Mayflies
- Ecology: Good
- Chemical: Unknown
WFD classification · ES018MSPFES170MAR001320
Rules at a glance
- Public water
- Licence required
Water temperature for Brown Trout
Cool — slow5°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
Fair — water clarity is working for you, but insect activity is the limiting factor today.
Likely species
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 3 active hatches hour by hour as a supporter.
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
1
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
Fly box · Brown Trout
Top
22-24 · Pattern
Upstream dry, on top
Beats · 1
Teverga · 2.8 kmTrout permit
Trout permit stretch — Puente de San Martín del río Páramo to Puente de abajo, situado en la proximidad del primer túnel de la Ctra AS-228.
Beat detail
Daily permit required, keep within bag limits
Upstream: Puente de San Martín del río Páramo
Downstream: Puente de abajo, situado en la proximidad del primer túnel de la Ctra AS-228
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
- Asturian fishing licence required
- In 2026 many trout waters run to 15 August, but salmon zones, mountain zones, tramos sin muerte, and border stretches can differ
- Check local coto and tramo rules before fishing.
What's coming
Plan ahead
5-day outlook
Fishing better nearby · 5
Gallery · 2
Trubia River as it passes through Trubia (La Fábrica) Terrain map
Water quality (WFD)
The full read · show the working · for Brown Trout · confidence 50%
How the 42 is built — score × weight = contribution
Temperature21 × 28%5.9
Flow48 × 22%10.6
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity13 × 12%1.6
Limiting factor: Water temperature (4.8°C) is outside Brown Trout's preferred range (10–16°C)= 51
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Warmer water — toward the 10–16 °C ideal band — would lift the temperature score.
Directions
Seasons & zones
- Trout Dritter Sunday im May → 15 August
The Trubia joins the Nalón above Puente Peñaflor (Grado) — the Nalón's salmon-zone limit — so it sits in the mountain-zone tributary network rather than the general lowland default. Mountain-zone trout (zona de alta montaña): opens Third Sunday of May, not the general 15 March, minimum size 17cm (vs. 19cm general). Asturian regulation classifies any tributary joining above a salmon river's designated zone-limit point as alta montaña water. Inferred here from confluence position, not a verified lookup against the official cotos map (pescafluvial.asturias.es) — confirm before treating as final.
Sea trout: Variable seasonal (2026)
Related guides
Booking & contacts
Permits & access
- Pesca Fluvial Asturias — Permisos & Sorteo de CotosPermit information and the annual coto lottery (sorteo anual) for salmon, trout and reo. Run by the Principado de Asturias, not the Federación — the previous entry credited the Federación Asturiana de Pesca and pointed at fedpesca.com, which no longer resolves. The Federación does still exist, at asturianadepesca.com, but it is not the permit-allocation authority.
- Sede Asturias — Permisos de PescaAsturian fishing licence and salmon coto permits (sorteo lottery system)
Clubs & associations
Río Trubia
Water temperature for Brown Trout
Cool — slow5°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
Fair — water clarity is working for you, but insect activity is the limiting factor today.
Likely species
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 3 active hatches hour by hour as a supporter.
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
1
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
Fly box · Brown Trout
Top
22-24 · Pattern
Upstream dry, on top
Beats · 1
Teverga · 2.8 kmTrout permit
Trout permit stretch — Puente de San Martín del río Páramo to Puente de abajo, situado en la proximidad del primer túnel de la Ctra AS-228.
Beat detail
Daily permit required, keep within bag limits
Upstream: Puente de San Martín del río Páramo
Downstream: Puente de abajo, situado en la proximidad del primer túnel de la Ctra AS-228
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
- Asturian fishing licence required
- In 2026 many trout waters run to 15 August, but salmon zones, mountain zones, tramos sin muerte, and border stretches can differ
- Check local coto and tramo rules before fishing.
What's coming
Plan ahead
5-day outlook
Fishing better nearby · 5
Gallery · 2
Trubia River as it passes through Trubia (La Fábrica) Terrain map
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · ES018MSPFES170MAR001320
The full read · show the working · for Brown Trout · confidence 50%
How the 42 is built — score × weight = contribution
Temperature21 × 28%5.9
Flow48 × 22%10.6
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity13 × 12%1.6
Limiting factor: Water temperature (4.8°C) is outside Brown Trout's preferred range (10–16°C)= 51
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Warmer water — toward the 10–16 °C ideal band — would lift the temperature score.
Directions
Seasons & zones
- Trout Dritter Sunday im May → 15 August
The Trubia joins the Nalón above Puente Peñaflor (Grado) — the Nalón's salmon-zone limit — so it sits in the mountain-zone tributary network rather than the general lowland default. Mountain-zone trout (zona de alta montaña): opens Third Sunday of May, not the general 15 March, minimum size 17cm (vs. 19cm general). Asturian regulation classifies any tributary joining above a salmon river's designated zone-limit point as alta montaña water. Inferred here from confluence position, not a verified lookup against the official cotos map (pescafluvial.asturias.es) — confirm before treating as final.
Sea trout: Variable seasonal (2026)
Related guides
Booking & contacts
Permits & access
- Pesca Fluvial Asturias — Permisos & Sorteo de CotosPermit information and the annual coto lottery (sorteo anual) for salmon, trout and reo. Run by the Principado de Asturias, not the Federación — the previous entry credited the Federación Asturiana de Pesca and pointed at fedpesca.com, which no longer resolves. The Federación does still exist, at asturianadepesca.com, but it is not the permit-allocation authority.
- Sede Asturias — Permisos de PescaAsturian fishing licence and salmon coto permits (sorteo lottery system)
Clubs & associations