The Grwyne Fawr is a tributary of the Usk in Monmouthshire, Wales, flowing through rural countryside with a mix of faster rocky sections and slower pools. The river is home to wild brown trout and grayling, offering fly fishing opportunities in its upper reaches and coarse fishing lower down, though access can be restricted due to private ownership of much of the riparian land. Permits are typically required, and anglers should seek permission from local landowners or contact the Usk and Afon Taf Fishery Association.
The statutory close season on Grwyne Fawr runs 15 March – 15 June (rivers, England & Wales). No coarse fishing is permitted during this period. Beyond the rod licence, fishing rights on Grwyne Fawr are typically held by local angling clubs — check with the relevant club or day ticket provider before visiting.
Water level data from the Environment Agency Real Time Flood Monitoring API. Nearest gauging station. Always verify conditions on arrival.
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Grwyne Fawr holds brown trout, sea trout, grayling, dace, bullhead.
An EA rod licence is required by law to fish Grwyne Fawr. Club membership or a day ticket is also required on most stretches.
To fish Grwyne Fawr, you need a valid EA rod licence, available online from gov.uk. Annual, day and 8-day licences are available. In addition to the rod licence, you will need club membership or a day ticket from the controlling angling club or riparian owner for most stretches of Grwyne Fawr.
Always check conditions before you visit. Water quality, access and rules can change seasonally. The EA's Catchment Data Explorer provides up-to-date water quality information for Grwyne Fawr.
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