Mayflies
Caddisflies
Gammarids
- Ecology: High
- Chemical: Unknown
What this classification means
EPA WFD 2019-2024 — High ecological status; filled 2026-06-18. Source: EPA Ireland WFD 2019-2024 classification (catchments.ie / EDEN).
EPA (Ireland) · IEWE_32B010100
Rules at a glance
- Private fishery
- Fly only
- C&R only
Water temperature for Atlantic Salmon
Ideal13°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Spring from March; grilse from June; main run through summer. Delphi is rapid-response spate water — fish the rise and the drop after rain. Late afternoon often the prime window.
Where
Delphi Lodge beats through the Bundorragha River and the loughs. Heads and tails of named pools; the lodge ghillies will direct you.
Method
Small doubles 10 to 12 across-and-down on a floating line; small tubes on a sink-tip in spring water. Catch-and-release encouraged across most Irish salmon water.
Kit
10 ft #7 single-hander on the smaller spate rivers; 11 ft switch where the river opens out. Floating line plus light sink-tip. 10 to 12 lb fluoro tippet.
Why this works
The river is in textbook shape. River dropping nicely into shape after a lift — textbook conditions. Clearing nicely — classic taking conditions. 13.2°C — in the ideal taking range for autumn salmon. This is the window experienced salmon anglers wait for — if you can get to the river, go now.
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.
- Large sedgesAlso possibleNearest relative#8–10 · AdultBig waked sedge in the last light and after dark.
Hatch timeline · todayPeak at 06:00
Hatch predictions
Today's headline hatch shown — see all 7 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
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 3 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
Sea trout runRun
1
2
2
1
March BrownHatch
2
3
2
CapererHatch
2
3
3
2
Heather FlyHatch
2
2
Autumn DunHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Atlantic Salmon
10-12 / small tube · Salmon fly
8-10 · Salmon fly
Permits & access
Permit required — see local rules.
- Private fishery — book through Delphi Lodge; premium pricing
- To protect the genetic integrity of the wild stock, all fish of hatchery origin ('ranchers', recognised by a clipped adipose fin) must be killed and gill-tagged under State licence
- Wild salmon must be released — with one exception: an angler's first-ever salmon may be kept
- All sea trout are catch-and-release (and under regional bye-law it is in any case an offence to kill a sea trout over 40 cm in the Galway, Connemara and Ballinakill districts)
- Wading prohibited on all beats — fish from the bank; lifejackets required on the loughs
- Source: delphilodge.ie.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 4
Bundorragha river 
Delphi Lodge from Fin Lough 
Doolough Terrain map
Water quality (WFD)
The full read · show the working · for Atlantic Salmon · confidence 75%
How the river scores — hydrology factors
Water heightHigh But Manageable+0.9
Recent riseSmall Recent Rise+2.3
Falling after liftDropping Nicely Into Shape+4.0
Water temperatureCool To Moderate+1.5
Time in seasonLate Season0.0
ClarityClearing+2.4
Hydrology base11.1
Rules that fired
High But Dropping Into Shape Bonus+0.75
Clearing After Spate Bonus+1
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 / flowproxy via Erriffproxy
What would change the calculation
No prolonged stable spell before the current rise.
Directions
Seasons & zones
- Salmon 1 February → 30 SeptemberC&R
- Sea trout 1 June → 30 September
Sea trout: Variable seasonal (2026) — Delphi (Co. Mayo) — exclusive Connemara spate fishery in the Doolough valley. Sea-trout runs present recent recovery signals but operate within the broader 1990s-onwards Connemara context. Catch-and-release is the norm.
Related guides
Casting instructors near here
Booking & contacts
Delphi Lodge
Water temperature for Atlantic Salmon
Ideal13°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Spring from March; grilse from June; main run through summer. Delphi is rapid-response spate water — fish the rise and the drop after rain. Late afternoon often the prime window.
Where
Delphi Lodge beats through the Bundorragha River and the loughs. Heads and tails of named pools; the lodge ghillies will direct you.
Method
Small doubles 10 to 12 across-and-down on a floating line; small tubes on a sink-tip in spring water. Catch-and-release encouraged across most Irish salmon water.
Kit
10 ft #7 single-hander on the smaller spate rivers; 11 ft switch where the river opens out. Floating line plus light sink-tip. 10 to 12 lb fluoro tippet.
Why this works
The river is in textbook shape. River dropping nicely into shape after a lift — textbook conditions. Clearing nicely — classic taking conditions. 13.2°C — in the ideal taking range for autumn salmon. This is the window experienced salmon anglers wait for — if you can get to the river, go now.
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.
- Large sedgesAlso possibleNearest relative#8–10 · AdultBig waked sedge in the last light and after dark.
Hatch timeline · todayPeak at 06:00
Hatch predictions
Today's headline hatch shown — see all 7 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
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 3 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
Sea trout runRun
1
2
2
1
March BrownHatch
2
3
2
CapererHatch
2
3
3
2
Heather FlyHatch
2
2
Autumn DunHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Atlantic Salmon
10-12 / small tube · Salmon fly
8-10 · Salmon fly
Permits & access
Permit required — see local rules.
- Private fishery — book through Delphi Lodge; premium pricing
- To protect the genetic integrity of the wild stock, all fish of hatchery origin ('ranchers', recognised by a clipped adipose fin) must be killed and gill-tagged under State licence
- Wild salmon must be released — with one exception: an angler's first-ever salmon may be kept
- All sea trout are catch-and-release (and under regional bye-law it is in any case an offence to kill a sea trout over 40 cm in the Galway, Connemara and Ballinakill districts)
- Wading prohibited on all beats — fish from the bank; lifejackets required on the loughs
- Source: delphilodge.ie.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 4
Bundorragha river Delphi Lodge from Fin Lough Doolough Terrain map
Water quality (WFD)
- Ecology: High
- Chemical: Unknown
What this classification means
EPA WFD 2019-2024 — High ecological status; filled 2026-06-18. Source: EPA Ireland WFD 2019-2024 classification (catchments.ie / EDEN).
EPA (Ireland) · IEWE_32B010100
The full read · show the working · for Atlantic Salmon · confidence 75%
How the river scores — hydrology factors
Water heightHigh But Manageable+0.9
Recent riseSmall Recent Rise+2.3
Falling after liftDropping Nicely Into Shape+4.0
Water temperatureCool To Moderate+1.5
Time in seasonLate Season0.0
ClarityClearing+2.4
Hydrology base11.1
Rules that fired
High But Dropping Into Shape Bonus+0.75
Clearing After Spate Bonus+1
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 / flowproxy via Erriffproxy
What would change the calculation
No prolonged stable spell before the current rise.
Directions
Seasons & zones
- Salmon 1 February → 30 SeptemberC&R
- Sea trout 1 June → 30 September
Sea trout: Variable seasonal (2026) — Delphi (Co. Mayo) — exclusive Connemara spate fishery in the Doolough valley. Sea-trout runs present recent recovery signals but operate within the broader 1990s-onwards Connemara context. Catch-and-release is the norm.
Related guides
Casting instructors near here
Booking & contacts