Stillwater · Volcanic · County Londonderry

Duncrun Fly Fishing Trout Lakes

Duncrun Fly Fishing Trout Lakes Northern Ireland NI venue image
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Duncrun is woodland fly water in County Londonderry, the sort of place that settles in well once you've fished it a couple of times and learned where the fish like to sit.

Fair · Rainbow
Black Buzzer #10-12 · 10–14
A respectable few hours, if you choose your moments
Useful ripple, fishable wave. Worth a session if the wind holds.
45% confidence
limited data
What moved it
  • WindS 34 km/hFresh breeze
Today’s fly
BB
Black Buzzer #10-1210–14
Static or slow on a long leader — the staple stillwater chironomid.
Conditions on the water
Live gauge
Wind
Fresh breeze
S 34 km/h
N
S
from the south
Wave60 cm wave
Water temp—
Air temp19°C
CloudOvercast
Pressure1005 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for rainbow
When
Overcast days with a light ripple, cool water; sheltered enough to fish in wind
Where
Start with Diawl Bach (12-14) — on the bob / top dropper — slow figure-of-eight retrieve. As evening approaches, switch to dries or emergers if you see surface activity.
The plan
Plan A

Start with Diawl Bach (12-14) — on the bob / top dropper — slow figure-of-eight retrieve. As evening approaches, switch to dries or emergers if you see surface activity.

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.

Bank

Bank fishing near inflows, dam walls, and weed beds. Move to find feeding fish.

Through the year
0–3 scale · June highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Daphnia SwarmHatch
2
3
3
3
2
Daddy Long LegsHatch
2
3
2
Lake OliveHatch
2
3
3
3
3
3
2
Silverhorns & LonghornsHatch
1
2
2
2
1

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Rainbow fly box
BB
Black Buzzer #10-12Top
10–14 · Buzzer
Static or slow on a long leader — the staple stillwater chironomid.
HE
Hares Ear Nymph #12
14–16 · Nymph
Search the runs and pockets, dead-drift near the bottom.
DB
Diawl Bach #12
10–14 · Nymph
On a team, slow retrieve through the top few feet.
OD
Olive Damsel #10
8–10 · Damsel
Slow figure-of-eight through weed margins in summer.
CO
Cormorant or small lure #10
10–14 · Nymph
On a team, slow retrieve through the top few feet.
CE
CDC Emerger #14
12–16 · Fly
A dependable searching pattern for these waters.
What's coming
Plan ahead
5-day outlook
Condition match
45%
Cloud50%
Wind30%
Temp60%

Conditions are away from this venue's sweet spot — it usually fishes best in ripple wind with cloud skies.

Other water nearby · 5
Cashel Lake View Trout Fishery
25 km
Trout
Bann Valley Fishery
27 km
Trout
Ballyheather Trout Fishery
40 km
Trout
Altnahinch Reservoir
45 km
Brown trout
Lough Fern
50 km
Brown trout
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

Duncrun is woodland fly water in County Londonderry, the sort of place that settles in well once you've fished it a couple of times and learned where the fish like to sit. The lakes lie over volcanic ground, sheltered by trees, which takes the sting out of a brisk day and gives you somewhere to fish when the wind is up. It rewards a fly-focused approach — buzzers worked slowly through the cool water, a diawl bach team as spring warms along, a damsel pulled past the weed in summer. On a soft grey day with a touch of ripple the rainbows feed with confidence; on a hard bright one they drop away and you fish deeper and slower for them. Honest sport in a quiet corner that gets better the more you understand it.

  • Fishery
  • Volcanic
Why this score
  • Wind conditions (windy) are not ideal for this water.
  • Terrestrials are in their seasonal window, boosting the chance of targeted feeding.
Related guides
Irish Loughs Playbooklough-style fishingSmall Stillwater Playbookstillwater tacticsThermal Layers & Troutreading depth and temperature
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