SunWater advice on Moolabah Weir

09 Feb 2012

Today SunWater advised that an engineering assessment has indicated that at present the Moolabah Weir structure remains stable even though the weir was showing signs of increased erosion.

Flood waters into the Thuraggi water course have subsided, as a result there are no longer flood waters entering the weir.

At 3pm water was no longer spilling over the weir. The current water level at the weir is sitting at 50mm below the crest and reducing.

SunWater has also opened the release gates at the weir to further reduce the load on the weir and is releasing the equivalent of 1,400ML per day.

In the unlikely event of the weir failing, water would flow down the already flooded Thuraggi water course. The water would flow over the Moonie Highway that is currently flooded and closed.

SunWater has engaged with the Local Disaster Management Group to continue to exclude access downstream of the weir.

Local SunWater staff will remain at the site and undertaking 24 hour surveillance of the weir and providing status updates to SunWater engineers. Once the water has receded further and it is safe to do so, SunWater engineers will commence a thorough inspection of the weir.

SunWater will continue to liaise with the Local Disaster Management Group.

Moolabah Weir is located in St George on the Thuraggi Water Course upstream of the Moonie Highway bridge. The weir has a storage capacity of approximately 2,000 ML of water under normal circumstances. Under the current flood conditions the current storage could be 3,800ML.


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