- Fly only
A westerly has held for two days, running warmer than the water (12°C air against 9°C water). Expect fish at the eastern end — the bank it is blowing into — where the drift piles food, colour and warmth together. This reads the upper water, though — a bottom bait at range feels it far less than a floater or a fish in the margins. Treat it as a tiebreaker between good swims rather than an override — features and angling pressure usually count for more.
Start with Daddy Long Legs (10-12) on a As per local method. If that does not produce, switch depth or speed before changing the pattern entirely.
A fry-imitating pattern stripped through the margins can save a blank in autumn.
Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.
Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 4 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Walk-in only — nearest car park is Blaen-y-Cwm, with a track following the Grwyne Fawr river up the valley to the reservoir.
A good match for Grwyne Fawr Reservoir — most conditions are close to what it fishes best in.
Grwyne Fawr Reservoir Terrain map
- Wind conditions (ripple) closely match what this water fishes best in.
- Buzzer is in its seasonal window, boosting the chance of targeted feeding.
- Reservoirs of this kind fish well at this time of year.
Grwyne Fawr Reservoir
A westerly has held for two days, running warmer than the water (12°C air against 9°C water). Expect fish at the eastern end — the bank it is blowing into — where the drift piles food, colour and warmth together. This reads the upper water, though — a bottom bait at range feels it far less than a floater or a fish in the margins. Treat it as a tiebreaker between good swims rather than an override — features and angling pressure usually count for more.
Start with Daddy Long Legs (10-12) on a As per local method. If that does not produce, switch depth or speed before changing the pattern entirely.
A fry-imitating pattern stripped through the margins can save a blank in autumn.
Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.
Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 4 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Walk-in only — nearest car park is Blaen-y-Cwm, with a track following the Grwyne Fawr river up the valley to the reservoir.
A good match for Grwyne Fawr Reservoir — most conditions are close to what it fishes best in.
Grwyne Fawr Reservoir Terrain map
- Wind conditions (ripple) closely match what this water fishes best in.
- Buzzer is in its seasonal window, boosting the chance of targeted feeding.
- Reservoirs of this kind fish well at this time of year.