Short mountain tributary of the Eo near Vegadeo, draining slate country on the Asturias–Galicia border. Good wild trout habitat in the upper reaches.
- Slate
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 21.2°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise poor — barometric pressure is in the right range.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
Records-basedModerate confidence
Based on species-occurrence records, not local invertebrate surveys.
Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Yellow SallyHatch
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.
- Las normas en aguas fronterizas pueden variar según la orilla y la jurisdicción
- Consulta la normativa local exacta antes de pescar, en lugar de asumir una simple división Asturias-Galicia.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 2
Water here around 21°C — probably warm enough to stress brown trout. These are likely cooler.
Gallery · 1
Terrain map
About this water
The full read · show the working · for brown trout · confidence 80%
How the 20 is built — score × weight = contribution
Temperature12 × 28%3.4
Flow15 × 22%3.3
Clarity40 × 18%7.2
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity50 × 12%6.0
Limiting factor: Water temperature (21.2°C) is outside Brown Trout's preferred range (10–16°C)= 34
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
A drop and clear would lift the flow and clarity scores.
The dawn and dusk windows score higher than the midday lull.
Directions
Related guides
Booking & contacts
Río Suarón
Google Places
Short mountain tributary of the Eo near Vegadeo, draining slate country on the Asturias–Galicia border.
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 21.2°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise poor — barometric pressure is in the right range.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
Records-basedModerate confidence
Based on species-occurrence records, not local invertebrate surveys.
Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Yellow SallyHatch
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.
- Las normas en aguas fronterizas pueden variar según la orilla y la jurisdicción
- Consulta la normativa local exacta antes de pescar, en lugar de asumir una simple división Asturias-Galicia.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 2
Water here around 21°C — probably warm enough to stress brown trout. These are likely cooler.
Gallery · 1
Terrain map
About this water
Short mountain tributary of the Eo near Vegadeo, draining slate country on the Asturias–Galicia border. Good wild trout habitat in the upper reaches.
- Slate
The full read · show the working · for brown trout · confidence 80%
How the 20 is built — score × weight = contribution
Temperature12 × 28%3.4
Flow15 × 22%3.3
Clarity40 × 18%7.2
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity50 × 12%6.0
Limiting factor: Water temperature (21.2°C) is outside Brown Trout's preferred range (10–16°C)= 34
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
A drop and clear would lift the flow and clarity scores.
The dawn and dusk windows score higher than the midday lull.
Directions
Related guides
Booking & contacts