Lowland · Mixed · Co. Armagh / Lough Neagh Tributaries, GB-NIR

River Blackwater (NI)

The River Blackwater flowing near Maghery, Northern Ireland, close to Lough Neagh
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.
90% confidence
What moved it
  • Level0.80 mLast reading 7h ago
  • Water temp17.0°C
  • ClarityClear
Today's fly
Partridge and Orange
Partridge and Orange14-16
Upstream
Conditions on the water
Live gauge
Level
Steady
0.80 m
Last reading 7h ago
Water temp17.0°C
ClarityClear
Weather16°C
WindNW 13 km/h
Pressure1022 hPa
Rain · recent0.8 mm
Rain · ahead4.0 mm

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

Water temperature for Brown Trout
Warm — slow
17°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 right today, though insect activity could be better.
Hatch timeline · todayPeak at 6pm

Hatch predictions

Today's headline hatch shown — see all 12 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 3 with Pro.

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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
Trout seasonSeason
1
2
2
2
2
2
1
Daddy Long LegsHatch
2
3
2
Terrestrial BeetlesHatch
2
3
3
2
Blue Winged OliveHatch
1
2
2
2
2
1
Black MidgeHatch
1
2
2
2
2
2
2
2
2
2
2
1

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
Annaginny Fishery
12 km
Rainbow trout
Ballinderry River
13 km
Brown trout · Dollaghan
Lough Neagh
17 km
Brown trout · Pike · Dollaghan
River Cusher
22 km
71
Brown trout
River Moyola
28 km
Brown trout · Salmon · Dollaghan
Gallery · 2
  1. The River Blackwater flowing near Maghery, Northern Ireland, close to Lough Neagh
    River Blackwater at Maghery, Northern Ireland
  2. Terrain map of the venue
    Terrain map
The full read · show the working · for Brown Trout · confidence 90%
How the 77 is built — score × weight = contribution
Temperature77 × 28%21.6
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity58 × 12%7.0
Conditions total= 77
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 March → 30 September
Related guides
ConnemaraIrish fishingEuro Nymphingsubsurface methods
Casting instructors near here
Booking & contacts