- Ecology: Good
- Chemical: Unknown
WFD classification · ES018MSPFES197MAR001750
Rules at a glance
- Public water
- Licence required
Water temperature for Brown Trout
Warm — slow21°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Water at 21.1°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Hatch timeline · todayPeak at 11am
Hatch predictions
Today's headline hatch shown — see all 2 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 3 with Pro.
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 · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
March BrownHatch
2
3
2
Late March BrownHatch
2
3
2
Large Brook DunHatch
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
22-24 · Pattern
Upstream dry, on top
Beats · 1
Navelgas · 2.0 kmC&R trout
C&R trout stretch — Puente de La Carrizal to 50 m aguas arriba del banzao del caserío de Vichavera.
Beat detail
Daily permit required, all fish returned
Upstream: Puente de La Carrizal
Downstream: 50 m aguas arriba del banzao del caserío de Vichavera
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
- Se requiere licencia de pesca asturiana
- En 2026 muchas aguas trucheras llegan hasta el 15 de agosto, pero las zonas de salmón, las zonas de montaña, los tramos sin muerte y los tramos fronterizos pueden variar
- Consulta las normas del coto y del tramo local antes de pescar.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 1
Water here around 21°C — probably warm enough to stress Brown Trout . These are likely cooler.
Gallery · 1
Terrain map
Water quality (WFD)
The full read · show the working · for Brown Trout · confidence 80%
How the 0 is built — score × weight = contribution
Temperature5 × 28%1.4
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity63 × 12%7.6
Limiting factor: Water temperature (21.1°C) is outside Brown Trout's preferred range (10–16°C)= 55
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
Directions
Related guides
Booking & contacts
Río Navelgas
Water temperature for Brown Trout
Warm — slow21°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Water at 21.1°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Hatch timeline · todayPeak at 11am
Hatch predictions
Today's headline hatch shown — see all 2 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 3 with Pro.
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 · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
March BrownHatch
2
3
2
Late March BrownHatch
2
3
2
Large Brook DunHatch
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
22-24 · Pattern
Upstream dry, on top
Beats · 1
Navelgas · 2.0 kmC&R trout
C&R trout stretch — Puente de La Carrizal to 50 m aguas arriba del banzao del caserío de Vichavera.
Beat detail
Daily permit required, all fish returned
Upstream: Puente de La Carrizal
Downstream: 50 m aguas arriba del banzao del caserío de Vichavera
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
- Se requiere licencia de pesca asturiana
- En 2026 muchas aguas trucheras llegan hasta el 15 de agosto, pero las zonas de salmón, las zonas de montaña, los tramos sin muerte y los tramos fronterizos pueden variar
- Consulta las normas del coto y del tramo local antes de pescar.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 1
Water here around 21°C — probably warm enough to stress Brown Trout . These are likely cooler.
Gallery · 1
Terrain map
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · ES018MSPFES197MAR001750
The full read · show the working · for Brown Trout · confidence 80%
How the 0 is built — score × weight = contribution
Temperature5 × 28%1.4
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity63 × 12%7.6
Limiting factor: Water temperature (21.1°C) is outside Brown Trout's preferred range (10–16°C)= 55
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
Directions
Related guides
Booking & contacts