Nant Onneu is a small upland stream in Wales with a typical character of clear, fast-flowing water over rocky substrate. This intimate river offers a rewarding experience for anglers seeking wild brown trout in a picturesque mountain setting, though the diminished flows during summer months can concentrate fish in deeper pools.
Anglers should note the close season on Nant Onneu: 15 March – 15 June (rivers, England & Wales). Club membership or day ticket access is required in addition to your EA rod licence on most stretches.
Water level data from the Environment Agency Real Time Flood Monitoring API. Nearest gauging station. Always verify conditions on arrival.
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Nant Onneu holds brown trout, sea trout, dace, stone loach.
An EA rod licence is required by law to fish Nant Onneu. Club membership or a day ticket is also required on most stretches.
To fish Nant Onneu, 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 Nant Onneu.
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 Nant Onneu.
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