Spate · Mixed · East / Louth

Ballymascanlan River

Ballymascanlan River terrain map
Terrain map

The Ballymascanlan rises on Slieve Gullion and runs some fourteen miles to Dundalk Bay.

Prime · Brown Trout
Pheasant Tail Nymph · 14-18
Primelive now
About as good as it gets
River high but settled. Coloured water — fish bigger and deeper, confident takes down the seams.
80% confidence
What moved it
  • LevelProxyvia River Dee (Louth)
  • Water temp13.4°C
  • ClarityClear
Today’s fly
Pheasant Tail Nymph
Pheasant Tail Nymph14-18
Upstream
Conditions on the water
Proxy gauge
Level
Falling
Proxy
via River Dee (Louth)
Water temp13.4°C
ClarityClear
Weather23°C
WindE 21 km/h
Pressure1015 hPa
Rain · recent0.0 mm
Rain · ahead7.1 mm

No gauge on this water — conditions are inferred from River Dee (Louth). The trend transfers, the absolute level does not.

Water temperature for brown trout
Ideal
13.4°Cideal 1016°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
Excellent — water temperature is right today, though time of day could be better.
Hatch timeline · todayPeak at 2pm

Hatch predictions

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

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Through the year
0–3 scale · June 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
About this water

The Ballymascanlan rises on Slieve Gullion and runs some fourteen miles to Dundalk Bay. It holds a modest stock of brown trout, but its summer salmon and sea trout are the draw, and the best of that lies in the pools below Ballymascanlan Bridge. This is a spate river: fish it after a flood, when fresh fish have run up on the rising water. Work the pools at night from July to September. Dundalk Brown Trout Anglers hold the day permits.

  • Mixed
The full read · show the working · for brown trout · confidence 80%
How the 83 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity66 × 12%7.9
Conditions total= 83
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowproxy via River Dee (Louth)proxy
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Trout1 March → 30 September
Related guides
Booking & contacts