Limestone river flowing south from Trentino through the Val del Chiese with clear water that demands technical fishing. Marble trout, brown trout, and grayling present. Dam-regulated sections shape the flow pattern.
- Limestone
Water temperature for brown trout
Ideal15°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 evenings; small dark flies into autumn.
Where
Pool tails and the deeper edges of pockets through the upper river; the lower Chiese widens into longer glides as it crosses into Lombardy.
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
Excellent — conditions well-balanced, with water temperature particularly in your favour.
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 11 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
Other water nearby · 5
Gallery · 1
Terrain map
About this water
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · IT22E200000000090TN
The full read · show the working · for brown trout · confidence 90%
How the 86 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity69 × 12%8.3
Conditions total= 86
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
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
Chiese
Google Places
Limestone river flowing south from Trentino through the Val del Chiese with clear water that demands technical fishing.
Water temperature for brown trout
Ideal15°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 evenings; small dark flies into autumn.
Where
Pool tails and the deeper edges of pockets through the upper river; the lower Chiese widens into longer glides as it crosses into Lombardy.
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
Excellent — conditions well-balanced, with water temperature particularly in your favour.
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 11 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
Other water nearby · 5
Gallery · 1
Terrain map
About this water
Limestone river flowing south from Trentino through the Val del Chiese with clear water that demands technical fishing. Marble trout, brown trout, and grayling present. Dam-regulated sections shape the flow pattern.
- Limestone
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · IT22E200000000090TN
The full read · show the working · for brown trout · confidence 90%
How the 86 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity69 × 12%8.3
Conditions total= 86
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
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