69.75 !102.0 !156.5 !126.2 $[87.66 ] 80.05 ! 79.40 ! 48.44 #[84.04 ] [41.26 ][495.1 ] Max
Min [0.000] 0.000$ 0.000$ 0.000! 6.440! 1.400! 3.400$ [6.033] 2.696! 0.400! 0.000# [0.000] [0.000] [0.000] Min
Total[795.6 ] 863.5 $ 924.1 $1027 !1850 !2203 !2478 $[2023 ]1467 ! 992.4 ! 878.7 #[613.3 ] [1349 ][16115 ] 724 Total
OK 99% 100% 100% 100% 100% 100% 100% 99% 100% 100% 100% 99% 100% 100% OK
Cnt 49 48 48 48 48 48 48 48 48 48 48 49 50 50 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%
[ ... Not Available