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Department of Water and Environmental Regulation HYANN V83 Output 13/04/2021 Site 612002 Collie River - Mungalup Tower Variable 151.00 Stream Discharge Volume in Megalitres Year Annual Days Rank Total Missing (Megalitres) ----------------------------------------------- 1969 54590 87 36 1970 150300 8 1971 126600 9 1972 45370 41 1973 160600 6 1974 375700 1 1975 94870 18 1976 35270 44 1977 60150 32 1978 92880 20 1979 23610 48 1980 64590 28 1981 124300 10 1982 115000 14 1983 286200 3 1984 97480 17 1985 117100 12 1986 44830 42 1987 29350 45 1988 217900 4 1989 82720 25 1990 118800 11 1991 169300 5 1992 152100 7 1993 89070 22 1994 57080 35 1995 102200 15 1996 315500 2 1997 50140 37 1998 82390 26 1999 94120 19 2000 90270 21 2001 12660 51 2002 46610 39 2003 64420 29 2004 58610 33 2005 115200 13 2006 26540 47 2007 75640 27 2008 46030 40 2009 100800 16 2010 7176 52 2011 85660 23 2012 39060 43 2013 85580 24 2014 61890 31 2015 14610 50 2016 57390 34 2017 49300 38 2018 63540 30 2019 20680 49 2020 28590 46 2021 567.7 263 53 Total 4781000 350 Minimum 567.7 Maximum 375700 Mean 90210 Median 75640