Spate · Granite · East / Wicklow

River Ow

River Ow terrain map
Terrain map

The Ow rises in the Lugnaquilla foothills and runs south through compact granite uplands to join the Derry Water at Aughrim village, where the two streams together become the Aughrim River.

Good · Brown Trout
Partridge and Orange · 14-16
Goodlive now
A proper day on the water
River steady at a fishable height. A proper day for it. Work the seams with an upstream nymph, switch to the dry when they show.
75% confidence
What moved it
  • LevelProxyvia Slaney
  • Water temp17.6°C
  • ClarityClear
Today’s fly
Partridge and Orange
Partridge and Orange14-16
Upstream
Conditions on the water
Proxy gauge
Level
Steady
Proxy
via Slaney
Water temp17.6°C
ClarityClear
Weather14°C
WindS 26 km/h
Pressure1018 hPa
Rain · recent4.3 mm
Rain · ahead0.3 mm

No gauge on this water — conditions are inferred from Slaney. The trend transfers, the absolute level does not.

Water temperature for brown trout
Warm — slow
18°C est.ideal 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
Good — water clarity is working for you, but insect activity is the limiting factor today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 6 active hatches hour by hour with Pro.

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Evidence
Survey-backed · regionalModerate confidence

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

Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
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
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
River Ow
< 1 km
Brown trout
Avoca River
7.0 km
Brown trout
Aughrim River
8.0 km
36
Brown trout
Aughrim River
8.0 km
Brown trout
Owenavorragh River
16 km
Brown trout · Sea trout
About this water

The Ow rises in the Lugnaquilla foothills and runs south through compact granite uplands to join the Derry Water at Aughrim village, where the two streams together become the Aughrim River. Small wild brown trout, fast response to rain, intimate water that fishes best the first day after a spate. The Aughrim & District Trout Angling Club holds the rights and tickets the Ow, the Derry Water and the lower Aughrim as three separately named waters — one connected system, three pieces of named water, one day ticket. Tourism copy that loosely refers to 'the Ow or Aughrim' is collapsing the names of the lower mainstem; the Ow proper is the upland tributary above the village confluence.

  • Granite
The full read · show the working · for brown trout · confidence 75%
How the 73 is built — score × weight = contribution
Temperature64 × 28%17.9
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity44 × 12%5.3
Conditions total= 73
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Slaneyproxy
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.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout1 March → 30 September
Related guides
ConnemaraIrish fishingEuro Nymphingsubsurface methods
Booking & contacts