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Department of Water and Environmental Regulation HYANN V88 Output 13/11/2025
Site 615062 Avon River - Northam Weir
Variable 151.00 Stream Discharge Volume in Megalitres
Year Annual Days Rank
Total Missing
(Megalitres)
-----------------------------------------------
1977 20560 44
1978 172500 10
1979 60120 30
1980 21780 43
1981 269600 5
1982 51460 35
1983 506900 1
1984 111500 16
1985 42740 37
1986 146200 13
1987 54490 33
1988 122000 15
1989 110700 17
1990 168100 11
1991 103500 18
1992 245100 6
1993 79940 24
1994 71230 26
1995 152700 12
1996 320100 3
1997 68500 28
1998 96110 20
1999 207300 9
2000 320000 4
2001 30850 41
2002 17780 45
2003 79630 25
2004 29210 42
2005 131100 14
2006 42490 38
2007 55910 32
2008 83550 23
2009 94840 21
2010 12220 47
2011 58360 31
2012 12020 48
2013 46900 36
2014 37230 39
2015 14850 46
2016 68750 27
2017 244700 7
2018 92940 22
2019 33480 40
2020 10280 49
2021 336600 2
2022 242100 8
2023 96130 19
2024 52120 34
2025 66860 50 29
Total 5514000 50
Minimum 10280
Maximum 506900
Mean 112500
Median 79630