Part of Seqwater’s Dam Improvement Program, the Lake Macdonald Dam Improvement Project will enhance water security and enable the dam to withstand extreme weather events into the future.  

Works including aquatic fauna surveys and the construction of haul roads and office buildings commenced in November 2024 to prepare the site for major construction activities this year. Ongoing gradual lake lowering has also been occurring since late 2024 ahead of the wet season and upcoming works.  

Seqwater Executive General Manager Infrastructure, Planning and Capital Delivery, Sarah Dixon, said the Lake Macdonald Dam Improvement Project will help ensure the longevity of the important local water source for generations to come.   

“Seqwater is embarking on its largest-ever capital investment program, paving the way for a decade of enhanced water security and reliability for South East Queensland, and the Lake Macdonald Dam Improvement Project is a vital part of this initiative,” said Ms Dixon.  

“The Lake Macdonald Dam Improvement Project involves building a temporary upstream cofferdam to facilitate the safe construction of a new spillway, plus reconstruction of the existing earth embankments to ensure the dam meets modern regulatory requirements and continues to operate safely.  

“The upstream cofferdam will keep the lake water level as high as possible throughout construction to ensure that ongoing environment, recreation and community amenity is maintained.  

“The Lake Macdonald Dam upgrade is an important water security and safety project, and we encourage Sunshine Coast locals to drop-in to one of our information sessions where members of the project team can answer any questions,” she said.   

The Lake Macdonald Dam Improvement Project is expected to support approximately 150 jobs over the life of the project, and Seqwater is committed to keeping the community informed as the project progresses.   

For updates or to connect with a member of the project team, visit the Seqwater website.  

Lake Macdonald Dam Improvement Project Drop-in Community Information Sessions: 

Cooroy Library, 9 Maple Street Cooroy:  

• Tuesday 28 January: 11:30am – 2:00pm, Cooroy Library 
• Wednesday 5 February: 2:30pm – 5:00pm, Cooroy Library  

Cooroy Memorial Hall, 23 Maple Street Cooroy:   

• Saturday 1 February: 10:00am – 12:30pm, Cooroy Memorial Hall   

Pomona Memorial Hall, 6 Reserve Street Pomona:  

• Saturday 15 February: 9:00am – 11:30am, Pomona Memorial Hall  

ENDS