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Eels Ash River

Volunteers from Spelthorne Natural History Society are monitoring upstream eel migration on the River Ash for a third year in 2016. The Zoological Society of London has an eel trap on the Ash near Staines.  Here young eels travelling up the river are captured and measured by volunteers before being released unharmed to continue their journey. 


A one day course providing training in a new technique to monitor the health of rivers is being held by the Environment Agency in Twickenham on 30th June 2016.  This course will be of value to anyone working within catchment partnerships or local groups with an interest in river monitoring and assessment.


Help monitor the state of the Colne Catchment and its wildlife by joining the Thames Water Blitz.


Catchment areas of the River Colne

River Chess Colne Valley Park North Colne Valley Park South Rivers Gade and Bulbourne Rivers Misbourne and Alderbourne Rivers Pinn, Ash, Duke of Northumberland and Longford Upper Colne and tributaries River Ver

ColneCAN RT @RiverWildlife: Success! Dragonfly and damselfly exuvia at Cornmill Stream
ColneCAN RT @Colne_Valley: Boris Johnson MP signing the Colne Valley Charter, great support for the Colne Valley Regional Park. @Hillingdon https://…
ColneCAN RT @ChilternsAONB: @RiverChess volunteers out monitoring the river today as part of an investigation into low flows in the Chesham area htt…

Roll over the map to highlight the individual catchments, click to visit the action plan for that catchment.

You can help in many ways: from saving water at home to more hands-on practical work with the rivers themselves. You may also have ideas about new or existing projects – we would like to hear them!

Design by LTD Design Consultants and build by Garganey Consulting. From an original concept by the Herts and Middlesex Wildlife Trust.