A small, 1.7-hectare still water created by the Colpo AAPPMA in the Morbihan and stocked with rainbow trout for fly fishing. It is a tidy, accessible water rather than a wild one — the kind of place to learn still-water tactics or fish a short evening without committing to a river. A carte de pêche covers it; the rules are the association's own, so check before you go.
Rules at a glance
- Permit required
A patient day, if you fancy it
Useful ripple, fishable wave. Take your time — read the water before you cast.
43% confidence — limited data
Live now
Conditions on the water
Trends shown where the gauge supports them
Wind
W 15 km/h
Gentle breeze
Wave
20 cm ripple
Water temp
—
No reading
Air temp
12°C
Cloud
Broken
Pressure
1021 hPa
Rain · 24h
0.0 mm
No rain
Some readings unavailable — check directly before fishing.
How to fish · for rainbow trout
The brief
When · where · method · kit
How to fish it · for rainbow trout
When
March–June, then September
Where
Set up a broadside drift and cover the water systematically. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.
Today's tactical plan
The plan
Plan A · Plan B · what to watch · bank or boat
The plan
Plan A
Set up a broadside drift and cover the water systematically. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.
Plan B
Fish early and late, try deeper during the heat of the day with a fast-sinking line.
Watch for
Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.
Bank
Bank fishing near inflows, dam walls, and weed beds. Move to find feeding fish.
Hatches & runs
What's on, when
Twelve months at a glance
Through the year
0–3 scale · June highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Reservoir BuzzerHatch
2
3
3
3
3
3
2
Gray DrakeHatch
2
2
Silverhorns & LonghornsHatch
1
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Today's fly · curated pack
Top pattern + the box
4 patterns from this venue's curated pack
Evidence
Why today scores what it does
The factors driving today's verdict
Why this score
- summer conditions with cloud skies and breezy wind.
About this water · Lough note · 4 min read
About this water
Parc Er Bihan (Colpo), on the water
Field guide · contributor-editedParc Er Bihan (Colpo) · about
What this water is
Background · character · contributors
About this water
A small, 1.7-hectare still water created by the Colpo AAPPMA in the Morbihan and stocked with rainbow trout for fly fishing. It is a tidy, accessible water rather than a wild one — the kind of place to learn still-water tactics or fish a short evening without committing to a river. A carte de pêche covers it; the rules are the association's own, so check before you go.
- Fishery
- Granite
Parc Er Bihan (Colpo) · directions
How to get to the water
Directions
Parc Er Bihan (Colpo) · zones
Where the rules change
Seasons · zones · per-species rules
Seasons & zones
- Trout2nd Saturday of March → 3rd Sunday of September
Parc Er Bihan (Colpo) · permits
Good to know
Permits & access
Permit required — see local rules.
- Carte de pêche
- Small association fly reservoir.
Parc Er Bihan (Colpo) · learn
Related guides
Learn-zone playbooks for this water
Related guides
Parc Er Bihan (Colpo)
A small, 1.
Species
A patient day, if you fancy it
Useful ripple, fishable wave. Take your time — read the water before you cast.
43% confidence — limited data
Conditions
Wind
W 15 km/h
Gentle breeze
Wave
20 cm ripple
Water temp
—
No reading
Air temp
12°C
Cloud
Broken
Pressure
1021 hPa
Rain · 24h
0.0 mm
No rain
Some readings unavailable — check directly before fishing.
Condition match
54%
Cloud70%
Wind65%
Temp25%
A reasonable day here, though temperature isn't quite in the sweet spot.
How to fish it · for rainbow trout
When
March–June, then September
Where
Set up a broadside drift and cover the water systematically. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.
The plan
Plan A
Set up a broadside drift and cover the water systematically. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.
Plan B
Fish early and late, try deeper during the heat of the day with a fast-sinking line.
Watch for
Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.
Bank
Bank fishing near inflows, dam walls, and weed beds. Move to find feeding fish.
Why this score
- summer conditions with cloud skies and breezy wind.
Through the year
0–3 scale · June highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Reservoir BuzzerHatch
2
3
3
3
3
3
2
Gray DrakeHatch
2
2
Silverhorns & LonghornsHatch
1
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Permits & access
Permit required — see local rules.
- Carte de pêche
- Small association fly reservoir.
Directions
About this water
A small, 1.7-hectare still water created by the Colpo AAPPMA in the Morbihan and stocked with rainbow trout for fly fishing. It is a tidy, accessible water rather than a wild one — the kind of place to learn still-water tactics or fish a short evening without committing to a river. A carte de pêche covers it; the rules are the association's own, so check before you go.
- Fishery
- Granite
Seasons & zones
- Trout2nd Saturday of March → 3rd Sunday of September
About this water · Lough note · 4 min read
A small, 1.7-hectare still water created by the Colpo AAPPMA in the Morbihan and stocked with rainbow trout for fly fishing. It is a tidy, accessible water rather than a wild one — the kind of place to learn still-water tactics or fish a short evening without committing to a river. A carte de pêche covers it; the rules are the association's own, so check before you go.
Other water nearby · 3
Related guides