Catchment projects

Hover over a numbered spot to see a project summary. Click on a spot to see the full project details. Alternatively view the project list.

The Colne rises from a subterranean river at a spring in North Mymms Park. Tributaries of the Colne include the Mimmshall Brook, Tykes Water, River Ver and Ellen Brook.

Project status





Projects affecting entire catchment

Last updated: 10 August 2022

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