- Ecology: Good
- Chemical: Unknown
WFD classification · ES018MSPFES193MAR001700
Rules at a glance
- Public water
- Licence required
Water temperature for Brown Trout
Warm — slow18°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 21.2°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 12pm
12pm(now) — Heather Fly
Stage: Terrestrials on topApproach: Dry flyActivity: 95%
Also:Reed Smut51%Cinnamon Sedge32%
Peak emergence windowWeather boost9 food groups active
Peak activity at 12pm — Heather Fly (Heather Fly, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 3 guilds 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
Beats · 2
Belmonte · 1.8 kmC&R trout
C&R trout stretch — Puente en zona urbana de Belmonte to Puente carretera a Corias.
Beat detail
Daily permit required, all fish returned
Upstream: Puente en zona urbana de Belmonte
Downstream: Puente carretera a Corias
Selviella · 1.3 kmC&R trout
C&R trout stretch — 50 m aguas abajo de la presa de Selviella to Puente de las Lleras. Central Hidroeléctrica de la Miranda.
Beat detail
Daily permit required, all fish returned
Upstream: 50 m aguas abajo de la presa de Selviella
Downstream: Puente de las Lleras. Central Hidroeléctrica de la Miranda
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
- Se requiere licencia de pesca asturiana
- En 2026 muchas aguas de trucha llegan hasta el 15 de agosto, pero las zonas de salmón, zonas de montaña, tramos sin muerte y tramos fronterizos pueden diferir
- Comprueba las normas locales de coto y tramo 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
Temperature4 × 28%1.1
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time85 × 13%11.1
Pressure80 × 7%5.6
Insect activity65 × 12%7.8
Limiting factor: Water temperature (21.2°C) is outside Brown Trout's preferred range (10–16°C)= 60
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
Seasons & zones
Sea trout: Variable seasonal (2026)
Related guides
Booking & contacts
Permits & access
Clubs & associations
Río Pigüeña
Water temperature for Brown Trout
Warm — slow18°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 21.2°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 12pm
12pm(now) — Heather Fly
Stage: Terrestrials on topApproach: Dry flyActivity: 95%
Also:Reed Smut51%Cinnamon Sedge32%
Peak emergence windowWeather boost9 food groups active
Peak activity at 12pm — Heather Fly (Heather Fly, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 3 guilds 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
Beats · 2
Belmonte · 1.8 kmC&R trout
C&R trout stretch — Puente en zona urbana de Belmonte to Puente carretera a Corias.
Beat detail
Daily permit required, all fish returned
Upstream: Puente en zona urbana de Belmonte
Downstream: Puente carretera a Corias
Selviella · 1.3 kmC&R trout
C&R trout stretch — 50 m aguas abajo de la presa de Selviella to Puente de las Lleras. Central Hidroeléctrica de la Miranda.
Beat detail
Daily permit required, all fish returned
Upstream: 50 m aguas abajo de la presa de Selviella
Downstream: Puente de las Lleras. Central Hidroeléctrica de la Miranda
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
- Se requiere licencia de pesca asturiana
- En 2026 muchas aguas de trucha llegan hasta el 15 de agosto, pero las zonas de salmón, zonas de montaña, tramos sin muerte y tramos fronterizos pueden diferir
- Comprueba las normas locales de coto y tramo 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 · ES018MSPFES193MAR001700
The full read · show the working · for Brown Trout · confidence 80%
How the 0 is built — score × weight = contribution
Temperature4 × 28%1.1
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time85 × 13%11.1
Pressure80 × 7%5.6
Insect activity65 × 12%7.8
Limiting factor: Water temperature (21.2°C) is outside Brown Trout's preferred range (10–16°C)= 60
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
Seasons & zones
Sea trout: Variable seasonal (2026)
Related guides
Booking & contacts
Permits & access
Clubs & associations