Rules at a glance
- Free fishing
Water temperature for Rainbow Trout
Cool — slow8°C est.ideal 10–18°C
0°14°28°
How to fish it · for Rainbow Trout
When
Stocked weekly, so the best fishing often follows a fresh drop — ask locally or simply fish soon after the season opens on 18 April. Runs to 14 October, dawn to dusk, seven days a week.
Where
The two-kilometre reserve between the old Brun intake and the Mellier canal — deep pools alternating with longer shallow glides, typical steep-valley torrent structure.
Method
Nothing fussy — spinner, bait or fly all take fish here, and there's no catch-and-release requirement. Minimum size 25cm, six fish per permit, up to three permits a day.
Kit
9 ft #5/6 for a small mountain torrent. Nymph or small streamer on a floating line covers most of the water.
Why this works
Good — water clarity is working for you, but insect activity is the limiting factor today.
Likely species
Mayflies
Mayflies- Large dark oliveMost likely#14–16 · EmergerDead-drift the emerger — it's sitting in the film.
- Turkey BrownAlso possibleLower confidence#14–16 · DunSmall spring dun on slower glides and margins.
- Ephemera vulgata (lake mayfly)Also possibleLower confidenceNearest relative#8–10–12 · NymphLarge lake/slow-river mayfly; burrows soft sediment.
- Late March BrownAlso possibleLower confidence#12–14 · DunLate-season upland riffle dun, dusk emergence.
Caddisflies
Caddisflies- Net-spinning caddis (S. Europe)Most likelyLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- CapererAlso possibleLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
Stoneflies
Stoneflies- Little Brown StoneMost likelyLower confidence#16–18 · AdultSmall dark stone nymph or adult in early spring.
- NeedleflyAlso possibleLower confidenceNearest relative#16–18 · AdultSmall slender stonefly; clean, cold headwater riffles.
Hatch timeline · todayPeak at 10:00
Hatch predictions
Today's headline hatch shown — see all 7 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 guilds as a supporter.
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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Rainbow Trout
8-12 · Pattern
Retrieve, sub-surface
Permits & access
Permit required — see local rules.
- Managed tourist reserve (riserva a cattura) — daily permit required, weekly stocking
- Minimum size 25cm, 6 fish per permit, maximum 3 permits per angler per day
- No catch-and-release requirement.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Gallery · 2
Terrain map
The full read · show the working · for Rainbow Trout · confidence 75%
How the 65 is built — score × weight = contribution
Temperature59 × 28%16.5
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time45 × 13%5.9
Pressure75 × 7%5.3
Insect activity40 × 12%4.8
Conditions total= 65
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Warmer water — toward the 10–18 °C ideal band — would lift the temperature score.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Rainbow trout 2026-04-18 → 2026-10-14
Related guides
Booking & contacts
Ayasse
Water temperature for Rainbow Trout
Cool — slow8°C est.ideal 10–18°C
0°14°28°
How to fish it · for Rainbow Trout
When
Stocked weekly, so the best fishing often follows a fresh drop — ask locally or simply fish soon after the season opens on 18 April. Runs to 14 October, dawn to dusk, seven days a week.
Where
The two-kilometre reserve between the old Brun intake and the Mellier canal — deep pools alternating with longer shallow glides, typical steep-valley torrent structure.
Method
Nothing fussy — spinner, bait or fly all take fish here, and there's no catch-and-release requirement. Minimum size 25cm, six fish per permit, up to three permits a day.
Kit
9 ft #5/6 for a small mountain torrent. Nymph or small streamer on a floating line covers most of the water.
Why this works
Good — water clarity is working for you, but insect activity is the limiting factor today.
Likely species
Mayflies
- Large dark oliveMost likely#14–16 · EmergerDead-drift the emerger — it's sitting in the film.
- Turkey BrownAlso possibleLower confidence#14–16 · DunSmall spring dun on slower glides and margins.
- Ephemera vulgata (lake mayfly)Also possibleLower confidenceNearest relative#8–10–12 · NymphLarge lake/slow-river mayfly; burrows soft sediment.
- Late March BrownAlso possibleLower confidence#12–14 · DunLate-season upland riffle dun, dusk emergence.
Caddisflies
- Net-spinning caddis (S. Europe)Most likelyLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- CapererAlso possibleLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
Stoneflies
- Little Brown StoneMost likelyLower confidence#16–18 · AdultSmall dark stone nymph or adult in early spring.
- NeedleflyAlso possibleLower confidenceNearest relative#16–18 · AdultSmall slender stonefly; clean, cold headwater riffles.
Hatch timeline · todayPeak at 10:00
Hatch predictions
Today's headline hatch shown — see all 7 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 guilds as a supporter.
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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Rainbow Trout
8-12 · Pattern
Retrieve, sub-surface
Permits & access
Permit required — see local rules.
- Managed tourist reserve (riserva a cattura) — daily permit required, weekly stocking
- Minimum size 25cm, 6 fish per permit, maximum 3 permits per angler per day
- No catch-and-release requirement.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Gallery · 2
Terrain map
The full read · show the working · for Rainbow Trout · confidence 75%
How the 65 is built — score × weight = contribution
Temperature59 × 28%16.5
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time45 × 13%5.9
Pressure75 × 7%5.3
Insect activity40 × 12%4.8
Conditions total= 65
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Warmer water — toward the 10–18 °C ideal band — would lift the temperature score.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Rainbow trout 2026-04-18 → 2026-10-14
Related guides
Booking & contacts