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.
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).
