Stoneflies
Gammarids
Marble trout, brown trout, and grayling present. Dam-regulated sections shape the flow pattern.
- Limestone
Rules at a glance
- Licence required
Water temperature for Grayling
Ideal6°C est.ideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
Autumn into late autumn — September through November is prime. Check the FIPSAS regional permit for current grayling season dates.
Where
Faster gravel runs in the middle and lower river. Deeper glide tails as autumn cold pushes fish deeper.
Method
Euro-nymphing primary — Perdigons and small dropper nymphs through the pocket water. Switch to dries when sedges or olives come off in autumn afternoons.
Kit
10 ft #3 nymphing rod, 4 to 5 lb fluoro tippet; 9 ft #4 for dries. 12 ft leader. Studded boots.
Likely species
Hatch timeline · todayPeak at 11am
Hatch predictions
Today's headline hatch shown — see all 5 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 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Supporters see what else is on the menu.
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 · November 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
Late March BrownHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Grayling fly box
A fuller Italian trout and grayling box for the southern Alps and northern limestone/alpine systems. It keeps the marble-trout streamer accent, but adds proper grayling dries and bugs, competition nymphs, caddis/olive work, terrestrials, pocket-water dries and alpine lake patterns.
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 · 2
Terrain map
About this water
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · IT22E200000000090TN
The full read · show the working · for Grayling · confidence 90%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time95 × 13%12.4
Pressure80 × 7%5.6
Insect activity55 × 12%6.6
Conditions total= 86
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
Directions
Seasons & zones
- Trout 2026-02-15 → 2026-10-07
- Grayling varies_by_water → varies_by_water
Italian Alpine grayling (temolo) — season varies by zona and managed by Trentino associations. Many grayling sections are no-retention or have strict seasonal restrictions. Check with local association or pescatrentino.it for specific Chiese/Val del Chiese section rules before fishing.
Rules are set at province or association level — check locally.
- Marble trout 2026-03-01 → 2026-09-30
Related guides
Booking & contacts
Chiese
Limestone river flowing south from Trentino through the Val del Chiese with clear water that demands technical fishing.
Water temperature for Grayling
Ideal6°C est.ideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
Autumn into late autumn — September through November is prime. Check the FIPSAS regional permit for current grayling season dates.
Where
Faster gravel runs in the middle and lower river. Deeper glide tails as autumn cold pushes fish deeper.
Method
Euro-nymphing primary — Perdigons and small dropper nymphs through the pocket water. Switch to dries when sedges or olives come off in autumn afternoons.
Kit
10 ft #3 nymphing rod, 4 to 5 lb fluoro tippet; 9 ft #4 for dries. 12 ft leader. Studded boots.
Likely species
Hatch timeline · todayPeak at 11am
Hatch predictions
Today's headline hatch shown — see all 5 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 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Supporters see what else is on the menu.
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 · November 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
Late March BrownHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Grayling fly box
A fuller Italian trout and grayling box for the southern Alps and northern limestone/alpine systems. It keeps the marble-trout streamer accent, but adds proper grayling dries and bugs, competition nymphs, caddis/olive work, terrestrials, pocket-water dries and alpine lake patterns.
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 · 2
Terrain map
About this water
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 Grayling · confidence 90%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time95 × 13%12.4
Pressure80 × 7%5.6
Insect activity55 × 12%6.6
Conditions total= 86
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
Directions
Seasons & zones
- Trout 2026-02-15 → 2026-10-07
- Grayling varies_by_water → varies_by_water
Italian Alpine grayling (temolo) — season varies by zona and managed by Trentino associations. Many grayling sections are no-retention or have strict seasonal restrictions. Check with local association or pescatrentino.it for specific Chiese/Val del Chiese section rules before fishing.
Rules are set at province or association level — check locally.
- Marble trout 2026-03-01 → 2026-09-30
Related guides
Booking & contacts
At a glance
Chiese is a freestone river in Trentino-Alto Adige / Lombardy, Italy. The catchment geology is recorded as limestone, and the water sits at about 466 m above sea level. Species listed for this water: brown trout, marble trout and grayling. The trout season is recorded as running from 15 February to 7 October. The marble trout season is recorded as running from 1 March to 30 September. Best window recorded for anglers: Spring (March–May) and autumn (September–November). Core methods listed: Nymph; Dry fly; Streamer. Level and flow data for this water is linked from 1 gauge. Its Water Framework Directive ecological status is recorded as good. Nearby waters in our listings include Sarca at 27 km, Oglio (Val Camonica) at 28 km and Lake Molveno at 35 km.