Stillwater · Limestone · Midlands / Westmeath, IE

Lough Derravaragh

Lough Derravaragh in September 2009

A rich limestone lake on the River Inny north of Mullingar, holding wild brown trout averaging a pound and a half with fish to six pounds — wild only, never stocked, which counts for something.

Fair · Trout
Perch Fry · 8-10_long_shank
Fairlive now
Buzzer expected on Lough Derravaragh
Useful ripple, fishable wave. Worth a session if the wind holds.
55% confidence

Lough Derravaragh is often best in spring through autumn.

What moved it
  • WindW 25 km/hModerate breeze
Today's fly
Perch Fry
Perch Fry8-10_long_shank
Retrieve
Conditions on the water
Estimate
Wind
Moderate breeze
W 25 km/h
N
W
from the west
Wave40 cm chop
Water temp12.4°C
Air temp14°C
CloudClear
Pressure1009 hPa
Rain · recent0.0 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Stale water· No rain in 48h

Little recent rain — fresh fish runs unlikely. Focus on resident fish and established lies.

How to fish it · for Trout
Where
Work Muddler Minnow on the bob and Perch Fry on the point.
The plan
Plan A

Work Muddler Minnow on the bob and Perch Fry on the point.

Plan B

If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. A change of drift angle can also make a difference.

Watch for

Watch for Sedge towards evening — this could be the best window of the day.

Boat — at anchor

Windy conditions suit anchoring in productive areas rather than open-water drifting.

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 5 as a supporter.

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Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
1
Green PeterHatch
2
3
2
Murrough (Great Red Sedge)Hatch
2
3
2
DuckflyHatch
2
2
Mayfly (Green Drake)Hatch
2
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Trout fly box
What's coming
Plan ahead
5-day outlook
Condition match
50%
Cloud25%
Wind30%
Temp100%

A reasonable day here, though cloud isn't quite in the sweet spot.

Other water nearby · 5
Lough Lene
9.0 km
Brown trout
Lough Owel
10 km
Brown trout
White Lough (Upper Boyne Lakes)
11 km
Brown trout · Rainbow trout
Lough Bane
13 km
Brown trout · Rainbow trout
Lough Sheelin
18 km
Brown trout
Gallery · 2
  1. Lough Derravaragh in September 2009
  2. Terrain map of the venue
    Terrain map
About this water

A rich limestone lake on the River Inny north of Mullingar, holding wild brown trout averaging a pound and a half with fish to six pounds — wild only, never stocked, which counts for something. The shallow northern end carries most of the trout fishing; the deep southern end is where the big ones come from. Duckfly and olives open the season, and a recovering mayfly drives the heart of it. Midland Fisheries Group permit, with a bag of two and a 36 cm minimum under Bye-law 949; catch-and-release is encouraged.

Hatches & food

A rich limestone Inny lake with full Midland fly life — duckfly and lake olive open the season, a recovering Mayfly (Ephemera danica) peaks late May, then caenis and a strong sedge/Green Peter season carry the wild trout.

  • Lough
  • Limestone
Water quality (WFD)
  • Ecology: Unknown
  • Chemical: Unknown
Why this score
  • Wind conditions (windy) are not ideal for this water.
  • Temperature (cool) is in the sweet spot for autumn fishing.
  • Buzzer is in its seasonal window, boosting the chance of targeted feeding.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 March → 12 October
Related guides
Irish Loughs Playbooklough-style fishingThermal Layers & Troutreading depth and temperatureConnemaraIrish fishing
Casting instructors near here
Booking & contacts