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Author Topic: Seqwater dam releases update  (Read 1874 times)

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Seqwater dam releases update
« on: February 25, 2013, 07:58:34 PM »
Seqwater dam releases update
25 Feb 2013

The Seqwater Flood Operations Centre was mobilised on Tuesday, 19 February 2013. Updated forecasts are indicating potential heavy rainfall, and low-level releases from Wivenhoe Dam have increased to ensure dams are near Full Supply Level before potential significant inflows occur. The releases are being managed to minimise impacts on downstream communities.

North Pine Dam

North Pine Dam is currently at 96% and no releases are being made from the Dam. In order to reduce the dam to the Temporary Full Supply Level of 88%, releases were made overnight. Due to significant inflows into the Dam this morning, releases will commence at 2.00 pm at a rate of around 200 cubic metres per second.

Releases in the order of 1000 cubic metres per second are possible, if the catchment rainfall continues at this morning’s intensity through to tomorrow. Young’s Crossing will be closed prior to the Dam release. How long releases will be required will depend on rainfall.

For further information on the closure of Young’s Crossing, please contact Moreton Bay Regional Council.

Wivenhoe Dam

Wivenhoe Dam is currently at 88.6% and steady. Releases are continuing to bring the dam back to the temporary full supply level of 88%. Catchment average rainfall in the last 12 hours was approximately 35mm. The current rate of release is 280 cubic metres per second. Twin Bridges, Savages Crossing and Colleges Crossing are closed and will remain closed until the rain system clears the dam catchments. It is possible that other bridges may need to be closed later in the week, but current modelling indicates that Burtons Bridge is unlikely to be impacted prior to Tuesday night.

Please contact your local council for details of road and crossing closures.

Somerset Dam

Somerset Dam is currently at 101% and no releases are currently being made from the Dam. Releases will recommence once further rain occurs in the Dam’s catchment area.

Leslie Harrison Dam

Leslie Harrison Dam is currently at 96%. Releases from Leslie Harrison Dam recommenced at 8am this morning and are currently at a rate of 22 cubic metres per second. This release will have limited downstream impacts as the release will remain within the confines of Tingalpa Creek. However, as heavy rain is forecast for the catchment, large releases may be necessary later today.

Ungated Dams

Due to rainfall in the catchment, the following un-gated dams are currently spilling:

    Atkinson Dam
    Baroon Pocket Dam
    Bill Gunn Dam
    Borumba Dam
    Cedar Pocket Dam
    Lake Clarendon
    Cooloolabin Dam
    Enoggera Dam
    Ewen Maddock Dam
    Gold Creek Dam
    Hinze Dam
    Lake Macdonald
    Lake Manchester
    Little Nerang Dam
    Moogerah Dam
    Nindooinbah Dam
    Sideling Creek Dam
    Wappa Dam.

Recreation update

As a result of the recent heavy rainfall, a number of Seqwater's lakes have been closed as a precautionary measure and in the interest of public health and safety.

These closures are based on expected inflows to the lakes and the potential adverse water quality as a result of the rainfall event. Water quality samples will be taken as soon as practical and lakes will be re-opened when tests indicate it is appropriate to do so.

Signage will be placed on site at closed lakes.

The majority of land-based recreation areas and camping grounds are open, with a few exceptions.

Please check the public and safety notices at for full details.

Visitors to open Seqwater lakes and recreation areas are urged to take precautions and exercise care when visiting due to submerged hazards, debris and possible damage to infrastructure and trees from the extreme weather event in January.

Water supply

Seqwater is undertaking precautionary measures to maintain continuous supply of quality water to South East Queensland. The Gold Coast Desalination Plant remains on standby and all parts of Seqwater’s water treatment are prepared for the upcoming rain event.

Further from SEQWater

Recreation facilities - closures and safety UPDATE (Friday, 22 February)
Water-based recreation activities
The following Seqwater lakes remain closed to ALL water based activities
Lake Baroon
Lake Borumba
Lake Kurwongbah (Sideling Creek Dam)
Lake Samsonvale (North Pine Dam)
Lake Somerset
The temporary closure of these lakes is a precautionary measure based on inflows into the lakes and potential adverse water quality in the lakes as a result of the current rainfall event.
Water quality samples will be taken as soon as practical, and the lakes will be re-opened as soon as conditions indicate that it is appropriate to do so.
The lakes will remain CLOSED until further notice. Signage will be placed on site, and we will update our website notices accordingly.
Please note that the Eastern boat ramp at Hinze Dam remains closed, pending rectification works on the access road. The Western boat ramp at Hinze Dam is open during normal opening hours (6am to 6pm).
Land-based recreation activities
The majority of Seqwater recreation areas and camping grounds are open to visitors following the recent extreme weather event.
Following is a list of the recreation areas that remain closed for various reasons:
CLOSED – Lake Somerset – The Spit Recreation Area is closed due to inflows into the lake
CLOSED – Lake Somerset – Somerset Park day use area and camp ground
CLOSED – Lake Moogerah - Lower Recreation Area (Reynolds Creek) is closed due to fallen rocks and debris on access road.
CLOSED – Hinze Dam, Eastern Boat Ramp due to damage to access road.
CLOSED – Little Nerang Dam – access road is closed due to storm damage. Will remain closed until further notice.
CLOSED – Martin Williams Nature Walk at the Southern Recreation area at Lake Baroon is closed due to track damage associated with the recent weather event. The other recreation facilities at Lake Baroon are open for land based recreation activities.
Wyaralong Dam – Both the Eastern and Western Trail Head recreation areas are open, Mount Joyce Mountain Bike downhill trails open, Mt Joyce Base Camp open
CLOSED – Shoreline Trail due to damage at the Oakey Creek causeway.
Visitors to all Seqwater sites are urged to take precautions and exercise care when visiting due to debris and the possible damage to infrastructure and trees.

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