Cooloolabin Dam is now better equipped to withstand natural disasters such as large floods and earthquakes, with Seqwater completing a series of upgrades on the 40-year-old dam.

The last of the series of upgrades was a $2.5 million project that began in October 2017.

Construction work involved the reconstruction of the embankments either side of the spillway, with the installation of new filter zones and foundation drains in the embankment.

In addition, landscaping work was undertaken on the embankments, with turf planted as well as walkways and signage installed in the area.

Seqwater Acting Chief Executive Officer Dan Spiller congratulated the project team and its contractors in completing the project on time and under budget.

The upgrades were delivered in line with Seqwater’s Dam Improvement Program – a rolling program of dam upgrades to ensure Seqwater’s dams meet national and state safety standards into the future.

Cooloolabin Dam during upgrade work

In addition to Cooloolabin Dam, Mr Spiller said a number of other dams on the Sunshine Coast and surrounding regions had been earmarked for upgrades as part of Seqwater’s Dam Improvement Program.

“Dam upgrades were completed at Wappa Dam near Yandina last year, and over the next five years upgrades are planned for Sideling Creek Dam in Brisbane’s north, Ewen Maddock Dam and Lake Macdonald Dam on the Sunshine Coast,” Mr Spiller said.

Mr Spiller said an independent assessment of Seqwater’s dams had considered factors such as downstream development and population growth, changes to design standards, environmental and economic risks, flood capacity and earthquake stability.

“Dams are long life assets and require continual monitoring and maintenance,” Mr Spiller said.

“Most of South East Queensland’s dams were constructed between the 1960s and 1980s.

“Since then, there have been significant advances in dam design and our understanding of the size and impact of extreme weather events has grown.

“With many of our dams there has also been significant population growth which also impacts on the level of safety required.”

Mr Spiller thanked residents in the Cooloolabin area for their patience and cooperation while the upgrade work was carried out.

For more information on the Dam Improvement Program visit

Cooloolabin Dam during upgrade