Mayflies
Stoneflies
Caddisflies
Gammarids
- Ecology: Moderate
- Chemical: Good
WFD classification · FRDR265
Rules at a glance
- Permit required
- 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 open trout season — late spring through autumn close. The Verdon upper runs cold and clear; fish once meltwater eases.
Where
Pool tails and pocket water through the Colmars-Castellane upper Verdon stretches. Haute-Provence freestone, intimate scale.
Method
Upstream dry to risers; dry-dropper through the riffles. The water reads clear — long leader, fine tippet. Move slowly, cast accurately.
Kit
8'6 ft #3 to 9 ft #4 — small mountain stream. Floating line, 9 to 12 ft leader to 4 lb fluoro. Studded boots.
Likely species
Caddisflies
Hatch timeline · tomorrowPeak at 18:00
12:00(now) — Autumn Olive
Stage: On emergersApproach: Emerger or dryActivity: 49%
Also:Black Gnat37%Autumn Needle Fly36%
Peak emergence windowWeather boost9 food groups active
Peak activity at 18:00 — Caperer (Caperer, Weather boost)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 3 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 · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
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
Permits & access
Permit required — see local rules.
- AAPPMA Alpes-de-Haute-Provence
- Several no-kill reserves above Colmars
- Fly-only in sections.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Gallery · 2
DSC00002 - VERDON SCHLUCHT (F) Terrain map
Water quality (WFD)
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity69 × 12%8.3
Conditions total= 87
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Arcproxy
Prey activitysurvey-backed invertebrate datasurvey
Directions
Seasons & zones
- Trout 2.º Saturday de March → 3.º Sunday de September
Related guides
Booking & contacts
Verdon (Upper, Colmars–Castellane)
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 open trout season — late spring through autumn close. The Verdon upper runs cold and clear; fish once meltwater eases.
Where
Pool tails and pocket water through the Colmars-Castellane upper Verdon stretches. Haute-Provence freestone, intimate scale.
Method
Upstream dry to risers; dry-dropper through the riffles. The water reads clear — long leader, fine tippet. Move slowly, cast accurately.
Kit
8'6 ft #3 to 9 ft #4 — small mountain stream. Floating line, 9 to 12 ft leader to 4 lb fluoro. Studded boots.
Likely species
Caddisflies
Hatch timeline · tomorrowPeak at 18:00
12:00(now) — Autumn Olive
Stage: On emergersApproach: Emerger or dryActivity: 49%
Also:Black Gnat37%Autumn Needle Fly36%
Peak emergence windowWeather boost9 food groups active
Peak activity at 18:00 — Caperer (Caperer, Weather boost)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 3 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 · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
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
Permits & access
Permit required — see local rules.
- AAPPMA Alpes-de-Haute-Provence
- Several no-kill reserves above Colmars
- Fly-only in sections.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Gallery · 2
DSC00002 - VERDON SCHLUCHT (F) Terrain map
Water quality (WFD)
- Ecology: Moderate
- Chemical: Good
WFD classification · FRDR265
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity69 × 12%8.3
Conditions total= 87
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Arcproxy
Prey activitysurvey-backed invertebrate datasurvey
Directions
Seasons & zones
- Trout 2.º Saturday de March → 3.º Sunday de September
Related guides
Booking & contacts