What we do Catchment partnerships Coln Habitat Management Programme (Entrust) Restoration of river ecology and bankside habitat through in-channel works and reduction of overshading. Installation of large woody debris and leaky dams to slow water flow and improve fish habitat. Himalayan balsam removal. Working with local volunteers. To continue this project, further actions required include habitat restoration, organising more volunteer work parties, overshading management, implementing more natural flood management through large woody debris, and controlling the highly invasive Himalayan balsam. This project is led by the Gloucestershire Wildlife Trust and partnered by FWAG SW and the Environment Agency. To read more about the various projects within the Upper Thames Catchment Partnership, click here.