Start with Coch-y-Bonddu Beetle (10-14) — on the bob / top dropper. Early in the day, try buzzers on a slow figure-of-eight or a booby on a fast-sink line near the bottom. Rainbows respond to more active retrieves — try short strips between pauses.
Fish early and late, try deeper during the heat of the day with a fast-sinking line.
Watch for Sedge towards evening — this could be the best window of the day.
Good ripple suits both bank and boat. Bank: work inflows, dam walls, and points. Boat: broadside drift covering wind lanes.
Hatch predictions
Top prey shown — see all 3 with Pro.
Start free trial14-day free trial. Cancel anytime.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Traditional wild-trout llyn fishing. Wet flies and dabblers stay central, with buzzer, caddis, terrestrials and occasional small fry patterns becoming important as the season warms.
A reasonable day here, though temperature isn't quite in the sweet spot.
434-acre lowland reservoir near Pontypool. Stocked rainbow and brown trout fishery with boat and bank access. This location also provides access to the Usk River section that feeds the reservoir — managed via fishingpassport.co.uk. Lower altitude than Brenig/Clywedog — warmer, longer season. Good all-round stillwater with buzzer, damsel and lure fishing all productive. Visitor centre and cafe.
NRW WFD Cycle 3 (lake) — Llandegfedd Reservoir: Moderate ecological status. Re-tagged 2026-06-18 from a river reach to the reservoir's own lake waterbody (was recorded Good). Source: NRW DataMapWales WFD Cycle 3 classification layer.
NRW (Wales) · GB30941363
434-acre lowland reservoir near Pontypool.
Start with Coch-y-Bonddu Beetle (10-14) — on the bob / top dropper. Early in the day, try buzzers on a slow figure-of-eight or a booby on a fast-sink line near the bottom. Rainbows respond to more active retrieves — try short strips between pauses.
Fish early and late, try deeper during the heat of the day with a fast-sinking line.
Watch for Sedge towards evening — this could be the best window of the day.
Good ripple suits both bank and boat. Bank: work inflows, dam walls, and points. Boat: broadside drift covering wind lanes.
Hatch predictions
Top prey shown — see all 3 with Pro.
Start free trial14-day free trial. Cancel anytime.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Traditional wild-trout llyn fishing. Wet flies and dabblers stay central, with buzzer, caddis, terrestrials and occasional small fry patterns becoming important as the season warms.
A reasonable day here, though temperature isn't quite in the sweet spot.
434-acre lowland reservoir near Pontypool. Stocked rainbow and brown trout fishery with boat and bank access. This location also provides access to the Usk River section that feeds the reservoir — managed via fishingpassport.co.uk. Lower altitude than Brenig/Clywedog — warmer, longer season. Good all-round stillwater with buzzer, damsel and lure fishing all productive. Visitor centre and cafe.
NRW WFD Cycle 3 (lake) — Llandegfedd Reservoir: Moderate ecological status. Re-tagged 2026-06-18 from a river reach to the reservoir's own lake waterbody (was recorded Good). Source: NRW DataMapWales WFD Cycle 3 classification layer.
NRW (Wales) · GB30941363
