Spate · Peat · North West / Mayo, IE

Glenamoy River

The Glenamoy River flowing through open bogland in north County Mayo, Ireland.

A remote spate river on the Erris peninsula of north Mayo, lying apart from the Owenmore to its south.

Tomorrow · Closed season
Stonefly Nymph
Forecast · Tomorrow
Closed season
Out of season. File this water for the right month.
85% projected
Today's fly
Stonefly Nymph
Stonefly Nymph
Conditions on the water · Tomorrow
Proxy gauge
Level
Steady
Proxy
via Deel at Keenagh Bridge (Moy system)
Water temp8.6°C
ClarityClear
Weather6°C
WindN 11 km/h
Pressure1018 hPa
Rain · recent0.0 mm
Rain · ahead0.7 mm

No gauge on this water — conditions are inferred from Deel at Keenagh Bridge (Moy system). The trend transfers, the absolute level does not.

Water temperature for Atlantic Salmon
Cool — slow
9°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Morning into early afternoon.
Where
Pool tails, steadier runs, and any water with pace.
Method
Fish a sensible line-and-fly combination for the height and pace of water.
Kit
13 ft #8/9 double-hander in spate, 10 ft #8 single in low water. Floating line plus a fast-sink tip. 12–15 lb fluoro tippet.
Likely species
Stoneflies
Hatch timeline · tomorrowPeak at 11am

12pm(now) — Autumn Needle Fly

Stage: Creeping nymphsApproach: Heavy nymphActivity: 76%
Also:Autumn Olive52%Black Midge33%
Peak emergence windowWeather boost4 food groups active

Peak activity at 11am — Autumn Needle Fly (Autumn Needle Fly, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Supporters see what else is on the menu.

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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 · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
1
Sea trout runRun
1
2
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
Atlantic Salmon fly box

Connemara/Mayo low water: a lightly-dressed shrimp on a floating line with sink tip, sized down from 8s in cold spring water to 12s and 14s as summer water warms and clears. Where the current runs faster, a slim tube or hairwing swung through tracks better than a shrimp.

What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Carrowmore Lake
12 km
0
Brown trout · Salmon · Sea trout
Owenmore (Erris)
14 km
0
Brown trout · Salmon · Sea trout
Owenduff
27 km
0
Brown trout · Salmon · Sea trout
Moy
34 km
0
Brown trout · Salmon · Sea trout
Burrishoole
37 km
Brown trout · Salmon · Sea trout
Gallery · 2
  1. The Glenamoy River flowing through open bogland in north County Mayo, Ireland.
    The Glenamoy River in north County Mayo, a spate system for salmon and sea trout.
  2. Terrain map of the venue
    Terrain map
About this water

This is flood fishing in wild country: grilse and sea trout run on a rise of water, and there is little point being here without one. For 2026 the river is catch-and-release for salmon and sea trout. Enquire with IFI Ballina, and carry the Salmon and Sea Trout State Licence.

Hatches & food

EPA monitoring of the Glenamoy River's WFD reaches confirms mayflies, stoneflies, caddis, aquatic diptera and gammarus are present. This is food-presence evidence from kick sampling only, with no confirmed emergence timing or visible hatch.

  • Peat
Water quality (WFD)
  • Ecology: Unknown
  • Chemical: Unknown
Why this score · for Atlantic Salmon
  • Temperature4530% weight
  • Flow6025% weight
  • Clarity8520% weight
  • Feeding Time1515% weight
  • Pressure8510% weight
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Salmon 1 May → 30 SeptemberC&R
  • Sea trout 1 May → 30 SeptemberC&R
Related guides
Atlantic Salmonsalmon tacticsIrish Salmon Rivers Guidefive great salmon fisheriesConnemaraIrish fishing
Casting instructors near here
Booking & contacts
Permits & access
At a glance

Glenamoy River is a spate river in North West / Mayo, Ireland. Its recorded elevation is about 35 m above sea level and the catchment geology is peat. Our data lists salmon and sea trout here. It is classed as a salmon river. The salmon season is recorded as running from 1 May to 30 September. The sea trout season is recorded as running from 1 May to 30 September. Core methods listed: floating line wet fly across-and-down; shrimp flies on a clearing flood; night fishing for sea trout. Nearby waters in our listings include Carrowmore Lake at 12 km, Owenmore (Erris) at 14 km and Owenduff at 27 km.