Stillwater · Volcanic · County Londonderry, GB-NIR

Duncrun Fly Fishing Trout Lakes

Duncrun Fly Fishing Trout Lakes Northern Ireland NI venue image

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
Fairlive now
Reasonable winter fishing likely at Duncrun Fly Fishing Trout Lakes
Useful ripple, fishable wave. Worth a session if the wind holds.
57% confidence

Duncrun Fly Fishing Trout Lakes is often best in spring through autumn.

What moved it
  • WindW 18 km/hGentle breeze · Gusts to 23 km/h
Today's fly
BB
Black Buzzer #10-1210–14
Static or slow on a long leader — the staple stillwater chironomid.
Conditions on the water
Estimate
Wind
Gentle breeze · Gusts to 23 km/h
W 18 km/h
N
W
from the west
Wave40 cm chop
Water temp9.6°C
Air temp6°C
CloudOvercast
Pressure1017 hPa
Rain · recent0.0 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Head to
Wind driftS wind
Southern end

A southerly has held for 6 hours, running colder than the water (4°C air against 10°C water). The end it blows into is taking that chilled surface water, so try the sheltered southern end instead — off the back of the wind, where the undertow returns food along the bottom. That chill sits in the top of the water, though, and the bed is slower to feel it — on a bottom bait it is the undertow, not the temperature, that puts you at this end. Treat it as a tiebreaker between good swims rather than an override — features and angling pressure usually count for more.

How to fish it · for Rainbow
When
Overcast days with a light ripple, cool water; sheltered enough to fish in wind
Where
Start with Black Buzzer (10-12) on a slow, natural presentation — check locally for the preferred method. Rainbows respond to more active retrieves — try short strips between pauses. If that does not produce, switch depth or speed before changing the pattern entirely.
The plan
Plan A

Start with Black Buzzer (10-12) on a slow, natural presentation — check locally for the preferred method. Rainbows respond to more active retrieves — try short strips between pauses. If that does not produce, switch depth or speed before changing the pattern entirely.

Plan B

Slow down everything. A booby on a fast-sinking line, left static, can pick up deep fish.

Watch for

Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.

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 as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 5 as a supporter.

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Through the year
0–3 scale · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Reservoir BuzzerHatch
2
3
3
3
3
3
2
Daphnia SwarmHatch
2
3
3
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.

Buzzer team todayfor the conditions now
Point
Black buzzer, orange thorax
Not in this water's box
#10
How to fish it
Intermediate line · let the breeze drift the team, then hang it 15–30 s

Fly recommendations

Point fly shown — supporters see the whole team, sizes and why.

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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
59%
Cloud50%
Wind65%
Temp60%

A reasonable day here, though cloud isn't quite in the sweet spot.

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

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
  • winter conditions with overcast skies and breezy wind.
Related guides
Irish Loughs Playbooklough-style fishingSmall Stillwater Playbookstillwater tacticsFly Fishing for Beginnersnew to fly fishing? start here
Casting instructors near here
Booking & contacts
Permits & access
At a glance

Duncrun Fly Fishing Trout Lakes is a stillwater fishery in County Londonderry, Northern Ireland. The catchment geology is recorded as volcanic, and the water sits at about 15 m above sea level. The species listed for this water is rainbow trout. Best window recorded for anglers: Overcast days with a light ripple, cool water; sheltered enough to fish in wind. Core methods listed: Slow buzzers on a floating line; Diawl bach and cruncher teams; Damsel stripped along the weed margins. Nearby waters in our listings include Cashel Lake View Trout Fishery at 25 km, Bann Valley Fishery at 27 km and Bann Valley Fishery at 27 km.