- Ecology: Good
- Chemical: Unknown
NRW (Wales) · UKGB110064048350
Rules at a glance
- Fly only
How to fish it · for Rainbow
When
Current conditions suit Elan Valley (Rhayader) well for autumn tactics.
Where
Start with Cormorant (10–12) — 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. The gusts make a boat hard to hold — anchor in the lee or fish the sheltered bank.
The plan
Plan A
Start with Cormorant (10–12) — 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. The gusts make a boat hard to hold — anchor in the lee or fish the sheltered bank.
Plan B
A fry-imitating pattern stripped through the margins can save a blank in autumn.
Watch for
Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.
Bank, sheltered shores
In wind, bank fish the lee shore — boats can anchor in productive areas if conditions allow.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 3 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 5 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
1
Reservoir BuzzerHatch
2
3
3
3
3
3
2
Daphnia SwarmHatch
2
3
3
3
2
Lake OliveHatch
2
3
3
3
3
3
2
Silverhorns & LonghornsHatch
1
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Buzzer team todayfor the conditions now
Point#10
Black buzzer, orange thorax
Not in this water's box
How to fish it
Intermediate line · let the breeze drift the team, then hang it 15–30 s
Fly recommendations
Point fly shown — supporters see the whole team, sizes and why.
Start free trial14-day free trial. Cancel anytime.
Ranked for today
Fly box · Rainbow
What's coming
Plan ahead
5-day outlook
Condition match
72%
Cloud100%
Wind30%
Temp100%
A good match for Elan Valley (Rhayader) — most conditions are close to what it fishes best in.
Other water nearby · 5
Gallery · 2
Claerwen Reservoir and mountains Terrain map
Water quality (WFD)
Why this score
- Wind conditions (windy) are not ideal for this water.
- Cloud cover (cloud) suits the fishery well.
- Temperature (cool) is in the sweet spot for autumn fishing.
- Buzzer is in its seasonal window, boosting the chance of targeted feeding.
- Reservoirs of this kind fish hard at this time of year.
Directions
Seasons & zones
- Trout 15 March → 5 October
Related guides
Casting instructors near here
Booking & contacts
Boards & regulators
Elan Valley (Rhayader)
How to fish it · for Rainbow
When
Current conditions suit Elan Valley (Rhayader) well for autumn tactics.
Where
Start with Cormorant (10–12) — 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. The gusts make a boat hard to hold — anchor in the lee or fish the sheltered bank.
The plan
Plan A
Start with Cormorant (10–12) — 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. The gusts make a boat hard to hold — anchor in the lee or fish the sheltered bank.
Plan B
A fry-imitating pattern stripped through the margins can save a blank in autumn.
Watch for
Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.
Bank, sheltered shores
In wind, bank fish the lee shore — boats can anchor in productive areas if conditions allow.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 3 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 5 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
1
Reservoir BuzzerHatch
2
3
3
3
3
3
2
Daphnia SwarmHatch
2
3
3
3
2
Lake OliveHatch
2
3
3
3
3
3
2
Silverhorns & LonghornsHatch
1
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Buzzer team todayfor the conditions now
Point#10
Black buzzer, orange thorax
Not in this water's box
How to fish it
Intermediate line · let the breeze drift the team, then hang it 15–30 s
Fly recommendations
Point fly shown — supporters see the whole team, sizes and why.
Start free trial14-day free trial. Cancel anytime.
Ranked for today
Fly box · Rainbow
What's coming
Plan ahead
5-day outlook
Condition match
72%
Cloud100%
Wind30%
Temp100%
A good match for Elan Valley (Rhayader) — most conditions are close to what it fishes best in.
Other water nearby · 5
Gallery · 2
Claerwen Reservoir and mountains Terrain map
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
NRW (Wales) · UKGB110064048350
Why this score
- Wind conditions (windy) are not ideal for this water.
- Cloud cover (cloud) suits the fishery well.
- Temperature (cool) is in the sweet spot for autumn fishing.
- Buzzer is in its seasonal window, boosting the chance of targeted feeding.
- Reservoirs of this kind fish hard at this time of year.
Directions
Seasons & zones
- Trout 15 March → 5 October
Related guides
Casting instructors near here
Booking & contacts
Boards & regulators