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Swimming in Clevedon Marine Lake is NOT ADVISED until further notice.

A sample was taken from Clevedon Marine Lake on Monday 22nd July and the results indicate that the water quality in the lake has decreased.

The lake will be drained on Wednesday 31st July so that it can refresh with water from the Severn Estuary, then repeatedly during the next sequence of overtops between 31st July and 5th August.

The penstocks will be opened around 8am on 31st July, and the lake should refill any time after 6pm.  Volunteers will be cleaning in and around the lake from 10.30am on 31st July.  Refills have become a popular spectacle to watch – as 30 million litres of sea water gushes over the seawall into the lake.

The water quality will be retested on 7th August, after the overtop.  Updates on the water quality in Clevedon Marine Lake are shared here.

There’s always lots to do at the lake in terms of litter picking, cleaning, muscle work and site management, so if you can spare any time to help out, please contact

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