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.
A patient day, if you fancy it
Useful ripple, fishable wave. Take your time — read the water before you cast.
34% confidence — limited data
Live now
Conditions on the water
Trends shown where the gauge supports them
Wind
SW 32 km/h
Fresh breeze
Wave
60 cm wave
Water temp
—
No reading
Air temp
9°C
Cloud
Overcast
Pressure
990 hPa
Rain · 24h
0.0 mm
No rain
Some readings unavailable — check directly before fishing.
How to fish · for brown trout
The brief
When · where · method · kit
How to fish it · for brown trout
When
The buzzers are on. Sedge may also come into play as the day warms.
Where
Work Dry Fly on the bob and Terrestrial on the point.
Today's tactical plan
The plan
Plan A · Plan B · what to watch · bank or boat
The plan
Plan A
Work Dry Fly on the bob and Terrestrial 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 — at anchor
Windy conditions suit anchoring in productive areas rather than open-water drifting.
Hatches & runs
What's on, when
Twelve months at a glance
Through the year
0–3 scale · June highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Daddy Long LegsHatch
2
3
2
Murrough (Great Red Sedge)Hatch
1
2
1
Lake OliveHatch
1
2
2
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Today's fly · curated pack
Top pattern + the box
6 patterns from this venue's curated pack
Evidence
Why today scores what it does
The factors driving today's verdict
Why this score
- Wind conditions (windy) are not ideal for this water.
- Buzzers are in their seasonal window, boosting the chance of targeted feeding.
Access · 1
Check the current rules, permits and access before travelling.
Day ticket via Fishing PassportDolgarrog Fishing Club (via Fishing Passport)
Wild brown troutArctic char / torgochFlySpinBait
'Black lake' — 58m-deep glacial cwm reservoir at 580m. Wild brown trout and Arctic char. Very lightly fished. 2.8-mile walk in. Bank only. 2-fish limit.
Day ticket via Dolgarrog FC Passport listing. 2-fish bag. 2.8-mile walk in. Exposed mountain water; check weather. EA/NRW rod licence required.
Arrange access →About this water · Lough note · 4 min read
Llyn Dulyn · profile
Who this water suits
Strengths · watch-outs · best for
About this water
Llyn Dulyn, on the water
Field guide · contributor-editedLlyn Dulyn · about
What this water is
Background · character · contributors
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
Llyn Dulyn · directions
How to get to the water
Directions
Llyn Dulyn
The Black Lake — fifty-eight metres deep in a brooding glacial cwm beneath Garnedd Uchaf and Foel Grach, 580 metres above sea level.
Species
A patient day, if you fancy it
Useful ripple, fishable wave. Take your time — read the water before you cast.
34% confidence — limited data
Conditions
Wind
SW 32 km/h
Fresh breeze
Wave
60 cm wave
Water temp
—
No reading
Air temp
9°C
Cloud
Overcast
Pressure
990 hPa
Rain · 24h
0.0 mm
No rain
Some readings unavailable — check directly before fishing.
Condition match
41%
Cloud70%
Wind30%
Temp25%
Conditions are away from this venue's sweet spot — it usually fishes best in ripple wind with mixed skies.
How to fish it · for brown trout
When
The buzzers are on. Sedge may also come into play as the day warms.
Where
Work Dry Fly on the bob and Terrestrial on the point.
The plan
Plan A
Work Dry Fly on the bob and Terrestrial 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 — at anchor
Windy conditions suit anchoring in productive areas rather than open-water drifting.
Why this score
- Wind conditions (windy) are not ideal for this water.
- Buzzers are in their seasonal window, boosting the chance of targeted feeding.
Through the year
0–3 scale · June highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Daddy Long LegsHatch
2
3
2
Murrough (Great Red Sedge)Hatch
1
2
1
Lake OliveHatch
1
2
2
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Access · 1
Check the current rules, permits and access before travelling.
Day ticket via Fishing PassportDolgarrog Fishing Club (via Fishing Passport)
Wild brown troutArctic char / torgochFlySpinBait
'Black lake' — 58m-deep glacial cwm reservoir at 580m. Wild brown trout and Arctic char. Very lightly fished. 2.8-mile walk in. Bank only. 2-fish limit.
Day ticket via Dolgarrog FC Passport listing. 2-fish bag. 2.8-mile walk in. Exposed mountain water; check weather. EA/NRW rod licence required.
Arrange access →Directions
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
About this water · Lough note · 4 min read
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.
Other water nearby · 5