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 V87 Output 30/01/2023 Site 616216 Helena River - Poison Lease Gs Variable 151.00 Stream Discharge Volume in Megalitres Year Annual Days Rank Total Missing (Megalitres) ----------------------------------------------- 1966 5231 145 19 1967 19520 3 1968 10570 7 1969 1427 41 1970 7795 9 1971 3432 26 1972 2754 28 1973 12410 6 1974 28640 1 1975 8574 8 1976 1337 42 1977 1025 47 1978 7270 14 1979 599.0 52 1980 1588 38 1981 18040 4 1982 1876 37 1983 12730 5 1984 2328 30 1985 2025 35 1986 5590 18 1987 1991 36 1988 7407 10 1989 966.4 49 1990 3535 25 1991 6981 15 1992 6019 16 1993 1075 46 1994 1325 43 1995 7404 11 1996 21190 2 1997 2062 34 1998 2304 31 1999 7402 12 2000 3828 24 2001 751.8 51 2002 1009 48 2003 4716 21 2004 2144 32 2005 4715 22 2006 1107 45 2007 3054 27 2008 2498 29 2009 5194 20 2010 0.0 58 2011 1230 44 2012 74.7 55 2013 1505 40 2014 567.0 53 2015 0.0 56 2016 902.0 50 2017 2071 33 2018 4411 23 2019 1545 39 2020 268.7 54 2021 7320 13 2022 5732 17 2023 0.0 337 57 Total 279100 482 Minimum 0.0 Maximum 28640 Mean 4811 Median 2413