Stillwater · Sandstone · Mid Wales, GB-WLS

Brynhenllys Fishery

Brynhenllys is a Mid Wales stocked fishery sitting on sandstone, the kind of honest little water that asks nothing of you but a few hours and a bit of patience.

Closed season · Trout
Daddy Long Legs · 10–12
Closed season
Season reopens 3 March. Try elsewhere.
Closed — confidence not applicable today.

Brynhenllys Fishery is often best in spring through autumn.

What moved it
  • WindNE 16 km/hGentle breeze · Gusts to 28 km/h
Today's fly
Daddy Long Legs
Daddy Long Legs10–12
Upstream dry, on top
Conditions on the water
Estimate
Wind
Gentle breeze · Gusts to 28 km/h
NE 16 km/h
N
NE
from the north-east
Wave20 cm ripple
Water temp8.6°C
Air temp6°C
CloudBroken
Pressure1006 hPa
Rain · recent0.0 mm

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

How to fish it · for Trout
When
Cloudy or lightly breezy days, cool to moderate water; spring and autumn the steadiest, with buzzer activity through the warmer months.
Where
Start with Daddy Long Legs (10–12) on a As per local method. If that does not produce, switch depth or speed before changing the pattern entirely.
The plan
Plan A

Start with Daddy Long Legs (10–12) on a As per local method. If that does not produce, switch depth or speed before changing the pattern entirely.

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 fishing near inflows, dam walls, and weed beds. Move to find feeding fish.

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
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

Traditional wild-trout llyn fishing. Wet flies and dabblers stay central, with buzzer, caddis, terrestrials and occasional small fry patterns becoming important as the season warms.

BU
Bumble
10–12 · Pattern
Fish it in the film
What's coming
Plan ahead
5-day outlook
Condition match
74%
Cloud100%
Wind65%
Temp60%

A good match for Brynhenllys Fishery — most conditions are close to what it fishes best in.

Other water nearby · 5
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

There's no mystique here and that's rather the point. The trout are stocked and willing, but willing isn't the same as foolish, and on a bright still day they'll sulk in the depths and make you work for it. Come on a grey afternoon with a breeze putting a ripple on the surface and the whole place opens up. It fishes best cool, which suits the Welsh weather, since cool is mostly what's on offer. A reliable place to relearn that catching fish is only part of why you came.

  • Fishery
  • Sandstone
Why this score
  • Cloud cover (cloud) suits the fishery well.
Related guides
Casting instructors near here
Booking & contacts
Permits & access
Boards & regulators
At a glance

Brynhenllys Fishery is a stillwater fishery in Mid Wales. The catchment geology is recorded as sandstone, and the water sits at about 191 m above sea level. The species listed for this water is brown trout. Core methods listed: Floating line with a buzzer team fished slow; Washing-line setup with an emerger on the point; Static dry fly during a surface rise. Nearby waters in our listings include Afon Twrch at 3.0 km, Llyn y Fan Fach at 10 km and Usk Reservoir at 17 km.