A southerly has held for 9 hours, running colder than the water (3°C air against 8°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.
Start with Perch Fry (8–10 long shank) — on the point. If that does not produce, switch depth or speed before changing the pattern entirely.
Slow down everything. A booby on a fast-sinking line, left static, can pick up deep fish.
Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.
Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.
Hatch predictions
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Hatch predictions
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Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Fly recommendations
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A good match for Altnahinch Reservoir — most conditions are close to what it fishes best in.
It is a classic shore-fishing reservoir in rougher country rather than an easy-access stocked park lake. The official DAERA material explicitly points anglers towards small attractor wets such as Bibio and Peter Ross, which tells you a lot about the venue's practical character.
Altnahinch sits in exposed peaty moorland at the head of the Bush system.
A southerly has held for 9 hours, running colder than the water (3°C air against 8°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.
Start with Perch Fry (8–10 long shank) — on the point. If that does not produce, switch depth or speed before changing the pattern entirely.
Slow down everything. A booby on a fast-sinking line, left static, can pick up deep fish.
Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.
Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.
Hatch predictions
Top nymph shown — see all 2 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Hatch predictions
Top prey shown — see all 4 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Fly recommendations
Point fly shown — supporters see the whole team, sizes and why.
Start free trial14-day free trial. Cancel anytime.
A good match for Altnahinch Reservoir — most conditions are close to what it fishes best in.
It is a classic shore-fishing reservoir in rougher country rather than an easy-access stocked park lake. The official DAERA material explicitly points anglers towards small attractor wets such as Bibio and Peter Ross, which tells you a lot about the venue's practical character.
Altnahinch Reservoir is a reservoir in Co. Antrim / head of the Bush catchment, Northern Ireland. Its recorded elevation is about 243 m above sea level and the catchment geology is peat. The species listed for this water is brown trout. The trout season is recorded as running from 1 March to 31 October. Best window recorded for anglers: April–September. Core methods listed: shore wet-fly fishing; small lure fishing in broken water; simple nymph and dry work in warmer spells. Nearby waters in our listings include Dungonnell Reservoir at 9.0 km, Bann Valley Fishery at 19 km and Bann Valley Fishery at 19 km.
