Stoneflies
Caddisflies
Gammarids
- Ecology: Good
- Chemical: Unknown
What this classification means
EPA WFD 2019-2024 — Good ecological status; filled 2026-06-18. Source: EPA Ireland WFD 2019-2024 classification (catchments.ie / EDEN).
EPA (Ireland) · IEWE_30C020300
Rules at a glance
- Permit required
- Barbless
- 6 rods max
Water temperature for Atlantic Salmon
Ideal16°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Spring fish from February through May concentrate at the weir; grilse from late May. Fish the rising water on the second day after rain through the dropping water — sluice management defines the heights.
Where
Galway Weir pools and the Corrib River below the weir to the tidal limit. The water is sluice-controlled freshwater — heights track upstream rainfall and weir management, not tide.
Method
Spring: tube on a sink-tip swung deep through the main pools. Summer and autumn: small doubles on a floater across-and-down. Catch-and-release on most beats.
Kit
12 to 13 ft #8 double-hander on the bigger water; 11 ft switch on smaller beats. Floating line plus fast-sink tip. 10 to 12 lb fluoro tippet.
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
- Net-spinning caddisMost likelyLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- CapererAlso possibleLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
- Green SedgeAlso possibleLower confidenceNearest relative#10–12–14–16 · NymphFree-living green caddis larva; fast stony riffles.
Hatch timeline · todayPeak at 12:00
12:00(now) — Heather Fly
Stage: Terrestrials on topApproach: Dry flyActivity: 95%
Also:Reed Smut86%Cinnamon Sedge51%Autumn Dun47%
Peak emergence windowWeather boost10 food groups active
Peak activity at 12:00 — Heather Fly (Heather Fly, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 4 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
2
2
2
2
2
1
Daddy Long LegsHatch
2
3
2
CapererHatch
2
3
3
2
Hawthorn FlyHatch
2
2
GrannomHatch
2
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Atlantic Salmon
12 / small tube · Salmon fly
Permits & access
Permit required — see local rules.
- Galway Weir is one of Ireland's most iconic and accessible salmon fisheries
- Day tickets from the Galway Fishery; State rod licence required
- 2026: an open fishery under the Wild Salmon & Sea Trout Tagging Scheme (S.I
- 129/2026) — salmon may be retained up to 31 August under tag and the seasonal bag limit, catch-and-release from 1 September
- Killing sea trout is prohibited throughout the Galway district.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 9
The weir 
Just below the weir 
Galway Weir 
Car park and fishery office 
The Salmon Weir, Galway 
The Salmon Weir, Galway — panorama 
Salmon Weir, River Corrib 
River Corrib downstream from Salmon Weir Bridge Terrain map
Water quality (WFD)
The full read · show the working · for Atlantic Salmon · confidence 75%
How the river scores — hydrology factors
Water heightVery Low-2.6
Recent riseNone0.0
Falling after liftDropping Too Far Towards Low Clear+1.0
Water temperatureCool To Moderate+3.5
Time in seasonLate Season+0.4
ClarityClearing+2.4
Hydrology base4.7
Will they take?Neutralcaps the band
Taking mood is fair — clearing, stained water, very low flow.
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
What would change the calculation
No prolonged stable spell before the current rise.
Directions
Seasons & zones
- Salmon 1 February → 30 September
Sea trout: Variable seasonal (2026)
Related guides
Casting instructors near here
Booking & contacts
Permits & access
Corrib / Galway Weir
Water temperature for Atlantic Salmon
Ideal16°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Spring fish from February through May concentrate at the weir; grilse from late May. Fish the rising water on the second day after rain through the dropping water — sluice management defines the heights.
Where
Galway Weir pools and the Corrib River below the weir to the tidal limit. The water is sluice-controlled freshwater — heights track upstream rainfall and weir management, not tide.
Method
Spring: tube on a sink-tip swung deep through the main pools. Summer and autumn: small doubles on a floater across-and-down. Catch-and-release on most beats.
Kit
12 to 13 ft #8 double-hander on the bigger water; 11 ft switch on smaller beats. Floating line plus fast-sink tip. 10 to 12 lb fluoro tippet.
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
- Net-spinning caddisMost likelyLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- CapererAlso possibleLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
- Green SedgeAlso possibleLower confidenceNearest relative#10–12–14–16 · NymphFree-living green caddis larva; fast stony riffles.
Hatch timeline · todayPeak at 12:00
12:00(now) — Heather Fly
Stage: Terrestrials on topApproach: Dry flyActivity: 95%
Also:Reed Smut86%Cinnamon Sedge51%Autumn Dun47%
Peak emergence windowWeather boost10 food groups active
Peak activity at 12:00 — Heather Fly (Heather Fly, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 4 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
2
2
2
2
2
1
Daddy Long LegsHatch
2
3
2
CapererHatch
2
3
3
2
Hawthorn FlyHatch
2
2
GrannomHatch
2
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Atlantic Salmon
12 / small tube · Salmon fly
Permits & access
Permit required — see local rules.
- Galway Weir is one of Ireland's most iconic and accessible salmon fisheries
- Day tickets from the Galway Fishery; State rod licence required
- 2026: an open fishery under the Wild Salmon & Sea Trout Tagging Scheme (S.I
- 129/2026) — salmon may be retained up to 31 August under tag and the seasonal bag limit, catch-and-release from 1 September
- Killing sea trout is prohibited throughout the Galway district.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 9
The weir Just below the weir Galway Weir Car park and fishery office The Salmon Weir, Galway The Salmon Weir, Galway — panorama Salmon Weir, River Corrib River Corrib downstream from Salmon Weir Bridge Terrain map
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
What this classification means
EPA WFD 2019-2024 — Good ecological status; filled 2026-06-18. Source: EPA Ireland WFD 2019-2024 classification (catchments.ie / EDEN).
EPA (Ireland) · IEWE_30C020300
The full read · show the working · for Atlantic Salmon · confidence 75%
How the river scores — hydrology factors
Water heightVery Low-2.6
Recent riseNone0.0
Falling after liftDropping Too Far Towards Low Clear+1.0
Water temperatureCool To Moderate+3.5
Time in seasonLate Season+0.4
ClarityClearing+2.4
Hydrology base4.7
Will they take?Neutralcaps the band
Taking mood is fair — clearing, stained water, very low flow.
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
What would change the calculation
No prolonged stable spell before the current rise.
Directions
Seasons & zones
- Salmon 1 February → 30 September
Sea trout: Variable seasonal (2026)
Related guides
Casting instructors near here
Booking & contacts
Permits & access