Stillwater · Ordovician Volcanics Sediment · Wales / Snowdonia (Carneddau)

Llyn Eigiau

Llyn Eigiau venue image

Eigiau is the famous one for the wrong reasons — the dam burst in 1925, killed sixteen people in Dolgarrog below, and a hundred years on the lake remains shallow and broad rather than the deep impoundment it used to be.

Fair · Trout
Diawl Bach · 12-14
Fairlive now
Silverhorn evening rise expected on Llyn Eigiau
Good wave on — drift country. A useful wave. Work the productive shore.
55% confidence
What moved it
  • WindN 8 km/hLight breeze
Today's fly
Diawl Bach
Diawl Bach12-14
Washing-line, sub-surface
Conditions on the water
Live gauge
Wind
Light breeze
N 8 km/h
N
N
from the north
WaveRipple
Water temp
Air temp14°C
CloudClear
Pressure1023 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for Trout
When
The murrough is on. Damsel Nymph may also come into play as the day warms. The ripple is helpful — fish should move onto the feed and a slow-drifted team or single wet will cover water well. Dusk on the lake is prime time for surface feeding — stay out as long as light allows.
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

Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.

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
120-acre Carneddau lake — wild brown trout plus relict Arctic char.
What's coming
Plan ahead
5-day outlook
Condition match
66%
Cloud25%
Wind100%
Temp60%

A reasonable day here, though cloud isn't quite in the sweet spot.

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

Eigiau is the famous one for the wrong reasons — the dam burst in 1925, killed sixteen people in Dolgarrog below, and a hundred years on the lake remains shallow and broad rather than the deep impoundment it used to be. Forty-nine hectares of wild brown trout in shadow of Pen Llithrig y Wrach, plus a small relict Arctic char population (transferred from Llyn Peris before the burst). Roughly a mile and a quarter's walk in. Bank only, two-fish limit.

  • Lake
  • Ordovician volcanics sediment
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Murrough is in its seasonal window, boosting the chance of targeted feeding.
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