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Department of Water and Environmental Regulation HYANN V87 Output 23/12/2023 Site 609010 Northern Arthur River - Lake Toolibin Inflow Variable 151.00 Stream Discharge Volume in Megalitres Year Annual Days Rank Total Missing (Megalitres) ----------------------------------------------- 1978 0.0 221 43 1979 0.0 41 1980 0.1 37 1981 2163 6 1982 1340 10 1983 15710 1 1984 0.5 35 1985 0.3 36 1986 0.6 34 1987 0.1 38 1988 503.1 13 1989 3.3 30 1990 4586 4 1991 40.6 25 1992 2756 5 1993 1401 9 1994 285.4 18 1995 0.9 33 1996 1802 7 1997 2.9 31 1998 307.2 17 1999 533.4 12 2000 446.7 15 2001 24.3 28 2002 1.3 32 2003 333.9 16 2004 0.0 46 2005 90.4 23 2006 730.7 11 2007 0.0 44 2008 282.8 19 2009 266.4 20 2010 0.0 40 2011 26.3 27 2012 473.5 14 2013 0.0 39 2014 21.4 29 2015 0.0 42 2016 29.8 26 2017 7166 3 2018 112.7 21 2019 57.6 24 2020 0.0 45 2021 9076 2 2022 1797 8 2023 111.6 33 22 Total 52490 254 Minimum 0.0 Maximum 15710 Mean 1141 Median 74.0