]> 2026-04-04T17:27:51+00:00 Case study:Brecon Weir Modification 500 en Approved No No Yes 51.95003,-3.39869 JoshRRC Josh Robins ,, ,,, 28552 Brecon_weir_aerial-4.jpg In progress The scheme, delivered by Natural Resources Wales’s (NRW) Four Rivers for LIFE Project, will see a new smolt (young salmon) pass installed in the weir. Brecon Weir is currently recognised as a significant obstruction to young salmon migrating downstream on their journey to the sea. Once completed, the new smolt pass will help young salmon and other fish species to move freely down the river. Recent fish tracking work has shown that Brecon Weir can significantly delay salmon smolts on their downstream migration in the spring, especially in low flows, making them more vulnerable to disease and predation. Accumulations of smolts have been observed around the weir during spring low flows. A new smolt pass will be installed in the face of the weir which will improve the hydraulics and flow velocities for fish passing the weir. The design will include a u-shaped notch, a bell mouth pass entrance, and an approach ramp. Brecon Weir Modification brecon weir modification Fisheries Urban 2025-07-07T14:31:27Z 2460864.1051736 2025-07-24T12:54:38Z 2460881.0379398 Brecon Weir Modification