Lowland · Mixed · Co. Londonderry / Co. Antrim, GB-NIR

Lower Bann

The Lower River Bann at Toome, County Antrim, shortly after it drains from Lough Neagh.

The Lower Bann runs from Lough Neagh to the sea at Coleraine — 61 km of powerful, broad river that carries the largest salmon run in Northern Ireland.

Today · Marginal — persistence required
Czech Nymph
Forecast · Today
Marginal — persistence required
A short window at best — fish the sure lies and move on.
40% projected
Today's fly
Czech Nymph
Czech Nymph
Conditions on the water · Today
Live gauge
Level
Rising
7.47 m
Lifting fast
Water temp14.6°C
ClarityVery coloured
Weather14°C
WindN 37 km/h
Pressure1000 hPa
Rain · recent3.2 mm
Rain · ahead2.3 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Atlantic Salmon
Ideal
15°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.
Why this works
Fair conditions based on river hydrology and migration patterns.
Likely species
Hatch timeline · todayPeak at 11am

12pm(now) — Black Gnat

Stage: On emergersApproach: Emerger or dryActivity: 49%
Also:Cinnamon Sedge33%Heather Fly32%Pale Watery26%
Peak emergence windowWeather boost11 food groups active

Peak activity at 11am — Black Gnat (Black Gnat, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

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

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14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 5 as a supporter.

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14-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
1
Mayfly (Green Drake)Hatch
2
2
Large Cinnamon SedgeHatch
2
3
3
2
Daddy Long LegsHatch
2
3
2
CapererHatch
2
3
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
Gallery · 2
  1. The Lower River Bann at Toome, County Antrim, shortly after it drains from Lough Neagh.
    The Lower River Bann at Toome, just after it leaves Lough Neagh on its way to the Atlantic.
  2. Terrain map of the venue
    Terrain map
About this water

The Lower Bann runs from Lough Neagh to the sea at Coleraine — 61 km of powerful, broad river that carries the largest salmon run in Northern Ireland. The Carnroe beat near Coleraine is premium water (eight rods per day, historically averaging 1,000+ salmon over a ten-year period). The lower river below the Cutts weir at Coleraine fishes on the tide. Salmon run from April with the main push June–September. The river is big and slow — boat fishing and bank casting both work. The Honourable Irish Society controls several beats. Grilse peak in July. Sea trout are present but secondary. The Bann also holds excellent coarse fishing, pike, and dollaghan from the Lough Neagh feeder system. Atlantic salmon are managed under DAERA and Loughs Agency conservation byelaws, with mandatory catch-and-release on many waters; check current rules before fishing.

Hatches & food

No venue-specific hatch data yet; as a lowland main-stem river, expect the steadier mixed diet of upwings, sedges and midges typical of larger Ulster lowland rivers — a general expectation, not a confirmed hatch.

Sea trout here

Summer-autumn runs, seasonal patterns vary by region

  • Mixed
The full read · show the working · for Atlantic Salmon · confidence 75%
How the river scores — hydrology factors
Water heightMedium Ideal0.0
Recent riseNone0.0
Falling after liftNot Applicable0.0
Water temperatureCool To Moderate0.0
Time in seasonOpening Period0.0
ClarityClearing0.0
Hydrology base0.0
Legal gate: Unknown Check Local Rules
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Directions
Seasons & zones
  • Salmon 1 April → 15 October

Sea trout: Variable seasonal (2026)

Related guides
Casting instructors near here
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