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Department of Water and Environmental Regulation HYANN V87 Output 25/09/2023 Site 607002 Lefroy Brook - Channybearup Variable 151.00 Stream Discharge Volume in Megalitres Year Annual Days Rank Total Missing (Megalitres) ----------------------------------------------- 1970 17990 140 10 1971 18460 9 1972 10460 27 1973 23370 2 1974 18520 8 1975 13330 21 1976 10330 28 1977 9833 30 1978 19770 6 1979 12140 23 1980 14060 19 1981 22660 4 1982 10020 29 1983 15670 16 1984 19340 7 1985 12090 24 1986 8309 34 1987 3397 41 1988 23080 3 1989 11280 26 1990 16510 15 1991 17020 13 1992 17180 12 1993 14900 18 1994 8372 33 1995 11990 25 1996 24800 1 1997 17540 11 1998 14010 20 1999 6.7 281 45 2000 0.0 366 54 2001 0.0 365 46 2002 0.0 365 47 2003 0.0 365 48 2004 0.0 366 49 2005 0.0 365 50 2006 0.0 365 51 2007 0.0 365 52 2008 0.0 366 53 2009 16830 85 14 2010 1827 44 2011 5117 38 2012 2937 42 2013 12330 22 2014 9614 31 2015 4122 39 2016 21050 5 2017 7616 35 2018 9186 32 2019 4065 40 2020 6218 37 2021 15560 17 2022 7274 36 2023 2202 166 43 Total 562400 3960 Minimum 6.7 Maximum 24800 Mean 12500 Median 12140