Managed variations to weir pools at locks 2, 5, 7, 8 and 9 are expected this year along with Lock 15 at Euston and at Lock 26 at Torrumbarry. Weir pool levels are generally more likely to be higher during winter and spring and lower during summer and autumn. However, levels could vary at any weir along the river and at various times during the year.
Changes to weir pool levels occur for numerous reasons including: periods of high water levels due to natural high flow events, periods of low water levels to allow for scheduled maintenance, and managed variations to water levels to restore a more natural wetting and drying cycle to the system.
The ranges within which weir pool levels are planned to vary are detailed in the table below.
Maximum expected range in pool levels
|
Upper level |
Lower level |
|
|---|---|---|
| Lock 2 (FSL=6.1m) | FSL +0.5m | To be determined |
| Lock 5 (FSL=16.3m) | FSL +0.45m | To be determined |
| Lock 6 (FSL=19.25m) | FSL +0.25 | To be determined |
| Lock 7 (FSL=22.1m) | FSL +0.5m | FSL -0.9m |
| Lock 8 (FSL=24.6m) | FSL +0.8m | FSL -1m |
| Lock 9 (FSL=27.4m) | FSL +0.24m | FSL -0.1m |
| Lock 15 (FSL=47.6m) | FSL +0.6m | FSL -0.2m September–April, FSL -0.4m May–August |
| Lock 26 (FSL=86.05m) | FSL | FSL -0.1m September–April, FSL -0.5m May–August |
The weir pool levels will continue to be managed for key needs including irrigation diversions, infrastructure maintenance, navigation and recreation. The Murray–Darling Basin Authority (MDBA) will support, whenever possible, major recreational events such as the Robinvale Ski Classic and Southern 80 ski race.
River users can keep up to date with current weir pool levels by viewing River Murray data at https://riverdata.mdba.gov.au and can keep in touch with upcoming changes by registering to receive the free River Murray weekly report.
The MDBA will issue further advice if there are any significant changes to the above.
River users wanting more information can contact the MDBA on (02) 6279 0100.
Ends
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