Groundwork South, Managing agent to the Colne Valley Park CIC. The Colne Valley Park covers over 40 square miles and is the first real taste of countryside to the west of London. The Valley hosts a mosaic of farmland, woodland and water with 200 miles of river and canal and over 60 lakes. It is also a living, working environment, providing employment and homes for many people as well as being a haven for wildlife. Visit our what we do.

Free Training with the Wild Trout Trust. Book now to learn skills to improve river habitats with these free training days. The River Chess is a chalk stream that rises in Chesham in Buckinghamshire and runs through the Chess Valley to Rickmansworth, where it becomes a tributary of the Colne. On our site, you can find out what makes the Chess special, the problems it is facing and how the River Chess Association is working to conserve the river.

A new approach to catchment management. The Catchment Partnerships In London Group. The Catchment Partnerships In London Group. Find out about our diverse work to bring Londons waterways to life. Join in one of our many practical events. Please see our calendar of events. For opportunities to get involved.