Rules at a glance
- Free fishing
- Fly only
Water temperature for Brown Trout
Warm — slow18°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 — but remember Bacino 5 closes fishing on Tuesdays and Fridays regardless. Afternoon hatches build through spring; dawn and dusk once the Agordino valley warms up in summer.
Where
Pocket water and boulder-strewn runs below the Lago di Alleghe dam, opening into longer pools as the valley widens toward Agordo and on down to the Piave confluence.
Method
Upstream nymph through the broken pocket water; dry fly to risers where the current settles into glides. Single barbless hook, and remember the season cap of 100 salmonids across the whole basin.
Kit
9 to 10 ft #4 for medium freestone water with Dolomite clarity. Floating line, 12 ft leader to 4 to 5 lb fluoro. Studded boots for the gorge cobble.
Why this works
Water at 18.2°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
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 confidence#20–22 · SpinnerGo tiny: 20-22 spent spinner, single fly, long tippet.
Caddisflies
Caddisflies- Net-spinning caddis (S. Europe)Most likelyLower confidence#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- Satin sedgeAlso possibleLower confidence#12–14 · Egg-layingSkitter it at dusk — this one's fished, not dead-drifted.
Hatch timeline · todayQuiet day
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.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 2 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
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brown Trout fly box
12-16 · Pattern
Upstream dry, on top
6-10 · Pattern
Swing, sub-surface
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
- Bacino di pesca 5 (Agordino) additionally closes Tuesdays and Fridays, caps the season at 100 salmonids per angler, bans multi-hook lures and dead-fish bait (except at Lago di Cavia/Coldai), and permits one rod only across the whole basin
What's coming
Plan ahead
5-day outlook
Water here around 18°C. Nothing cooler within range — carry a thermometer.
The full read · show the working · for Brown Trout · confidence 90%
How the 39 is built — score × weight = contribution
Temperature53 × 28%14.8
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity67 × 12%8.0
Conditions total= 71
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
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
Cordevole
Water temperature for Brown Trout
Warm — slow18°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 — but remember Bacino 5 closes fishing on Tuesdays and Fridays regardless. Afternoon hatches build through spring; dawn and dusk once the Agordino valley warms up in summer.
Where
Pocket water and boulder-strewn runs below the Lago di Alleghe dam, opening into longer pools as the valley widens toward Agordo and on down to the Piave confluence.
Method
Upstream nymph through the broken pocket water; dry fly to risers where the current settles into glides. Single barbless hook, and remember the season cap of 100 salmonids across the whole basin.
Kit
9 to 10 ft #4 for medium freestone water with Dolomite clarity. Floating line, 12 ft leader to 4 to 5 lb fluoro. Studded boots for the gorge cobble.
Why this works
Water at 18.2°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
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 confidence#20–22 · SpinnerGo tiny: 20-22 spent spinner, single fly, long tippet.
Caddisflies
- Net-spinning caddis (S. Europe)Most likelyLower confidence#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- Satin sedgeAlso possibleLower confidence#12–14 · Egg-layingSkitter it at dusk — this one's fished, not dead-drifted.
Hatch timeline · todayQuiet day
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.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 2 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
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brown Trout fly box
12-16 · Pattern
Upstream dry, on top
6-10 · Pattern
Swing, sub-surface
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
- Bacino di pesca 5 (Agordino) additionally closes Tuesdays and Fridays, caps the season at 100 salmonids per angler, bans multi-hook lures and dead-fish bait (except at Lago di Cavia/Coldai), and permits one rod only across the whole basin
What's coming
Plan ahead
5-day outlook
Water here around 18°C. Nothing cooler within range — carry a thermometer.
The full read · show the working · for Brown Trout · confidence 90%
How the 39 is built — score × weight = contribution
Temperature53 × 28%14.8
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity67 × 12%8.0
Conditions total= 71
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
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