5. Revisit failed river restoration at Digswell

Theme: Water Quality, Habitats and Wildlife


  • That whatever the flow level, the river and its associated habitats, including banks and floodplains, are managed to support chalk stream species

Project description

To revisit and revise some previous restoration works to the river, which failed to achieve their desired aims.

Previous stone deflectors installed in the river caused silting and didn’t achieve their desired aims. However, this site holds an important water vole population and several measures could improve the site for this species, and other river wildlife. These include:

•    Removal of the old stone deflectors
•    Installation of wooden deflectors
•    De-silting the channel
•    Removing channel obstructions
•    Reinstating the lower channel
•    Removing and controlling Himalayan balsam

Grid reference: TL24261510
Project lead: Hertfordshire Groundwork Trust
Project partners: Herts & Middlesex Wildlife Trust; Landowner
Project start: 2013
Revisit failed river restoration at Digswell

Design by LTD Design Consultants and build by Garganey Consulting.