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Department of Water and Environmental Regulation HYANN V88 Output 13/08/2026
Site 611004 Preston River - Boyanup Bridge
Variable 151.00 Stream Discharge Volume in Megalitres
Year Annual Days Rank
Total Missing
(Megalitres)
-----------------------------------------------
1980 78410 121 21
1981 100100 13
1982 59750 31
1983 196900 1
1984 70930 24
1985 108100 10
1986 38720 38
1987 33030 39
1988 160700 3
1989 52890 34
1990 119800 7
1991 148600 4
1992 131900 6
1993 82040 18
1994 68000 28
1995 84210 17
1996 191800 2
1997 81020 20
1998 66820 30
1999 146200 5
2000 110900 8
2001 14270 45
2002 67780 29
2003 71670 23
2004 68350 27
2005 104100 11
2006 28090 41
2007 77280 22
2008 40610 37
2009 104000 12
2010 7094 47
2011 69060 25
2012 28960 40
2013 109400 9
2014 99100 14
2015 17020 44
2016 84610 15
2017 55390 32
2018 81580 19
2019 24860 42
2020 53790 33
2021 84400 16
2022 46160 36
2023 20950 43
2024 51890 35
2025 68680 26
2026 8727 142 46
Total 3619000 263
Minimum 7094
Maximum 196900
Mean 77000
Median 70930