Spate · Mixed · South-West / Cork

River Ilen

River Ilen terrain map

West Cork spate river flowing to Roaringwater Bay.

Marginal · Brown Trout
Partridge and Orange · 14-16
Marginallive now
Slow going — pick your moments
River temperature is the limiting factor today, not the flow. Fish dawn or dusk if you go at all, and handle everything with extra care.
80% confidence
What moved it
  • Level1.42 mLifting fast
  • Water temp20.3°C
  • ClarityVery colouredColouring up
Today's fly
Partridge and Orange
Partridge and Orange14-16
Upstream
Conditions on the water
Live gauge
Level
Rising
1.42 m
Lifting fast
Water temp20.3°C
ClarityVery coloured
Weather21°C
WindSW 19 km/h
Pressure1021 hPa
Rain · recent0.2 mm
Rain · ahead0.8 mm

Live readings only. Trends shown where the gauge supports them.

Water temperature for Brown Trout
Warm — slow
20.3°Cideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Water at 20.3°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Hatch timeline · todayPeak at 6pm

Hatch predictions

Today's headline hatch shown — see all 7 active hatches hour by hour with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

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Evidence
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
2
2
2
1
Trout seasonSeason
1
2
2
2
2
2
2
1
Daddy Long LegsHatch
2
3
2
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
  • South Western Fisheries District
  • River Ilen AC manages the river around Skibbereen
  • Permits from Field Newsagents, The Square, Skibbereen (+353 28 21400)
  • Shrimp prohibited (fly, spinning, worm only)
  • Night fishing prohibited to visiting anglers
  • State rod licence required.
What's coming
Plan ahead
5-day outlook
Water here at 20.3°C. Nothing cooler within range.
About this water

West Cork spate river flowing to Roaringwater Bay. Wild brown trout with some sea trout. Mixed geology in a mild Atlantic-coast catchment.

Hatches & food

EPA freshwater monitoring on the River Ilen confirms mayflies, stoneflies, caddis, aquatic diptera and freshwater crustaceans (shrimp and hoglice) are present across its monitored segments. The records establish food presence rather than adult emergence timing.

  • Mixed
The full read · show the working · for Brown Trout · confidence 80%
How the 26 is built — score × weight = contribution
Temperature21 × 28%5.9
Flow30 × 22%6.6
Clarity15 × 18%2.7
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity49 × 12%5.9
Limiting factor: Water is very coloured — too coloured for Brown Trout= 36
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
A drop and clear would lift the flow and clarity scores.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Salmon 1 February → 30 September
  • Trout 15 February → 30 September
Related guides
ConnemaraIrish fishingEuro Nymphingsubsurface methods
Casting instructors near here
Booking & contacts