A Severn Rivers Trust walkover survey of one mile of river in September 2012 indicated that the diversity of the habitat and lack of in-stream woody debris may be part of the reason for this reduction. This survey was undertaken at the request of several landowners along the river around the hamlet of Tylwch who are concerned about the reduction in trout numbers.

The project fenced 2.5km of river bank which were heavily grazed by cattle resulting in bank erosion and sedimentation in the river. This has the dual benefit of improving the water quality for spawning salmonids and increasing the area of riparian habitat available for river-side invertebrates. In addition installation of large woody debris, native tree planting and soft revetment protected river banks and improved habitat biodiversity in the river.
The Dulas is one of the most important rivers in the Upper Severn for brown trout, however, the project will also be beneficial to other important species e.g. Atlantic salmon, European otter and water voles.


  • Install 2.5km of stock fencing at key locations throughout the catchment to reduce bank erosion and stock access
  • Soft revetment and large woody debris at key locations
  • Tree planting at key locations to protect the river banks from erosion and to provide shade to spawning gravels


Photo – Cattle poaching at a river crossing


Photo – New stock fencing protecting eroding bank plus evidence of preparation of soft revetment installation

This project was funded by the SITA Enriching Nature Programme.
We would like to thank all of the landowners and fishing clubs who are involved in this project.
For more information please contact Mike Morris