Stillwater · Ordovician Silurian Mudstone · Wales / Cambrian Mountains (Plynlimon)

Llyn Llygad Rheidol

Llyn Llygad Rheidol Reservoir venue image

The highest of the Aberystwyth AA waters — five hundred metres up in a glacial cwm on the north flank of Plynlimon, source of the Rheidol itself.

Fair · Trout
Diawl Bach · 12-14
Fairlive now
Damsel Nymph expected on Llyn Llygad Rheidol
Good wave on — drift country. A useful wave. Work the productive shore.
54% confidence
What moved it
  • WindNW 10 km/hLight breeze
Today's fly
Diawl Bach
Diawl Bach12-14
Washing-line, sub-surface
Conditions on the water
Live gauge
Wind
Light breeze
NW 10 km/h
N
NW
from the north-west
WaveRipple
Water temp
Air temp17°C
CloudBroken
Pressure1021 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
Set up a broadside drift and cover the water systematically. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.
The plan
Plan A

Set up a broadside drift and cover the water systematically. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.

Plan B

If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. A change of drift angle can also make a difference.

Watch for

Welshman's Button should come on through the afternoon as the water warms.

Boat — drift

A gentle ripple is ideal for drifting — broadside drift covering the wind lanes should be productive.

Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey

Hatch predictions

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Through the year
0–3 scale · July 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
Gammarus Scud (Olive)
Gammarus Scud (Olive)
10-14 · Gammarus Scud
Washing-line, sub-surface
Bays & launches · 1
Day ticket via Fishing PassportAccess varies
Highest of the Aberystwyth AA waters — 500m glacial cwm on Plynlimon, source of the Rheidol.
What's coming
Plan ahead
5-day outlook
Condition match
100%
Cloud100%
Wind100%
Temp100%

Conditions are ideal for Llyn Llygad Rheidol — wind, cloud and temperature all line up.

Other water nearby · 5
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

The highest of the Aberystwyth AA waters — five hundred metres up in a glacial cwm on the north flank of Plynlimon, source of the Rheidol itself. Eight hectares of properly remote water with no tarmac access; you walk in. Truly wild brown trout, small and dark from the peat-stained water, and the kind of silence you have to climb for. Bring weather gear.

  • Lake
  • Ordovician silurian mudstone
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Cloud cover (cloud) suits the fishery well.
  • Temperature (cool) is in the sweet spot for summer fishing.
  • Damsel Nymph is in its seasonal window, boosting the chance of targeted feeding.
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