Copyright © Government of Western Australia
Information supplied by the Department of Water and Environmental Regulation is protected by the Copyright Act 1968. That copyright belongs to the State of Western Australia.
Apart from any fair dealing for the purpose of private study, research, criticism or review, as permitted under the Copyright Act 1968, no part may be
reproduced or reused for any purpose without the written permission of the Department of Water and Environmental Regulation. Please click on the Copyright
link for full details.
Disclaimer / limitation of liability
The information contained herein is provided by the Department of Water and Environmental Regulation in good faith as a public service.
However, the Department does not guarantee the accuracy of this information, and it is the responsibility of recipients to make their own enquiries
as to its accuracy, currency and appropriateness. Telemetered data is provisional only and has not been verified for accuracy. If any aspect of this information is of significance to you, you should
discuss your particular circumstances with the Department. Please click on the Disclaimer
link for full details.
Should you require further information or technical assistance, please contact one of our water information officers.
Department of Water and Environmental Regulation HYANN V88 Output 20/06/2025 Site 616189 Ellen Brook - Almeria Pde Upper Swan Variable 151.00 Stream Discharge Volume in Megalitres Year Annual Days Rank Total Missing (Megalitres) ----------------------------------------------- 1965 57360 113 4 1966 24380 26 1967 64270 2 1968 53530 6 1969 10120 49 1970 22050 34 30 1971 16050 7 41 1972 17320 38 38 1973 41790 19 11 1974 64930 52 1 1975 21180 32 1976 17420 37 1977 7455 55 1978 36360 15 1979 16190 40 1980 23370 27 1981 58320 3 1982 29170 21 1983 39930 12 1984 30990 19 1985 15160 44 1986 49850 7 1987 32610 17 1988 35710 16 1989 15460 43 1990 29350 20 1991 57090 5 1992 49270 8 1993 37370 13 1994 22560 29 1995 44810 10 1996 47880 9 1997 17150 39 1998 21840 31 1999 37350 14 2000 27820 23 2001 13280 46 2002 15500 42 2003 27850 22 2004 12190 48 2005 31300 18 2006 7467 54 2007 13620 45 2008 12920 47 2009 19140 33 2010 2281 60 2011 9241 53 2012 3103 59 2013 18310 35 2014 9720 52 2015 4060 57 2016 18350 34 2017 17820 36 2018 26130 24 2019 9834 51 2020 5145 56 2021 24790 25 2022 22770 28 2023 3498 58 2024 9875 50 2025 0.0 196 61 Total 1532000 459 Minimum 0.0 Maximum 64930 Mean 25110 Median 21840