Stillwater · Ordovician Volcanics · Wales / Snowdonia (Blaenau Ffestiniog uplands)

Llynnoedd Gamallt

Upland lake (Llyn Gamallt Fawr) in Snowdonia with a rocky crag rising behind the far shore.

Gamallt Fawr and Bach are two lakes joined at the hip and, by the club's own reckoning, the jewels of the whole portfolio — a reputation the stock actually backs up.

Fair · Trout
Marabou Damsel · 8-12
Fairlive now
Good drifting conditions on Llynnoedd Gamallt
Good wave on — drift country. A useful wave. Work the productive shore.
51% confidence

Llynnoedd Gamallt is often best in spring through autumn.

What moved it
  • WindSW 10 km/hLight breeze
Today's fly
Marabou Damsel
Marabou Damsel8-12
Retrieve, sub-surface
Conditions on the water
Live gauge
Wind
Light breeze
SW 10 km/h
N
SW
from the south-west
Wave20 cm ripple
Water temp
Air temp17°C
CloudOvercast
Pressure1021 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. Keep a sedge-style dry or emerger on a short leader for the evening rise.
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. Keep a sedge-style dry or emerger on a short leader for the evening rise.

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.

Bank

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

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 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 Cambrian Angling AssociationAccess varies
Two linked lakes (Fawr and Bach) regarded as the jewels of the Cambrian AA portfolio, with a strong wild brown trout stock; covered by the club's single day ticket across the whole llyn portfolio.
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What's coming
Plan ahead
5-day outlook
Condition match
85%
Cloud50%
Wind100%
Temp100%

Conditions are ideal for Llynnoedd Gamallt — wind, cloud and temperature all line up.

Other water nearby · 5
Gallery · 2
  1. Upland lake (Llyn Gamallt Fawr) in Snowdonia with a rocky crag rising behind the far shore.
    The shoreline of the eastern Llyn Gamallt
  2. Terrain map of the venue
    Terrain map
About this water

Gamallt Fawr and Bach are two lakes joined at the hip and, by the club's own reckoning, the jewels of the whole portfolio — a reputation the stock actually backs up. It's the strongest water in this book by most accounts, and Cambrian AA protect it accordingly with a three-fish bag limit, an unusual restriction for a portfolio otherwise run on fairly relaxed terms. Fish the linking narrows between the two pools when you can, and don't be surprised if this ends up the water you keep coming back to. Premium reputations get earned around here, not handed out, and Gamallt has clearly earned this one.

  • Lake
  • Ordovician volcanics
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Temperature (cool) is in the sweet spot for summer fishing.
  • Daddy Longlegs are in their seasonal window, boosting the chance of targeted feeding.
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