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The Alberta government owns and operates the Moose Lake Weir located approximately 7 km downstream of the Moose Lake outlet. The concrete weir was built in spring 1985 to improve fish and wildlife habitat, stabilize the lake level for recreation purposes, and improve the water supply storage for the nearby town of Bonnyville.
A relatively wet year in 2017 resulted in the highest recorded lake levels since 1966 and caused flooding of development and infrastructure around Moose Lake. This flooding led to concerns about Moose Lake Weir management options. A subsequent 2018 study established that removing the weir would not significantly impact water levels.
In Fall 2019, Alberta Transportation assumed responsibility for the removal of the Moose Lake Weir.
- May 2021 – Final design completion
- Spring 2021 – Public engagement
- Summer 2021 – Project tender
- Winter 2021 – Construction period
Removing the weir will return the Moose Lake Weir site to its natural, pre-construction state. Site naturalization is an ecologically based approach to restore non-native conditions to its previous natural condition or better.
- Learn more about the removal of the weir and access recorded information session content.
For more information on the Moose Lake Weir Removal, contact the Project Team:
Alberta Transportation and Economic Corridors
Major Capital Projects Branch
Twin Atria Building
4999 98 Avenue
Edmonton, Alberta T6B 2X3
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