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 Thursday October 21st)

Tidal Thames (Port of London Authority)
- RTS has summarised its position and hopes about Hammersmith Bridge in this paper updated in October 2021.

- PLA has issued advance notice about Richmond Lock and Weir draw-off in November 2021 and various river closures in the next 6 months.

- The Thames Flood Barrier will be closed today (October 21st) in anticipation of a tidal surge.

Non-Tidal Thames (Environment Agency)
- For the latest information on river and lock status, please check the information page from the Environment Agency.

- Current and future restrictions and closures from the Environment Agency (list regularlyupdated).

- On September 27th, the Environment Agency updated the 2021-2 Investment Programme involving lock closures during the winter period.


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


October 13th 2021

Obstructing access to Molsey lock has resulted in conviction.


October 18th 2021

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

angling trust report.jpg

September 27th 2021

Two new research reports have been published. 

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