Limestone · East / Meath

River Deel (Meath)

River Deel (Meath) terrain map

A clear limestone river draining Loughs Lene and Bane down through Raharney to the Boyne.

Marginal · Brown Trout
Pheasant Tail Nymph · 14-18
Marginallive now
Slow going — pick your moments
River dropping into shape after a lift. A short window. Take your time.
55% confidence
What moved it
  • LevelProxyvia Boyne
  • Water temp13.0°C
  • ClarityVery colouredColouring up
Today's fly
Pheasant Tail Nymph
Pheasant Tail Nymph14-18
Upstream
Conditions on the water
Proxy gauge
Level
Steady
Proxy
via Boyne
Water temp13.0°C
ClarityVery coloured
Weather20°C
WindNW 18 km/h
Pressure1020 hPa
Rain · recent0.2 mm
Rain · ahead0.9 mm

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

Water temperature for Brown Trout
Ideal
13°C est.ideal 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
Poor — water temperature is working for you, but water clarity is the limiting factor today.
Hatch timeline · todayPeak at 6am

Hatch predictions

Today's headline hatch shown — see all 7 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 2 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

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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
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
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
Fishing better nearby · 5
About this water

A clear limestone river draining Loughs Lene and Bane down through Raharney to the Boyne. It throws the sort of hatches that make a limestone river worth the name — upwings, sedges and diptera in good number — and the trout have come back well since the drainage works, with wild fish to over two pounds. It fishes best early, before the weed sets in and turns every drift into a negotiation. Deel and Boyne Angling Association water; dry-fly only from Raharney to Inan Bridge.

Hatches & food

A clear, weedy limestone river draining Loughs Lene and Bane with genuinely prolific upwing, sedge and diptera hatches — and enough lake-fed richness to support a patchy Mayfly (Ephemera danica) emergence in late May.

  • Limestone
The full read · show the working · for Brown Trout · confidence 55%
How the 30 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity15 × 18%2.7
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity58 × 12%7.0
Limiting factor: Water is very coloured — too coloured for Brown Trout= 69
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Boyneproxy
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
A drop and clear would lift the flow and clarity scores.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Trout 1 March30 September
Related guides
Casting instructors near here
Booking & contacts
Permits & access