A beautiful Dartmoor reservoir surrounded by conifer plantation — 30 hectares of moorland water with wild brown trout and stocked rainbows. Bank fishing only in a genuine wilderness setting. Managed by South West Lakes Trust.
- Reservoir
- Granite
How to fish it · for Rainbow
When
Current conditions suit Fernworthy Reservoir well for summer tactics. The ripple should help fish move and feed more confidently. Early morning is often the most productive window in summer — make the most of it.
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 try different depths before you change food group.
Watch for
Welshman's Button should come on through the afternoon as the water warms.
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 with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 5 with Pro.
Start free trial14-day free trial. Cancel anytime.
Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
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 Fernworthy Reservoir — wind, cloud and temperature all line up.
Other water nearby · 5
Gallery · 2
Reservoir (44030576234) Terrain map
About this water
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.
Directions
Seasons & zones
- Trout 1 April → 30 September
Related guides
Casting instructors near here
Booking & contacts
Clubs & associations
Fernworthy Reservoir
A beautiful Dartmoor reservoir surrounded by conifer plantation — 30 hectares of moorland water with wild brown trout and stocked rainbows.
How to fish it · for Rainbow
When
Current conditions suit Fernworthy Reservoir well for summer tactics. The ripple should help fish move and feed more confidently. Early morning is often the most productive window in summer — make the most of it.
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 try different depths before you change food group.
Watch for
Welshman's Button should come on through the afternoon as the water warms.
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 with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 5 with Pro.
Start free trial14-day free trial. Cancel anytime.
Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
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 Fernworthy Reservoir — wind, cloud and temperature all line up.
Other water nearby · 5
Gallery · 2
Reservoir (44030576234) Terrain map
About this water
A beautiful Dartmoor reservoir surrounded by conifer plantation — 30 hectares of moorland water with wild brown trout and stocked rainbows. Bank fishing only in a genuine wilderness setting. Managed by South West Lakes Trust.
- Reservoir
- Granite
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.
Directions
Seasons & zones
- Trout 1 April → 30 September
Related guides
Casting instructors near here
Booking & contacts
Clubs & associations