The Bill Gunn Dam was built to increase the capacity of Lake Dyer. With only a small natural catchment area, the dam is filled by diverted flows from Laidley Creek.

It is an un-gated dam, meaning that when it reaches 100 per cent capacity, water flows over the spillway and safely out of the dam. If you would like to be notified when Bill Gunn Dam begins to spill, please sign up to our free dam release notification service.


Lake Dyer is a popular recreation spot for boating, water skiing and jet skiing enthusiasts, as well as fishermen and those on paddle craft. 

Permits are not required for boating. A SIPS permit is required for fishing at Lake Dyer. Visit the Fisheries website for information and to purchase your permit.

As a result of feedback received from the community, a designated swimming area has been installed at Lake Dyer.

Download the Lake Dyer Recreation Guide for detailed information about activities, as well as maps and important safety information.

Dam Improvement Program

In 2012-13, we commissioned an independent review of our 26 referable dams, which found improvements are needed at a number of our dams to meet the Queensland dam safety guidelines into the future.

We have prioritised a program of dam upgrades in a staged approach to give us time to scope, design and plan, while maintaining public safety, security of water supply and delivering best value for money.

Visit our Dam Improvement Program page for more information and to subscribe to our e-updates.

Key facts

Name: Bill Gunn Dam / Lake Dyer
Watercourse: Laidley Creek
Location: West of Laidley
Catchment area: 3.0km 2
Length of dam wall: 1050.0m
Lake surface area: 100.0ha
Year completed: 1987
Type of construction: Zoned earthfill embankment with a central clay core
Fully supply capacity: 6947ML
Current capacity: 195 (2.8% full) at 20-08-2019 11:02am
Spillway level: 110.0mAHD