Valsugana river wider than many Trentino streams, offering mixed runs, pools and riffles where brown trout and marble trout hold. Good fly water when levels settle. Grayling in some sections too—a river of varied character.
- Limestone
Water temperature for brown trout
Warm — slow19°C est.ideal 10–16°C
0°14°28°
How to fish it · for brown trout
When
Through the Italian trout season — afternoon hatches in spring; sedges through summer; small dark flies into autumn. Valsugana fishes lower elevation than the upper Trentino rivers.
Where
Pool tails and the deeper edges of pockets through the Valsugana stretches. The Brenta widens through the lower valley into longer glides.
Method
Upstream nymph through the broken water; dry to risers in the glides. Italian No-Kill stretches mandate single barbless — comply or fish elsewhere.
Kit
9 to 10 ft #4 for medium freestone with Alpine clarity. Floating line, 12 ft leader to 4 to 5 lb fluoro. Studded boots — Alpine cobble runs slick.
Why this works
⚠️ Water at 18.9°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise poor — water clarity is in the right range.
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 6 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
ModelledModerate confidence
Modelled from regional ecology — no survey or occurrence data for this water yet.
Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Alpine RhithrogenaHatch
2
3
3
2
Sculpin / Baitfish (Rivers)Hatch
2
3
3
3
3
3
3
3
2
March BrownHatch
2
3
2
Large StoneflyHatch
2
3
2
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.
- Italian fishing license (permesso di pesca) varies by provincia (province)
- Barbless hooks often required on protected waters
- Catch limits may apply.
What's coming
Plan ahead
5-day outlook
Water here around 19°C. Nothing cooler within range — carry a thermometer.
About this water
Water quality (WFD)
- Ecology: Moderate
- Chemical: Unknown
WFD classification · ITARW03BB13600020TN
The full read · show the working · for brown trout · confidence 80%
How the 34 is built — score × weight = contribution
Temperature41 × 28%11.5
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity62 × 12%7.4
Conditions total= 68
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
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
- Trout2026-02-15 → 2026-10-07
- Graylingvaries_by_water → varies_by_water
- Marble trout2026-03-01 → 2026-09-30
Related guides
Booking & contacts
Brenta (Trentino)
Terrain map
Valsugana river wider than many Trentino streams, offering mixed runs, pools and riffles where brown trout and marble trout hold.
Water temperature for brown trout
Warm — slow19°C est.ideal 10–16°C
0°14°28°
How to fish it · for brown trout
When
Through the Italian trout season — afternoon hatches in spring; sedges through summer; small dark flies into autumn. Valsugana fishes lower elevation than the upper Trentino rivers.
Where
Pool tails and the deeper edges of pockets through the Valsugana stretches. The Brenta widens through the lower valley into longer glides.
Method
Upstream nymph through the broken water; dry to risers in the glides. Italian No-Kill stretches mandate single barbless — comply or fish elsewhere.
Kit
9 to 10 ft #4 for medium freestone with Alpine clarity. Floating line, 12 ft leader to 4 to 5 lb fluoro. Studded boots — Alpine cobble runs slick.
Why this works
⚠️ Water at 18.9°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise poor — water clarity is in the right range.
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 6 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
ModelledModerate confidence
Modelled from regional ecology — no survey or occurrence data for this water yet.
Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Alpine RhithrogenaHatch
2
3
3
2
Sculpin / Baitfish (Rivers)Hatch
2
3
3
3
3
3
3
3
2
March BrownHatch
2
3
2
Large StoneflyHatch
2
3
2
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.
- Italian fishing license (permesso di pesca) varies by provincia (province)
- Barbless hooks often required on protected waters
- Catch limits may apply.
What's coming
Plan ahead
5-day outlook
Water here around 19°C. Nothing cooler within range — carry a thermometer.
About this water
Valsugana river wider than many Trentino streams, offering mixed runs, pools and riffles where brown trout and marble trout hold. Good fly water when levels settle. Grayling in some sections too—a river of varied character.
- Limestone
Water quality (WFD)
- Ecology: Moderate
- Chemical: Unknown
WFD classification · ITARW03BB13600020TN
The full read · show the working · for brown trout · confidence 80%
How the 34 is built — score × weight = contribution
Temperature41 × 28%11.5
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity62 × 12%7.4
Conditions total= 68
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
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
- Trout2026-02-15 → 2026-10-07
- Graylingvaries_by_water → varies_by_water
- Marble trout2026-03-01 → 2026-09-30
Related guides
Booking & contacts