Stillwater · Ordovician Volcanics Sediment · Wales / Snowdonia (Carneddau)

Llyn Coedty (Coedty Reservoir)

Llyn Coedty reservoir seen from the track running towards Moel Eilio, near Dolgarrog
Fair · Trout
Diawl Bach · 12-14
Fairlive now
Reasonable summer fishing likely at Llyn Coedty (Coedty Reservoir)
Good wave on — drift country. A useful wave. Work the productive shore.
55% 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 temp14°C
CloudBroken
Pressure1023 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
Start with Diawl Bach (12-14) — on the bob / top dropper. Early in the day, nymphs and buzzers fished slowly tend to outperform attractors.
The plan
Plan A

Start with Diawl Bach (12-14) — on the bob / top dropper. Early in the day, nymphs and buzzers fished slowly tend to outperform attractors.

Plan B

Fish early and late, try deeper during the heat of the day with a fast-sinking line.

Watch for

Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.

Either bank or boat

Good ripple suits both bank and boat. Bank: work inflows, dam walls, and points. Boat: broadside drift covering wind lanes.

Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read with Pro.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 5 with Pro.

Start free trial

14-day free trial. Cancel anytime.

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
12-acre balance-tip hydro reservoir below Llyn Eigiau — wild brown trout.
What's coming
Plan ahead
5-day outlook
Condition match
88%
Cloud100%
Wind100%
Temp60%

Conditions are ideal for Llyn Coedty (Coedty Reservoir) — wind, cloud and temperature all line up.

Other water nearby · 5
Llyn Eigiau
4.0 km
Brown trout · Arctic char
Llyn Dulyn
5.0 km
Brown trout · Arctic char
Llyn Melynllyn
5.0 km
Brown trout
Llyn Crafnant
6.0 km
Brown trout · Rainbow trout
Llyn Bychan
7.0 km
Brown trout
Gallery · 2
  1. Llyn Coedty reservoir seen from the track running towards Moel Eilio, near Dolgarrog
    Llyn Coedty (Coedty Reservoir), near Dolgarrog, Conwy
  2. Terrain map of the venue
    Terrain map
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Cloud cover (cloud) suits the fishery well.
  • Murrough is in its seasonal window, boosting the chance of targeted feeding.
Related guides
Scotland Playbookloch & river fishingThermal Layers & Troutreading depth and temperatureEuro Nymphingsubsurface methods
Booking & contacts