Rules at a glance
- Free fishing
- Fly only
Water temperature for Brown Trout
Ideal12°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Through the Veneto trout season, 7 March to 28 September. This high, cold water fishes well through the middle of the day more often than the lower valley rivers — the elevation keeps it cool even in summer.
Where
Tight pockets behind boulders and the short pools between them, through the spruce-forest corridors around Cortina and down through the Cadore valley toward Perarolo.
Method
Short-line nymph through the broken pocket water — the Boite is narrow enough that a long cast is rarely the answer. Dry-dropper works well on the calmer stretches. Single barbless on No-Kill water.
Kit
8.5 to 9 ft #3/4 for a small, technical mountain torrent. Floating line, 9 to 12 ft leader to 5X. Studded boots for the glacial boulder-and-cobble bed.
Why this works
Excellent — water temperature is right today, though time of day could be better.
Likely species
Mayflies
Mayflies- Blue-winged oliveMost likely#16–18 · DunDuns are up; a sherry spinner fall may follow.
- Large dark oliveAlso possible#14–16 · EmergerDead-drift the emerger — it's sitting in the film.
- Anglers curse mayfliesAlso possibleLower confidenceNearest relative#20–22 · SpinnerGo tiny: 20-22 spent spinner, single fly, long tippet.
- Turkey BrownAlso possibleLower confidence#14–16 · DunSmall spring dun on slower glides and margins.
Caddisflies
Caddisflies- Saddle-case CaddisMost likelyLower confidenceNearest relative#16–18 · AdultTiny blackish caddis; fast riffles, early summer.
- CapererAlso possibleLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
- Green SedgeAlso possibleLower confidenceNearest relative#10–12–14–16 · NymphFree-living green caddis larva; fast stony riffles.
- Net-spinning caddis (S. Europe)Also possibleLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
Stoneflies
Stoneflies- NeedleflyMost likelyLower confidenceNearest relative#16–18 · AdultSmall slender stonefly; clean, cold headwater riffles.
- Little Brown StoneAlso possibleLower confidence#16–18 · AdultSmall dark stone nymph or adult in early spring.
Hatch timeline · todayPeak at 13 Uhr
Hatch predictions
Today's headline hatch shown — see all 12 active hatches hour by hour as a supporter.
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Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 guilds as a supporter.
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Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 4 as a supporter.
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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
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Brown Trout
18-22 · Pattern
Upstream dry, in the film
Permits & access
Permit required — see local rules.
- Veneto Regolamento Regionale 1/2023 art
- 29: trout and marble trout open 7 March-28 September 2026 (min
- 22cm fario)
- Marble trout retention is prohibited year-round under art
- 11 comma 2, regardless of season
- Barbless single hook standard on No-Kill and RPS water.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Terrain map
The full read · show the working · for Brown Trout · confidence 90%
How the 84 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity72 × 12%8.6
Conditions total= 84
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 2026-03-07 → 2026-09-28
- Marble trout 2026-03-07 → 2026-09-28
Related guides
Booking & contacts
Boite
Water temperature for Brown Trout
Ideal12°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Through the Veneto trout season, 7 March to 28 September. This high, cold water fishes well through the middle of the day more often than the lower valley rivers — the elevation keeps it cool even in summer.
Where
Tight pockets behind boulders and the short pools between them, through the spruce-forest corridors around Cortina and down through the Cadore valley toward Perarolo.
Method
Short-line nymph through the broken pocket water — the Boite is narrow enough that a long cast is rarely the answer. Dry-dropper works well on the calmer stretches. Single barbless on No-Kill water.
Kit
8.5 to 9 ft #3/4 for a small, technical mountain torrent. Floating line, 9 to 12 ft leader to 5X. Studded boots for the glacial boulder-and-cobble bed.
Why this works
Excellent — water temperature is right today, though time of day could be better.
Likely species
Mayflies
- Blue-winged oliveMost likely#16–18 · DunDuns are up; a sherry spinner fall may follow.
- Large dark oliveAlso possible#14–16 · EmergerDead-drift the emerger — it's sitting in the film.
- Anglers curse mayfliesAlso possibleLower confidenceNearest relative#20–22 · SpinnerGo tiny: 20-22 spent spinner, single fly, long tippet.
- Turkey BrownAlso possibleLower confidence#14–16 · DunSmall spring dun on slower glides and margins.
Caddisflies
- Saddle-case CaddisMost likelyLower confidenceNearest relative#16–18 · AdultTiny blackish caddis; fast riffles, early summer.
- CapererAlso possibleLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
- Green SedgeAlso possibleLower confidenceNearest relative#10–12–14–16 · NymphFree-living green caddis larva; fast stony riffles.
- Net-spinning caddis (S. Europe)Also possibleLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
Stoneflies
- NeedleflyMost likelyLower confidenceNearest relative#16–18 · AdultSmall slender stonefly; clean, cold headwater riffles.
- Little Brown StoneAlso possibleLower confidence#16–18 · AdultSmall dark stone nymph or adult in early spring.
Hatch timeline · todayPeak at 13 Uhr
Hatch predictions
Today's headline hatch shown — see all 12 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.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 4 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
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Brown Trout
18-22 · Pattern
Upstream dry, in the film
Permits & access
Permit required — see local rules.
- Veneto Regolamento Regionale 1/2023 art
- 29: trout and marble trout open 7 March-28 September 2026 (min
- 22cm fario)
- Marble trout retention is prohibited year-round under art
- 11 comma 2, regardless of season
- Barbless single hook standard on No-Kill and RPS water.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Terrain map
The full read · show the working · for Brown Trout · confidence 90%
How the 84 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity72 × 12%8.6
Conditions total= 84
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 2026-03-07 → 2026-09-28
- Marble trout 2026-03-07 → 2026-09-28
Related guides
Booking & contacts