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The Merddwr is a small Welsh river characterized by clear, fast-flowing water over rocky substrate, typical of upland streams in the region. This intimate waterway offers good prospects for brown trout and native species in a largely undisturbed habitat, making it attractive to fly anglers seeking a quieter experience. Access is generally available along much of the river, though anglers should check with local landowners and confirm any permit requirements with the relevant Welsh water authority.
Merddwr observes the standard close season: 15 March – 15 June (rivers, England & Wales). Always check local byelaws before your visit. A rod licence alone does not grant access — most stretches require club membership or a day ticket in addition.
Water level data from the Environment Agency Real Time Flood Monitoring API. Nearest gauging station. Always verify conditions on arrival.
Merddwr holds brown trout, sea trout, grayling, bullhead.
An EA rod licence is required by law to fish Merddwr. Club membership or a day ticket is also required on most stretches.
To fish Merddwr, 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 Merddwr.
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 Merddwr.
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