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Department of Water and Environmental Regulation HYANN V87 Output 05/02/2023 Site 710003 De Grey River - Coolenar Pool Variable 151.00 Stream Discharge Volume in Megalitres Year Annual Days Rank Total Missing (Megalitres) ----------------------------------------------- 1974 0.0 310 50 1975 652000 28 1976 1027000 22 1977 1575000 15 1978 1781000 12 1979 481000 31 1980 0.0 359 46 1981 0.0 365 47 1982 0.0 316 48 1983 2414000 8 1984 771900 5 26 1985 449300 33 1986 0.0 49 1987 1328000 18 1988 3264000 3 1989 298800 35 1990 7307 45 1991 74580 39 1992 13490 44 1993 766100 27 1994 54970 41 1995 1613000 14 1996 1172000 19 1997 1791000 11 1998 1098000 21 1999 4016000 2 2000 6969000 1 2001 411200 34 2002 2122000 9 2003 481100 30 2004 3244000 4 2005 21430 42 2006 1509000 17 2007 1723000 13 2008 229600 36 2009 1115000 20 2010 18570 43 2011 576900 29 2012 1812000 10 2013 2698000 6 2014 1510000 16 2015 66850 40 2016 198000 38 2017 2614000 7 2018 865300 24 2019 887500 23 2020 3152000 5 2021 837500 25 2022 477700 32 2023 204400 331 37 Total 58390000 1686 Minimum 0.0 Maximum 6969000 Mean 1192000 Median 837500