Water Information Reporting
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 13/11/2025
Site 615013 Mortlock River North - Frenches
Variable 151.00 Stream Discharge Volume in Megalitres
Year Annual Days Rank
Total Missing
(Megalitres)
-----------------------------------------------
1975 13280 170 21
1976 6376 8 33
1977 3430 45
1978 13800 20
1979 5839 34
1980 2302 47
1981 44000 4
1982 12670 23
1983 52230 3
1984 18380 14
1985 5031 38
1986 20290 11
1987 10890 26
1988 15740 17
1989 12690 22
1990 21250 10
1991 15680 18
1992 34380 5
1993 17100 16
1994 6778 31
1995 65350 2
1996 14460 19
1997 5683 35
1998 11180 25
1999 71270 1
2000 19980 13
2001 3449 44
2002 1717 49
2003 21270 9
2004 6505 32
2005 10160 27
2006 12120 24
2007 2946 46
2008 7500 30
2009 8976 29
2010 1352 50
2011 9211 28
2012 1891 48
2013 4766 41
2014 5266 36
2015 4470 43
2016 20080 12
2017 23420 8
2018 17130 15
2019 4987 39
2020 956.7 51
2021 31120 6
2022 27110 7
2023 5252 37
2024 4983 40
2025 4677 50 42
Total 761400 228
Minimum 956.7
Maximum 71270
Mean 14930
Median 10890