As a dam operator might tell you, a dam is like a car: in that it needs ongoing inspection, maintenance and servicing to keep it running in top condition.

That is why Wappa Dam on the Sunshine Coast is the latest dam in South East Queensland undergo an upgrade. The upgrade is part of Seqwater’s Dam Improvement Program.

The dam, which was built in 1963, is located a few kilometres upstream of Yandina on the South Maroochy River.

It’s part of the SEQ Water Grid, which delivers safe, secure and cost effective water to 3.1 million people across the region each day.

An independent assessment of Wappa Dam found improvements were needed for the dam to meet Queensland and national dam safety guidelines into the future.

The upgrade began this week and is expected to take about five months to complete, subject t weather and any other unexpected delays.

Work will be limited to the northern abutment of th dam, near Nichols Road.

The project involves modifications to the embankment and spillway as well as the installation new filter drains.

The dam will remain operational during the upgrade and there will be no impact on recreational facilities.

Seqwater Acting Chief Executive Officer Jim Pruss said Wappa Dam was assessed as part of Seqwater’s Dam Improvement Program, which includes the regular assessment and monitor of the region’s 26 dams.

Assessments consider factors such as downstream development (including population grow changes to relevant design standards and improved estimates for extreme weather events.

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

“Improvements to Seqwater’s dams have been prioritised so we can deliver a staged program of upgrades that are scoped and scheduled to ensure the security of water supply while delivering best value for money."

The upgrade at Wappa Dam will not impact water supply to the region.


Wappa Dam on the Sunshine Coast is undergoing an upgrade as part of Seqwater’s Dam Improvement Program.