Stillwater · Ordovician Volcanics · Wales / Snowdonia (Carneddau)

Llyn Melynllyn

Llyn Melynllyn terrain map

The Yellow Lake — sister water to Dulyn beneath the cliffs of Foel Grach, six hundred and ten metres above sea level.

Marginal · Trout
Marabou Damsel · 8-12
A patient day, if you fancy it
Good wave on — drift country. Slow going — pick your moments and do not force it.
40% confidence
limited data

Llyn Melynllyn is often best in spring through autumn.

What moved it
  • WindW 10 km/hLight breeze
Today's fly
MD
Marabou Damsel8-12
Retrieve, sub-surface
Conditions on the water
Live gauge
Wind
Light breeze
W 10 km/h
N
W
from the west
Wave20 cm ripple
Water temp
Air temp22°C
CloudClear
Pressure1020 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

Watch for Sedge towards evening — this could be the best window of the day.

Bank

Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.

Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 5 with Pro.

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Through the year
0–3 scale · August 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
Bays & launches · 1
Day ticket via Fishing PassportAccess varies
'Yellow lake' — high Carneddau cwm reservoir at 610m.
Visit official site ↗
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
About this water

The Yellow Lake — sister water to Dulyn beneath the cliffs of Foel Grach, six hundred and ten metres above sea level. Seven and a half hectares of properly exposed mountain water with small but pretty wild brown trout to about two pounds. Bank only, two-fish limit. A long way from anywhere; pick your weather.

  • Lake
  • Ordovician volcanics
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Buzzers are in their seasonal window, boosting the chance of targeted feeding.
Related guides
Casting instructors near here
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