Stillwater · Silurian Mudstone Shale · Wales / Cambrian Mountains (Rheidol)

Cwm Rheidol Reservoir

Cwm Rheidol Reservoir — Vale of Rheidol 260714_34
Fair · Trout
Marabou Damsel · 8-12
Fairlive now
Reasonable summer fishing likely at Cwm Rheidol Reservoir
Good wave on — drift country. A useful wave. Work the productive shore.
60% confidence

Cwm Rheidol Reservoir is often best in spring through autumn.

What moved it
  • WindW 11 km/hLight breeze
Today's fly
Marabou Damsel
Marabou Damsel8-12
Retrieve, sub-surface
Conditions on the water
Live gauge
Wind
Light breeze
W 11 km/h
N
W
from the west
Wave20 cm ripple
Water temp—
Air temp20°C
CloudOvercast
Pressure1020 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for Trout
When
Late April–June; evening rises through summer
Where
Start with Marabou Damsel (8-12) — on the point. If that does not produce, switch depth or speed before changing the pattern entirely.
The plan
Plan A

Start with Marabou Damsel (8-12) — on the point. If that does not produce, switch depth or speed before changing the pattern entirely.

Plan B

Fish early and late, try deeper during the heat of the day with a fast-sinking line.

Watch for

Buzzer may strengthen through the middle of the day as conditions warm.

Bank

Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.

Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 5 with Pro.

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Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Daddy Long LegsHatch
2
3
2
Murrough (Great Red Sedge)Hatch
2
3
2
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Lake OliveHatch
1
2
2
2
2
2
1

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Trout fly box
Bays & launches · 1
Day ticket via Fishing PassportAccess varies
Aberystwyth AA's largest water — a 25-hectare hydro reservoir on the Rheidol holding wild brown trout, with occasional sewin and salmon working up from the estuary.
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What's coming
Plan ahead
5-day outlook
Condition match
73%
Cloud50%
Wind100%
Temp60%

A good match for Cwm Rheidol Reservoir — most conditions are close to what it fishes best in.

Other water nearby · 5
Llyn-yr-Oerfa
3.0 km
Brown trout
Pond Rhosrydd
3.0 km
Brown trout
Llyn Rhosgoch
4.0 km
Brown trout
Pond Glandwgan
4.0 km
Brown trout
Llyn Blaenmelindwr
5.0 km
Brown trout
Gallery · 2
  1. Cwm Rheidol Reservoir — Vale of Rheidol 260714_34
    Vale of Rheidol 260714_34
  2. Terrain map of the venue
    Terrain map
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Buzzer is in its seasonal window, boosting the chance of targeted feeding.
Directions
Apple MapsGoogle Maps
Seasons & zones

Sea trout: Variable seasonal (2026)

Related guides
Scotland Playbookloch & river fishingThermal Layers & Troutreading depth and temperatureAtlantic Salmonsalmon tactics
Casting instructors near here
Booking & contacts