Big Brook Dam maintenance work

Ensuring the reliability of supply to customers in Pemberton.

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Project goal:

To ensure reliability of supply is maintained to customers in Pemberton


In construction

Delivery Date:

January 2019 - May 2019

Documents & Downloads

What's happening?

We are completing essential maintenance work at Big Brook Dam, starting in January 2019. This will involve some excavation work to repair the embankment of the dam. We will also be repairing some of the pipes and valves at the dam site.

Lefroy Brook Weir is the drinking supply source for the town of Pemberton; however this weir also receives water from Big Brook Dam.

Community impacts:

Lowering the dam's water level:

We will be required to lower the water level of the dam to complete this work. Access to the recreation beach and the ability to undertake recreational activities at the dam, may be impacted towards the later stages of this work. We will keep the public informed if this occurs.

Big Brook Dam Walk Trail:

Due to the temporary removal of the spillway walk bridge during this maintenance work, the Big Brook Dam sealed walk trail will not be available as a circuit walk. The walk bridge will be closed from late January 2019 to May 2019. The Bibbulmun Track will remain open and unaffected. See map for details.

Parking at dam site:

The construction team will be using the information bay carpark closest to the dam for the site office. Signage will be in place and the public will still be able to use the carpark located at the swimming beach.

Full access to the carpark will return following the completion of this work in May 2019. The canoe launch area in front of this carpark will be closed over this period. The public are asked to use the swimming beach area in front of the main carpark over this period.


Work will take place between the hours of 7.00am and 6.00pm Monday to Friday, however there may be a requirement to work Saturdays and Sundays in order to ensure the work is completed prior to Winter rains.

Big Brook Dam Maintenance Work Map

Documents & Downloads

If you require further information regarding this work, please contact Advisor - Community Engagement Elecia Piparo on (08) 9420 3265 or on

For more technical enquiries, please contact Water Corporation Project Manager, David Pickering on (08) 9420 2271 or via email at






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