Two small natural lakes owned by the National Trust, set at the foot of Cadair Idris in the southern Snowdonia National Park near Dolgellau. The setting — open mountain lake, wide sky, and the presence of the mountain — is as much the point as the fishing. Wild and stocked trout in low-nutrient upland water, typical of the Ordovician volcanic and mudstone geology of Cadair Idris. The car park is reached via a narrow road from Arthog; access and stocking arrangements vary by season.
A respectable few hours, if you choose your moments
Good wave on — drift country. A useful wave. Work the productive shore.
46% confidence — limited data
Live now
Conditions on the water
Trends shown where the gauge supports them
Wind
W 11 km/h
Light breeze
Wave
20 cm ripple
Water temp
—
No reading
Air temp
6°C
Cloud
Broken
Pressure
—
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
No strong hatch signals at the moment — general searching tactics should work best. Drift conditions look good — cover the wind lanes.
Where
Set up a broadside drift and cover the water systematically. Work Dry Fly on the bob and Emerger on the point. When no hatch is visible, a buzzer team — black stripped quill on the point, attractor or pearl-rib on the top dropper — is the default starting point on any UK stillwater.
Method
Method not yet authored.
Kit
Kit not yet authored.
Today's tactical plan
The plan
Plan A · Plan B · what to watch · bank or boat
The plan
Plan A
Set up a broadside drift and cover the water systematically. Work Dry Fly on the bob and Emerger on the point. When no hatch is visible, a buzzer team — black stripped quill on the point, attractor or pearl-rib on the top dropper — is the default starting point on any UK stillwater.
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
Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.
Boat — drift
A gentle ripple is ideal for drifting — broadside drift covering the wind lanes should be productive.
Hatches & runs
What's on, when
Twelve months at a glance
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Large Dark OliveHatch
1
2
2
1
March BrownHatch
1
2
1
Iron BlueHatch
1
2
2
1
Blue Winged OliveHatch
1
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
5 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 (ripple) closely match what this water fishes best in.
- Cloud cover (mixed) suits the fishery well.
Detail · next 12h
Precipitation
The reading most likely to move tomorrow's verdict
About this water · Lough note · 4 min read
Cregennan Lakes · profile
Who this water suits
Strengths · watch-outs · best for
About this water
Cregennan Lakes, on the water
Field guide · contributor-editedCregennan Lakes · about
What this water is
Background · character · contributors
About this water
Two small natural lakes owned by the National Trust, set at the foot of Cadair Idris in the southern Snowdonia National Park near Dolgellau. The setting — open mountain lake, wide sky, and the presence of the mountain — is as much the point as the fishing. Wild and stocked trout in low-nutrient upland water, typical of the Ordovician volcanic and mudstone geology of Cadair Idris. The car park is reached via a narrow road from Arthog; access and stocking arrangements vary by season.
- Lake
- Volcanic
Cregennan Lakes · directions
How to get to the water
Directions
Cregennan Lakes
No photos yet for this water.
Two small natural lakes owned by the National Trust, set at the foot of Cadair Idris in the southern Snowdonia National Park near Dolgellau.
Species
A respectable few hours, if you choose your moments
Good wave on — drift country. A useful wave. Work the productive shore.
46% confidence — limited data
Conditions
Wind
W 11 km/h
Light breeze
Wave
20 cm ripple
Water temp
—
No reading
Air temp
6°C
Cloud
Broken
Pressure
—
Rain · 24h
0.0 mm
No rain
Some readings unavailable — check directly before fishing.
Condition match
77%
Cloud100%
Wind100%
Temp25%
A good match for this venue — most conditions are close to what it fishes best in.
How to fish it · for brown trout
When
No strong hatch signals at the moment — general searching tactics should work best. Drift conditions look good — cover the wind lanes.
Where
Set up a broadside drift and cover the water systematically. Work Dry Fly on the bob and Emerger on the point. When no hatch is visible, a buzzer team — black stripped quill on the point, attractor or pearl-rib on the top dropper — is the default starting point on any UK stillwater.
Method
Method not yet authored.
Kit
Kit not yet authored.
The plan
Plan A
Set up a broadside drift and cover the water systematically. Work Dry Fly on the bob and Emerger on the point. When no hatch is visible, a buzzer team — black stripped quill on the point, attractor or pearl-rib on the top dropper — is the default starting point on any UK stillwater.
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
Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.
Boat — drift
A gentle ripple is ideal for drifting — broadside drift covering the wind lanes should be productive.
Why this score
- Wind conditions (ripple) closely match what this water fishes best in.
- Cloud cover (mixed) suits the fishery well.
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Large Dark OliveHatch
1
2
2
1
March BrownHatch
1
2
1
Iron BlueHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Directions
About this water
Two small natural lakes owned by the National Trust, set at the foot of Cadair Idris in the southern Snowdonia National Park near Dolgellau. The setting — open mountain lake, wide sky, and the presence of the mountain — is as much the point as the fishing. Wild and stocked trout in low-nutrient upland water, typical of the Ordovician volcanic and mudstone geology of Cadair Idris. The car park is reached via a narrow road from Arthog; access and stocking arrangements vary by season.
- Lake
- Volcanic
About this water · Lough note · 4 min read
Two small natural lakes owned by the National Trust, set at the foot of Cadair Idris in the southern Snowdonia National Park near Dolgellau. The setting — open mountain lake, wide sky, and the presence of the mountain — is as much the point as the fishing. Wild and stocked trout in low-nutrient upland water, typical of the Ordovician volcanic and mudstone geology of Cadair Idris. The car park is reached via a narrow road from Arthog; access and stocking arrangements vary by season.
Other water nearby · 5