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River Thames – tidal

The tidal Thames commences at Teddington Lock (where the non-tidal Thames, managed by the Environment Agency finishes) and runs to Shivering Sand Tower and into the North Sea.

River Thames map

Limehouse Basin
Hammersmith Bridge with boats underneath
Hammersmith Bridge waterways heritage structure at risk
IWA London Walks guide, Charlie Forman
Limehouse Basin

Facts & Stats

77.8 miles


The length of the tidal River Thames that is navigable.

0 locks

From Teddington Lock to Shivering Sand Tower

The tidal Thames is joined by the Grand Union Canal at Brentford, Regent’s Canal and Limehouse Cut at Limehouse, Deptford Creek, Bow Creek (for the River Lee), Barking Creek (for the River Roding), Dartford & Crayford Navigation and the Thames & Medway Canal at Gravesend.

A charter in 1197 first gave conservation rights for the Thames to the Mayor and Corporation of London. The Port of London Authority has managed the tidal Thames since 1909.  


Waterway notes

Navigation authority


Useful Info

There are no locks, but the Thames Barrier is closed on certain occasions for flood defence and testing purposes; it is managed by the Environment Agency.


  • Thames Tideway Guide – Upstream Edition – covers Limehouse to Brentford, Limehouse to Teddington
  • Thames Tideway Guide – Downstream Edition – covers Teddington to Brentford, Teddington to Limehouse, Brentford to Limehouse

Local Events

Waterway news

Hammersmith Bridge

Hammersmith Bridge, an iconic heritage structure, is at risk from disagreements over funding and climate change.