As a result, on-water recreation, including a designated swimming and beach area, will remain open until Seqwater finalises the new project timeline.

Seqwater has recently modified the access points to the multi-use trails around the lake to ensure they can remain open during the upgrade and rejuvenated the adjacent wetlands area.

Seqwater Chief Executive Officer Neil Brennan said unfortunately the tender process did not result in any viable tenders.

“Dam upgrades are highly technical and complex projects. We are now conducting a post tender review to better understand the response of potential contractors before re-issuing a tender for the project. The new tender will reflect the review process,’’ Mr Brennan said.

“The upgrade is part of Seqwater’s Dam Improvement Program designed to ensure SEQ dams can continue to perform safely into the future.

“Dams are large-scale public infrastructures and maintaining their safety is paramount,” Mr Brennan said.

“The upgrade of Ewen Maddock will increase the dam's resilience to extreme events and bring the dam in line with modern engineering design standards. The revised construction schedule will not increase any risks to dam safety.”

To undertake the upgrade safely the lake’s water level will need to be lowered to about 60 per cent of its full supply level.

During the upgrade, all on-water recreation, including the designated swimming and beach area, will be closed for the duration of the upgrade work. The closure will also extend to Maddock Park which will be required as a set down area for the project.

Once the new timeline for the project is finalised Seqwater will host a community event at the newly renovated wetlands area to update the local community.

Seqwater expects to issue a new tender before the end of the year. For more information about the Dam Improvement Program, visit www.seqwater.com.au/damimprovement.