Stillwater · Ordovician Volcanics · Wales / Snowdonia (Carneddau)

Llyn Dulyn

Llyn Dulyn — Snowdonia

The Black Lake — fifty-eight metres deep in a brooding glacial cwm beneath Garnedd Uchaf and Foel Grach, 580 metres above sea level.

Fair · Trout
Diawl Bach · 12-14
Fairlive now
Good drifting conditions on Llyn Dulyn
Good wave on — drift country. A useful wave. Work the productive shore.
52% confidence
What moved it
  • WindNW 7 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 7 km/h
N
NW
from the north-west
WaveRipple
Water temp
Air temp12°C
CloudBroken
Pressure1023 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for Trout
When
The buzzer is on. Murrough 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.
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

Top nymph shown — see all 2 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 4 with Pro.

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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
'Black lake' — 58m-deep glacial cwm reservoir at 580m.
What's coming
Plan ahead
5-day outlook
Condition match
88%
Cloud100%
Wind100%
Temp60%

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

Other water nearby · 5
Gallery · 2
  1. Llyn Dulyn — Snowdonia
    Snowdonia
  2. Terrain map of the venue
    Terrain map
About this water

The Black Lake — fifty-eight metres deep in a brooding glacial cwm beneath Garnedd Uchaf and Foel Grach, 580 metres above sea level. Thirteen hectares of cold, dark water holding wild brown trout and a tiny Arctic char population. Very lightly fished — two and three-quarter miles' walk in keeps it that way. Bank only, two-fish limit. The kind of place where you stop and notice you're being watched by a buzzard.

  • Lake
  • Ordovician volcanics
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Cloud cover (cloud) suits the fishery well.
  • Buzzer is in its seasonal window, boosting the chance of targeted feeding.
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