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Thursday, 04 August 2022 12:38

Environment Agency starts work on £4.2m refurbishment of key Somerset flood defence asset

The Environment Agency is starting work on a £4.2 million refurbishment scheme one of Somerset's most important tidal defence assets.

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The Dunball Sluice is being refurbished so it can continue protecting Bridgwater and the Somerset Levels and Moors.

The scheme will see the refurbishment or renewal of mechanical and electrical components in Dunball Sluice. 

This sluice controls flood flows in the King’s Sedgemoor Drain (KSD) and the River Sowy, which is also known as the River Parrett Flood Relief Channel.

Dunball Sluice is a critical structure in the defence of the Somerset Levels and Moors and became operational in 1971. It sits at the location where the King’s Sedgemoor Drain (KSD) meets the tidal River Parrett. 

4 gated culverts control water levels by releasing water into the Parrett when the tide permits while preventing the tide from bringing saltwater into the KSD. This would impact nationally and internationally designated freshwater habitats.

The refurbishment will also make environmental improvements to encourage the migration of eels and improve access for otters between the KSD and the River Parrett. 

Health and safety improvements for Environment Agency staff and contractors who operate and maintain the sluice will also be completed as part of the scheme.

Rachel Burden of the Environment Agency said:

“The project will extend the life of Dunball Sluice. Reducing the potential for failure and mitigate the risk of flooding to properties and internationally and nationally important freshwater habitats.”

The scheme, funded by the Department for Environment, Food and Rural Affairs (Defra) with £650,000 partnership funding provided by Somerset Rivers Authority. 

Work on the scheme began at the end of July 2022 and is programmed to be completed by 2024.

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