Technical Information

This is a link to the Revised Guidelines for River Weirs Construction. It is a large file and will take a little while to download.


Click here to download (PDF)

Reporting an environmental incident

To report an environmental incident such as suspected poaching, pollution or wildlife crime, the dumping of hazardous or industrial waste and illegal abstraction from watercourses etc, call Natural Resources Wales’ incident hotline on 0300 065 3000 (24 hour service).

Afonydd Cymru
The Rivers Trust
Natural Resources Wales
The Wild Trout Trust