There are several community groups operating to enhance parts of the Colne Catchment:
- Herts Countryside Management Project
- Ver Valley Society
- Misbourne river action
- River Chess Association
- Friends of the Colne Valley Park
- Chiltern Society
- Watford in the water
The Colne Valley Fisheries Consultative is a membership organisation open to local riparian owners, angling clubs, holders of fishing rights, private and commercial fishery managers, local government and environmental groups and anyone having an interest in aquatic habitats in the Colne Valley catchment.
In addition there are many other groups that focus on individual nature reserves, fisheries and other sites.