Spate · Granite · West / Connemara, IE

Ballynahinch / Lough Inagh

A small stone fishing hut and moored boat beside a lake on the Ballynahinch Fishery estate, Connemara, with the mountain Benlettery in the background

Still probably the strongest brand-name Connemara sea-trout proposition you can talk about without overselling.

Prime · Atlantic Salmon
Silver Badger · 8-10
Primelive now
Prime conditions — go now
River high but settled. Heavy water — fish big and slow.
75% confidence
What moved it
  • LevelProxyvia Erriff
  • Water temp13.6°C
  • ClaritySlightly colouredClearing
Today's fly
SB
Silver Badger8-10
From the river-specific salmon pack.
Conditions on the water
Proxy gauge
Level
Falling
Proxy
via Erriff
Water temp13.6°C
ClaritySlightly coloured
Weather13°C
WindSE 32 km/h
Pressure1013 hPa
Rain · recent15.9 mm
Rain · ahead14.1 mm

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

Water temperature for Atlantic Salmon
Ideal
14°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Spring from March; grilse build through June and July. The Ballynahinch / Lough Inagh system fishes both river and lough drifts. Spate-responsive on the river, settled-wind for the lough.
Where
Ballynahinch Castle beats and the loughs upstream — Inagh and Derryclare. Named pools on the river; drift lines along the shore margins on the loughs.
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. 13.6°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
Hatch timeline · todayPeak at 6am

Hatch predictions

Today's headline hatch shown — see all 12 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 as a supporter.

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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 · 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
Heather FlyHatch
2
2
Daddy Long LegsHatch
2
3
2
Claret DunHatch
2
3
2
Murrough (Great Red Sedge)Hatch
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.

SB
Silver BadgerTop
8-10 · Salmon fly
From the river-specific salmon pack.
Permits & access
Permit required — see local rules.
  • Ballynahinch Castle fishery — advance booking essential
  • Premium pricing
  • Lough Inagh Lodge controls Inagh fishing
  • State rod licence required.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
  1. A small stone fishing hut and moored boat beside a lake on the Ballynahinch Fishery estate, Connemara, with the mountain Benlettery in the background
    A fishing hut and boat on the Ballynahinch Fishery, with Benlettery behind
  2. Terrain map of the venue
    Terrain map
About this water

Still probably the strongest brand-name Connemara sea-trout proposition you can talk about without overselling. Sea trout start running in June, peak in July, and continue on floods through the rest of the season. Ballynahinch Castle still says Lower Ballynahinch Lake can produce sea trout in midsummer — but that confidence sits within a diminished modern baseline, not a return to historical abundance. Best approached as a modest-numbers, flood- and timing-dependent fishery rather than a restored glory-days one. The river-lake combination and the prestige of the fishery still matter; the stock story does not justify old-school hype. Grilse are the main salmon target, moving quickly through the system after rain. In Galway, Connemara and Ballinakill districts it is an offence to kill sea trout over 40 cm. Lough Inagh itself holds wild brown trout. The castle hotel fishery is among Ireland's most renowned. For 2026 this is a catch-and-release fishery under the Wild Salmon & Sea Trout Tagging Scheme — all salmon and grilse must be returned.

Hatches & food

No venue-specific hatch data yet; as a lough-river system typical of Connemara's acidic-lough country, expect buzzers and terrestrials to dominate over rich upwing hatches, with the connecting river adding occasional spate-driven stonefly and sedge activity - treat this as a general expectation, not an observed hatch.

  • Lough system
  • Granite
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_32B090960

The full read · show the working · for Atlantic Salmon · confidence 75%
How the river scores — hydrology factors
Water heightMedium Ideal+2.3
Recent riseNone0.0
Falling after liftDropping Nicely Into Shape+4.5
Water temperatureCool To Moderate+3.5
Time in seasonLate Season+0.8
ClarityClearing+2.4
Hydrology base13.5
Rules that fired
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)

Related guides
Casting instructors near here
Booking & contacts