Stillwater · Peat · North East / County Durham

Grassholme Reservoir

Grassholme Reservoir venue image
Google Places

A medium reservoir in Upper Teesdale, set in the moorland above Barnard Castle with four miles of bank and a series of bays and inlets that give it more edge than a single-basin water of the same size.

Good · Rainbow
Diawl Bach · 12-14
Goodlive now
Evening session looks promising at Grassholme Reservoir
Glassy and bright — hard work without a breeze. Take your time — read the water before you cast.
68% confidence
What moved it
  • WindW 5 km/hCalm
Today’s fly
Diawl Bach
Diawl Bach12-14
Washing-line, sub-surface
Conditions on the water
Live gauge
Wind
Calm
W 5 km/h
N
W
from the west
WaveFlat calm
Water temp
Air temp13°C
CloudBroken
Pressure1020 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for rainbow
When
May–September
Where
Start with Marabou Damsel (8-12) — on the point. Rainbows respond to more active retrieves — try short strips between pauses. If that does not produce, switch depth or speed before changing the pattern entirely.
The plan
Plan A

Start with Marabou Damsel (8-12) — on the point. Rainbows respond to more active retrieves — try short strips between pauses. If that does not produce, switch depth or speed before changing the pattern entirely.

Plan B

If the main plan stalls, drop to a size 14–16 midge — switch to a washing-line or suspender rig and change drift line before you change food group.

Watch for

Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.

Either bank or boat

Calm evenings can fish well from bank or boat — target rising fish wherever you find them.

Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Daphnia SwarmHatch
2
3
3
3
2
Daddy Long LegsHatch
2
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
Rainbow fly box
What's coming
Plan ahead
5-day outlook
Condition match
86%
Cloud100%
Wind65%
Temp100%

Conditions are ideal for Grassholme Reservoir — wind, cloud and temperature all line up.

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

A medium reservoir in Upper Teesdale, set in the moorland above Barnard Castle with four miles of bank and a series of bays and inlets that give it more edge than a single-basin water of the same size. Fly and bait both allowed; locally farmed stock with the occasional tagged fish carrying a cash prize.

  • Reservoir
  • Peat
Why this score
  • Cloud cover (cloud) suits the fishery well.
  • Temperature (cool) is in the sweet spot for summer fishing.
  • Buzzer is in its seasonal window, boosting the chance of targeted feeding.
Related guides
Booking & contacts