DEFA says the project will start in 2027
Planning approval has been granted for a number of safety works to be carried out on Kionslieu Reservoir.
The Department of Environment, Food and Agriculture says recent inspections found walls needing to be upgraded to modern standards.
It will also include improving footpaths, installing new pipes and overflow system and reshaping banks.
During the planning committee hearing, both Chair Rob Callister and committee member Sam Skelton raised concerns about the length of time the process had taken.
Mr Skelton said the initial report was carried out in 2018 followed by a second one in 2022.
Mr Callister questioned whether the works were ‘urgent’ given the length of time it had taken to bring the application forward.
However, the committee voted 5 to 1 in favour of the application.
The department says once the works are complete, it will increase the water levels – these were lowered in 2019 as a safety measure.
Minister for Environment, Food and Agriculture Clare Barber said: "It’s a significant milestone for the project. The works will secure the future of Kionslieu Reservoir for generations to come, strengthening dam stability, improving flood management, and protecting its environmental and recreational value. We look forward to work getting under way."
The project is scheduled to begin in 2027.

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