Stoneflies
Caddisflies
Chironomids
Gammarids
- Ecology: Unknown
- Chemical: Unknown
Rules at a glance
- Free fishing
- Fly only
Water temperature for Atlantic Salmon
Warm — slow17°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Morning and evening are prime, but midday can still produce if there's cloud cover or a breeze to ruffle the surface. Overcast days fish well all day in summer.
Where
Work the classic drift lanes — from upwind shore across the productive zones. Cover the bay edges, underwater reefs, and any areas where the bottom shoals up. Keep the boat moving at drift speed and watch for fish following the fly.
Method
Lively swing near the surface. Floating line, the fly fishing in the top 12 inches. The fly should look alive — a small mend to accelerate at the right moment can trigger a snapping take.. Floating line. Small-medium: size 8-12. Match temperature and water colour — go smaller if clear, bigger if any colour.
Kit
10 ft #7/8 single-hander, floating line, 10–12 lb fluoro leader. Boat seat and waterproofs for the drift.
Why this works
Very few salmon are historically caught on this river in September (based on guide reports and fishery knowledge). Current conditions matter, but expectations should be modest. Conditions are reasonable, though not ideal. Late season — fish are beginning to colour up as spawning approaches. They become more territorial and can take aggressively. Autumnal colours (orange, copper, gold) work well.
Likely species
Caddisflies
- CapererMost likelyLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
- Net-spinning caddisAlso possibleLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- Large sedgesAlso possibleNearest relative#8–10 · AdultBig waked sedge in the last light and after dark.
Hatch timeline · todayPeak at 12h
12h(now) — Heather Fly
Stage: Terrestrials on topApproach: Dry flyActivity: 95%
Also:Daddy Long Legs52%Pond Olive29%
Peak emergence windowWeather boost9 food groups active
Peak activity at 12h — Heather Fly (Heather Fly, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 5 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
1
Sea trout runRun
1
2
1
Heather FlyHatch
2
2
Daddy Long LegsHatch
2
3
2
Claret DunHatch
2
3
2
Murrough (Great Red Sedge)Hatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Atlantic Salmon
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
- Day permits €25–35
- Catch-and-release for salmon
- Boats available.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Glenveagh National Park - geograph.org.uk - 51682 Terrain map
Water quality (WFD)
The full read · show the working · for Atlantic Salmon · confidence 75%
How the river scores — hydrology factors
Water heightMedium Ideal+2.3
Recent riseNone0.0
Falling after liftDropping Too Far Towards Low Clear+1.1
Water temperatureCool To Moderate+3.0
Time in seasonLate Season+0.5
ClarityClearing+2.4
Hydrology base9.3
Will they take?Willingcaps the band
Fish should be willing to take — clearing, stained water.
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
What would change the calculation
No prolonged stable spell before the current rise.
Directions
Seasons & zones
- Salmon 15 July → 30 SeptemberC&R
- Sea trout 15 July → 30 September
Related guides
Casting instructors near here
Booking & contacts
Lough Beagh
Water temperature for Atlantic Salmon
Warm — slow17°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Morning and evening are prime, but midday can still produce if there's cloud cover or a breeze to ruffle the surface. Overcast days fish well all day in summer.
Where
Work the classic drift lanes — from upwind shore across the productive zones. Cover the bay edges, underwater reefs, and any areas where the bottom shoals up. Keep the boat moving at drift speed and watch for fish following the fly.
Method
Lively swing near the surface. Floating line, the fly fishing in the top 12 inches. The fly should look alive — a small mend to accelerate at the right moment can trigger a snapping take.. Floating line. Small-medium: size 8-12. Match temperature and water colour — go smaller if clear, bigger if any colour.
Kit
10 ft #7/8 single-hander, floating line, 10–12 lb fluoro leader. Boat seat and waterproofs for the drift.
Why this works
Very few salmon are historically caught on this river in September (based on guide reports and fishery knowledge). Current conditions matter, but expectations should be modest. Conditions are reasonable, though not ideal. Late season — fish are beginning to colour up as spawning approaches. They become more territorial and can take aggressively. Autumnal colours (orange, copper, gold) work well.
Likely species
Caddisflies
- CapererMost likelyLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
- Net-spinning caddisAlso possibleLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- Large sedgesAlso possibleNearest relative#8–10 · AdultBig waked sedge in the last light and after dark.
Hatch timeline · todayPeak at 12h
12h(now) — Heather Fly
Stage: Terrestrials on topApproach: Dry flyActivity: 95%
Also:Daddy Long Legs52%Pond Olive29%
Peak emergence windowWeather boost9 food groups active
Peak activity at 12h — Heather Fly (Heather Fly, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 5 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
1
Sea trout runRun
1
2
1
Heather FlyHatch
2
2
Daddy Long LegsHatch
2
3
2
Claret DunHatch
2
3
2
Murrough (Great Red Sedge)Hatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Atlantic Salmon
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
- Day permits €25–35
- Catch-and-release for salmon
- Boats available.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Glenveagh National Park - geograph.org.uk - 51682 Terrain map
Water quality (WFD)
- Ecology: Unknown
- Chemical: Unknown
The full read · show the working · for Atlantic Salmon · confidence 75%
How the river scores — hydrology factors
Water heightMedium Ideal+2.3
Recent riseNone0.0
Falling after liftDropping Too Far Towards Low Clear+1.1
Water temperatureCool To Moderate+3.0
Time in seasonLate Season+0.5
ClarityClearing+2.4
Hydrology base9.3
Will they take?Willingcaps the band
Fish should be willing to take — clearing, stained water.
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
What would change the calculation
No prolonged stable spell before the current rise.
Directions
Seasons & zones
- Salmon 15 July → 30 SeptemberC&R
- Sea trout 15 July → 30 September
Related guides
Casting instructors near here
Booking & contacts