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Department of Water and Environmental Regulation HYANN V87 Output 30/01/2025 Site 603004 Hay River - Sunny Glen Variable 151.00 Stream Discharge Volume in Megalitres Year Annual Days Rank Total Missing (Megalitres) ----------------------------------------------- 1984 89620 6 1985 32830 24 1986 38880 20 1987 11990 37 1988 178300 1 1989 57260 14 1990 64260 13 1991 83830 7 1992 96150 4 1993 90080 5 1994 48570 17 1995 37440 23 1996 71710 11 1997 37870 22 1998 72040 10 1999 49090 16 2000 31110 25 2001 20730 29 2002 20480 30 2003 72200 9 2004 19350 32 2005 119500 2 2006 7366 41 2007 9989 38 2008 38660 21 2009 66150 12 2010 9498 39 2011 40680 18 2012 22670 28 2013 17560 33 2014 13830 35 2015 20140 31 2016 83500 8 2017 39160 19 2018 17040 34 2019 9217 40 2020 22780 27 2021 105800 3 2022 25020 26 2023 51540 15 2024 12770 1 36 2025 0.0 338 42 Total 1957000 339 Minimum 0.0 Maximum 178300 Mean 46590 Median 38270