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River

Dedham deepside

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About

As the name suggests, this is the deep swimming area to the West of the lock at Dedham Mill heading towards Stratford St. Mary on the River Stour Navigation. This is the quiet side for swimming but a lot deeper (10-12ft estimate). As the River Stour is a navigation the river flow is generally gentle, with some reeds in places. You will not be able to put you feet down unless right at the edge. This is a perfect strip of river for those wanting to train for longer swims (1.2km to Stratford St Mary) or just enjoy the solitude as there are very few river users.

Location

Getting there

Parking at the Mill Pond Car Park (fee payable on the MiPermit app) or somewhere local. There may be local buses, but there is no train station at Dedham. Cross the lock at the Mill Pond and turn left, walking to the Portage Point approximately 150m from the kissing gate.

Accessibility

Water is accessed at Portage point - not suitable for wheelchair access. As mentioned, the water is deep. There is a footpath running alongside the river for your "spotter" to keep an eye on you whilst swimming.

What swimmers say

Facilities

Nearby parking

Activities

Swimming Long swim

Landscape

Big drop off Quiet location

Water sports

SUP

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Plan your swim

Before you go

  • Check recent rainfall. Rivers rise fast after heavy rain.
  • Never swim in fast-flowing or flooded water
  • Test entry/exit before you commit. River banks can be undercut.
  • Cold water shock is real. Enter slowly and control your breathing.
  • Watch for submerged obstacles like branches, weirs, and rocks

Conditions change fast. Always check the latest data, read recent community reports, and swim within your ability.

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Frequently asked questions

Is this river safe for swimming?

Check the Conditions tab for current flow rate and recent rainfall. Rivers can become dangerous after heavy rain. Review community reports for hazards like weirs, strong currents, or access issues.

How cold is the water?

Check the Temperature tab for the current estimate and 7-day trend. River temperatures respond quickly to weather changes. In the UK, expect 5-10°C in winter and 15-20°C in summer at most locations.

What should I bring?

A tow float, shoes with grip for slippery banks, and warm layers for after. Water shoes protect against rocks and debris on the riverbed.