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 July 24th)

Tidal Thames (Port of London Authority)
- River traffic may again pass freely under Hammersmith Bridge.
Details are in this Notice to Mariners dated July 16th 2021.

Non-Tidal Thames (Environment Agency)
- For the latest information on river and lock status, please check the information page from the Environment Agency.
-Boaters should follow the rules in new guidance effective from July 19th 2021

- Current and future restrictions and closures  (list updated on July 23rd).


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


July 16th 2021

Hammersmith Bridge re-opens for pedestrians and cyclists

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July 19th 2021

New edition of Tidal Thames News published by Port of London Authority.

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July 21st 2021

Swan Upping 2021 

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