Stillwater · Limestone · East / Dublin, IE

Bohernabreena Reservoirs

View across Bohernabreena Reservoir surrounded by forested hills in the Dublin Mountains.

Two reservoirs sitting in the Glenasmole valley south of Dublin, near enough to the city to be a surprise.

Closed season · Trout
Perch Fry · 8–10 long shank
Closed season
Season reopens 1 March. Try elsewhere.
Closed — confidence not applicable today.

Bohernabreena Reservoirs is often best in spring through autumn.

What moved it
  • WindNE 16 km/hGentle breeze · Gusts to 26 km/h
Today's fly
Perch Fry
Perch Fry8–10 long shank
Retrieve
Conditions on the water
Estimate
Wind
Gentle breeze · Gusts to 26 km/h
NE 16 km/h
N
NE
from the north-east
Wave20 cm ripple
Water temp11.3°C
Air temp9°C
CloudOvercast
Pressure1008 hPa
Rain · recent0.0 mm

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

Head to
Wind driftNE wind
North-eastern end

A northeasterly has held for 6 hours, running colder than the water (8°C air against 12°C water). The end it blows into is taking that chilled surface water, so try the sheltered north-eastern end instead — off the back of the wind, where the undertow returns food along the bottom. That chill sits in the top of the water, though, and the bed is slower to feel it — on a bottom bait it is the undertow, not the temperature, that puts you at this end. Treat it as a tiebreaker between good swims rather than an override — features and angling pressure usually count for more.

How to fish it · for Trout
Where
Start with Perch Fry (8–10 long shank) — on the point. Early in the day, nymphs and buzzers fished slowly tend to outperform attractors.
The plan
Plan A

Start with Perch Fry (8–10 long shank) — on the point. Early in the day, nymphs and buzzers fished slowly tend to outperform attractors.

Plan B

Slow down everything. A booby on a fast-sinking line, left static, can pick up deep fish.

Watch for

Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.

Bank

Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 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 · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Reservoir BuzzerHatch
2
3
3
3
3
3
2
Daphnia SwarmHatch
2
3
3
3
2
Lake OliveHatch
2
3
3
3
3
3
2
Silverhorns & LonghornsHatch
1
2
2
2
1

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

Buzzer team todayfor the conditions now
Point
Black buzzer, orange thorax
Not in this water's box
#10
How to fish it
Intermediate line · let the breeze drift the team, then hang it 15–30 s

Fly recommendations

Point fly shown — supporters see the whole team, sizes and why.

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Ranked for today
Trout fly box
What's coming
Plan ahead
5-day outlook
Condition match
59%
Cloud50%
Wind65%
Temp60%

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

Other water nearby · 5
Gallery · 2
  1. View across Bohernabreena Reservoir surrounded by forested hills in the Dublin Mountains.
    Bohernabreena Reservoir in the Dublin Mountains, Co. Dublin.
  2. Terrain map of the venue
    Terrain map
About this water

The lower is stocked each year and holds the better fish, averaging just over half a pound with the odd one to four and a half; the upper is larger, its trout smaller but more plentiful. Fly-only, by Ministerial order, which spares you any agonising over method. Dublin City Council manages the fishery — you need a permit, or membership of the Dublin Trout Anglers or the Dodder Anglers.

Hatches & food

Upland Dublin-mountain reservoirs in a limestone valley but fed by acidic moorland — chironomid buzzer, midges and terrestrials dominate, with sparse lake olive and a useful summer sedge for the stocked and small wild trout.

  • Reservoir
  • Limestone
Water quality (WFD)
  • Ecology: Unknown
  • Chemical: Unknown
Why this score
  • winter conditions with overcast skies and breezy wind.
  • Reservoirs of this kind fish hard at this time of year.
Directions
Seasons & zones
  • Trout 1 March → 30 September
Related guides
Casting instructors near here
Booking & contacts
At a glance

Bohernabreena Reservoirs is a reservoir in East / Dublin, Ireland. The catchment geology is recorded as limestone, and the water sits at about 170 m above sea level. The species listed for this water is brown trout. The trout season is recorded as running from 1 March to 30 September. Core methods listed: loch-style wet fly from the bank; buzzer fishing under the wave; retrieved nymph/washing-line. Nearby waters in our listings include Corkagh Park Fishery at 10 km, River Dodder at 14 km and River Dargle (Tinnehinch Fishery) at 15 km.