24. Enhancing fish passage
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
- That water quality, temperature and river bed quality are such that they support chalk stream ecology
This project aims to ensure that Hertford’s weirs do not create a barrier for fish migration or movement.
Through Hertford, the rivers Beane and Lea have been historically modified with a number of weirs which prevent fish passage and impound the river, causing siltation and habitat degradation of the upstream river channel. This project is a feasibility study to identify ways to improve fish passage along both rivers and improve river habitats. This could be achieved by removing, lowering, bypassing or notching the weirs or installing fish passes.