Tidal River Thames

The Tidal Thames commences at Teddington Lock (where the non-tidal Thames, managed by the Environment Agency finishes) and runs to the North Sea.  From Teddington Lock to Shivering Sand Tower (the seaward limit) is 77.8 miles.  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.

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.
 

Download River Thames Tideway Guides:

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

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Chelmsford - North bank east of the old GLC boundary
Kent & East Sussex - South bank east of the old GLC boundary
South London - Teddington Weir to the old GLC boundary by Purfleet and all navigable creeks not covered by North & East London Branch.

Navigation Authority

The Port of London Authority
London River House,
Royal Pier Road, Gravesend.
Kent DA12 2BG
T: +44 (0) 1474 562200
Port of London Authority website

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