The Environment Agency has completed the replacement of the Avon Water tidal outfall at Keyhaven Harbour in Hampshire, better protecting around 40 properties from flooding ahead of winter.

 Photo:The new flood gates being lifted into position using a crane

The Environment Agency has replaced the Avon Water Outfall at Keyhaven Harbour head of winter.

The outfall forms a barrier between the Solent and Avon Water and is a key part of the flood defence network. However, the outfall had significantly corroded, and the new outfall will prevent water in the River Avon from backing up during periods of high tide and flooding properties upstream.

Because much of the structure is submerged for long periods, the work depended heavily on tides with specialist divers carrying out detailed underwater inspections.

The new structure uses more durable materials than the original and will withstand the coastal environment, reduce future maintenance and extend the structure’s working life.

Artur Podsiadly, Environment Agency project manager, said:

“I am pleased to be able to share the news we’ve completed these vital upgrades ahead of winter, when tidal locking can contribute to flooding problems at Keyhaven.

“It is important to remember though that extreme weather is becoming more common due to climate change, and we can’t stop all flooding.”

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