- Ecology: Moderate
- Chemical: Unknown
WFD classification · FRHR307
Rules at a glance
- Free fishing
- Fly only
Water temperature for Brown Trout
Warm — slow20°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Through the open trout season. Olives April through May; sedges through summer; small dark flies into autumn.
Where
Pool tails and pocket water through the Calvados valley. Normandy spate freestone — fish 12 to 24 hours after rain.
Method
Upstream dry to risers; dry-dropper through the riffles. The water reads clear — long leader, fine tippet. Move slowly, cast accurately.
Kit
9 ft #4 — French freestone default. Floating line, 12 ft leader to 4 to 5 lb fluoro. Studded boots.
Why this works
Water at 20.2°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Hatch timeline · todayPeak at 6am
Hatch predictions
Today's headline hatch shown — see all 3 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 3 with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Sea trout runRun
1
2
2
2
2
2
2
1
Trout seasonSeason
1
2
2
2
2
2
1
Daddy Long LegsHatch
2
3
2
Mayfly (Green Drake)Hatch
2
2
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
- AAPPMA Orne / Fédération Calvados.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 2
Water here around 20°C — probably warm enough to stress Brown Trout . These are likely cooler.
Gallery · 2
Saint-Céneri-le-Gérei, Orne, France Terrain map
Water quality (WFD)
The full read · show the working · for Brown Trout · confidence 80%
How the 22 is built — score × weight = contribution
Temperature11 × 28%3.1
Flow80 × 22%17.6
Clarity40 × 18%7.2
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity62 × 12%7.4
Limiting factor: Water temperature (20.2°C) is outside Brown Trout's preferred range (10–16°C)= 50
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Noireauproxy
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
Directions
Seasons & zones
- Sea trout 11 March → 31 October
- Trout 2nd Saturday of March → 3rd Sunday of September
Salmon: Banned (2026) — Salmon fishing is closed throughout the Seine-Normandie basin, fresh and estuarine, under the 2026–27 basin order.
Sea trout: Open (2026) — Open in Calvados. Rod catches miserable (1 in 2024) but counter data (Feuguerolles-Bully: 440 sea trout 2024) shows genuine fish presence. Borderline but evidence-backed.
Related guides
Booking & contacts
Orne
Water temperature for Brown Trout
Warm — slow20°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Through the open trout season. Olives April through May; sedges through summer; small dark flies into autumn.
Where
Pool tails and pocket water through the Calvados valley. Normandy spate freestone — fish 12 to 24 hours after rain.
Method
Upstream dry to risers; dry-dropper through the riffles. The water reads clear — long leader, fine tippet. Move slowly, cast accurately.
Kit
9 ft #4 — French freestone default. Floating line, 12 ft leader to 4 to 5 lb fluoro. Studded boots.
Why this works
Water at 20.2°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Hatch timeline · todayPeak at 6am
Hatch predictions
Today's headline hatch shown — see all 3 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 3 with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Sea trout runRun
1
2
2
2
2
2
2
1
Trout seasonSeason
1
2
2
2
2
2
1
Daddy Long LegsHatch
2
3
2
Mayfly (Green Drake)Hatch
2
2
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
- AAPPMA Orne / Fédération Calvados.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 2
Water here around 20°C — probably warm enough to stress Brown Trout . These are likely cooler.
Gallery · 2
Saint-Céneri-le-Gérei, Orne, France Terrain map
Water quality (WFD)
- Ecology: Moderate
- Chemical: Unknown
WFD classification · FRHR307
The full read · show the working · for Brown Trout · confidence 80%
How the 22 is built — score × weight = contribution
Temperature11 × 28%3.1
Flow80 × 22%17.6
Clarity40 × 18%7.2
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity62 × 12%7.4
Limiting factor: Water temperature (20.2°C) is outside Brown Trout's preferred range (10–16°C)= 50
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Noireauproxy
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
Directions
Seasons & zones
- Sea trout 11 March → 31 October
- Trout 2nd Saturday of March → 3rd Sunday of September
Salmon: Banned (2026) — Salmon fishing is closed throughout the Seine-Normandie basin, fresh and estuarine, under the 2026–27 basin order.
Sea trout: Open (2026) — Open in Calvados. Rod catches miserable (1 in 2024) but counter data (Feuguerolles-Bully: 440 sea trout 2024) shows genuine fish presence. Borderline but evidence-backed.
Related guides
Booking & contacts