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Department of Water and Environmental Regulation HYANN V88 Output 20/06/2025 Site 510254 Northern Arthur River - Lake Toolibin Inflow Variable 1.00 Rainfall - Total - to agency standards in Millimetres Year Annual Days Rank Total Missing (Millimetres) ----------------------------------------------- 1977 6.946 354 49 1978 316.2 27 1979 219.5 45 1980 393.9 10 1981 350.6 21 1982 401.6 7 1983 485.9 2 1984 355.8 19 1985 273.4 38 1986 294.1 33 1987 294.7 32 1988 363.6 16 1989 296.9 30 1990 450.2 5 1991 356.1 18 1992 397.6 9 1993 418.4 6 1994 248.9 41 1995 321.1 26 1996 363.3 17 1997 373.9 15 1998 389.5 11 1999 374.2 14 2000 325.2 25 2001 292.6 35 2002 226.8 44 2003 495.1 1 2004 304.5 28 2005 342.5 23 2006 340.9 24 2007 295.2 31 2008 385.1 13 2009 303.9 29 2010 209.3 46 2011 389.0 12 2012 291.9 36 2013 293.0 34 2014 351.8 20 2015 283.2 37 2016 399.8 8 2017 479.0 4 2018 268.4 39 2019 236.0 43 2020 245.2 42 2021 480.0 3 2022 345.0 22 2023 255.0 20 40 2024 158.0 47 2025 90.20 196 48 Total 15830 570 Minimum 6.946 Maximum 495.1 Mean 323.1 Median 325.2