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Weir pool raising along River Murray

09 Oct 2014

A trial has begun to raise the water in the Lock 1 and 2 reaches of the River Murray.

This trial is to mimic the natural variability of water levels that occurred before the weirs and locks were built.

The water levels have already been raised within normal operating range for Lock 1 from 3.2 to 3.5 metres AHD, and for Lock 2 from 6.1 to 6.4 metres AHD.

This trial intends to raise the weir pools beyond these water levels by a further 20 centimetres at Locks 1 and 2 (to 3.7 metres AHD and 6.6 metres AHD, respectively).

The goal of the project is to mimic a spring pulse to create additional habitat for native species in the River Murray; improve the health of the vegetation near the channel and connected floodplains and wetlands; and increase the numbers of frogs, birds and fish in the system.

The water will be raised until late spring/early summer and user are urged to use caution when navigating near river banks and using boat ramps due to the changed conditions.

Water users are also asked to slow down near shack communities, jetties and the water's edge to minimise the possibility of bank erosion and damage caused by wave wake effects.

The Department for Environment, Water and Natural Resources and other service providers will be monitoring the flow of water across floodplains and wetlands.

The Department will also be monitoring the ecological responses to the variable water levels.

If you are interested, you can help monitor the ecological responses and how the water travels across the landscape.

Further information such as where the water has been modelled to go, can be found on the DEWNR website.

If you want further information, please contact Wendy Georganas on (08) 8463 3918 or email RiverineRecovery@sa.gov.au

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