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Open water swimming


Safety advice for open water swimming from British Triathlon.

Detailed guidance about outdoor swimming in different conditions from the Outdoor Swimming Society. There are guides on swimming in different temperatures: summer / cold water / ice, types of water: rivers / lakes & quarries / sea, etc.

Check water quality of the River Dee and around the UK coastline with the Safer Seas Service Interactive Map, plotting CSOs (combined sewage overflows).

Check the tides in the rivers and around the coast at Natural Resources Wales. This shows the flow of the water – the peaks are high tides which change the direction of the flow. It is not recommended to swim in the Dee when the flow is reversed.

Local Venues

Our most local venue is the River Dee at Eccleston. However, this is unmanned and only recommended if you are familiar with the river and the risks. If you are about to swim in the river with others, here is an emergency contact sheet where everyone can log their details here, just in case:

River Dee swim emergency contact details Google sheet

Here are some of our other local open water swim venues, please check their websites and facebook pages for details:

Open water coached swim sessions

Local venues offering open water coached sessions:

WESWIMRUN at Princes Dock, Liverpool

Special offer for CTC members – sign up to one of our Introduction to Open Water Swimming Courses (about 45 min in the water, group size 10 max, £12.50pp) and you will receive a free swim session (normally £5). Details & booking here.

1-1 coaching is also available at £32pp.

Previous open water coached swim sessions

Swim & picnic at Wildshore Delamere July 2023
Swim & picnic at Wildshore Delamere July 2023

Swim & picnic at Wildshore Delamere July 2023

Swim & picnic at Fourways Quarry, Oakmere

It was brilliant thanks to all the organisers!

Lovely venue and lovely food. Thank you for organising.

It was fantastic! Thank you v much. The food was yummy, thank you for the time and effort you spent on it. Looking forward to the next one.

Thank you for great evening in the sunshine. Well organised and I found the coaching tips really helpful…yes my triceps now ache!!

Big thanks to all involved, lovely swim and picnic – great end to a sunny weekend even if I wasn’t quite brave enough to go in without my wetsuit!!