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River Thames Society

Welcome to The River Thames Society

Members of The River Thames Society are dedicated to protecting and preserving the natural beauty of the River Thames.


The Thames is one of the World's most fascinating and beautiful rivers. From source to sea, its 215 miles flow from springs in Gloucestershire through rural and developed areas to London and on to the imposing tidal estuary into the North Sea.


If you are inspired by the Society's aims and achievements and would like to help us to protect and promote the Thames, please become a River Thames Society member and join us as we continue our quest to preserve and develop the River Thames.

Important Navigational Information (last updated on Saturday December 2nd 2023)

Tidal Thames (Port of London Authority)

- River users should check the PLA website for information about the Tidal Thames.​
- The Richmond annual draw-off started on Monday November 6th and is planned to end on Monday December 4t
h. Details are in a Notice to Mariners

​Non-Tidal Thames (Environment Agency)

- Stream Warnings are in force for most of the non-tidal River Thames.

- Boaters are requested to check the information page from the Environment Agency for details of river conditions, planned closures and service failures. 

- The EA has announced that Chertsey Lock is now closed until further notice. Repairs are required and plans being prepared. This web page gives EA information. 

-The Environment Agency has updated its Investment Plan for winter 2023-2024. For boaters this means lock closures . The latest plan is here


Almost every day, there is news about the River Thames. Here are some recent headlines.
There are more items on our News page.

231121 TTN.jpg

November 21st 2023

A new edition of Tidal Thames News  has been published.


November 14th 2023

Funding Campaign flotilla outside Parliament


December 2nd 2023

An appeal to fund a Thames footbridge has been launched.

Explore The River Thames

River Thames Society Members have contributed descriptions and pictures of the River Thames from source to sea.

Click on a picture below to read more about a section of the River Thames.






Length in miles


Fish species


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