Stillwater · Old Red Sandstone · Wales / Brecon Beacons (Upper Usk), GB-WLS

Usk Reservoir

Usk Reservoir in Myddfai, Carmarthenshire, showing the open water body and surrounding landscape.
Fair · Rainbow
Minkie · 6-10
Fairlive now
Good autumn conditions for Usk Reservoir
Good wave on — drift country. A useful wave. Work the productive shore.
64% confidence

Usk Reservoir is often best in spring through autumn.

What moved it
  • WindSW 13 km/hGentle breeze
Today's fly
Minkie
Minkie6-10
Retrieve, sub-surface
Conditions on the water
Estimate
Wind
Gentle breeze
SW 13 km/h
N
SW
from the south-west
Wave20 cm ripple
Water temp8.3°C
Air temp10°C
CloudBroken
Pressure1018 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 Rainbow
When
Current conditions suit Usk Reservoir well for autumn tactics. The ripple should help fish move and feed more confidently.
Where
Start with Minkie (6-10) — on the point. Early in the day, try buzzers on a slow figure-of-eight or a booby on a fast-sink line near the bottom. Rainbows respond to more active retrieves — try short strips between pauses.
The plan
Plan A

Start with Minkie (6-10) — on the point. Early in the day, try buzzers on a slow figure-of-eight or a booby on a fast-sink line near the bottom. Rainbows respond to more active retrieves — try short strips between pauses.

Plan B

A fry-imitating pattern stripped through the margins can save a blank in autumn.

Watch for

Buzzer may strengthen through the middle of the day as conditions warm.

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 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 · October 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.

Ranked for today
Fly box · Rainbow
Bays & launches · 1
Usk Reservoir — day ticket via Fishing PassportAccess varies
Remote upland reservoir near the source of the Usk — 280 acres of stocked rainbow and brown trout fishing with fly, spinner or worm permitted.
Visit official site ↗
What's coming
Plan ahead
5-day outlook
Condition match
77%
Cloud70%
Wind65%
Temp100%

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

Other water nearby · 5
Llyn y Fan Fach
7.0 km
Brown trout
Afon Twrch
16 km
Brown trout
Brynhenllys Fishery
17 km
Brown trout
Llyn Cwm Llwch
19 km
Brown trout
Beacons Reservoir
19 km
Brown trout · Rainbow trout
Gallery · 6
  1. Usk Reservoir in Myddfai, Carmarthenshire, showing the open water body and surrounding landscape.
    Usk Reservoir
  2. A broad view across the open water of Usk Reservoir with surrounding moorland and conifer plantations.
    View across Usk Reservoir
  3. Elevated view over Usk Reservoir looking northeast, the reservoir body with woodland on the far bank.
    View over the Usk Reservoir
  4. The shallow western end of Usk Reservoir with conifer and moorland shoreline reflected in calm water.
    Western end of Usk Reservoir
  5. The concrete dam wall at the eastern end of Usk Reservoir with the reservoir water behind the structure.
    Usk Reservoir Dam
  6. Terrain map of the venue
    Terrain map
Why this score
  • Temperature (cool) is in the sweet spot for autumn fishing.
  • Buzzer is in its seasonal window, boosting the chance of targeted feeding.
  • Reservoirs of this kind fish well at this time of year.
Related guides
Big Stillwater Playbookreservoir tacticsReservoir Entomologymatching the hatchThermal Layers & Troutreading depth and temperature
Casting instructors near here
Booking & contacts
Boards & regulators