Spate · Mixed · Asturias, Spain

Río Nalón

Río Nalón fishing venue photo
Poor · Atlantic Salmon
Cascade · 10-14 / small double
Closed season
Out of season. File this water for the right month.
Closed — confidence not applicable today.
What moved it
  • Level0.96 mDropping after lift
  • Water temp22.0°C
  • ClarityVery colouredClearing
Today's fly
Cascade
Cascade10-14 / small double
Asturias regional default — used when the river-specific evidence is thin.
Conditions on the water
Live gauge
Level
Steady
0.96 m
Dropping after lift
Water temp22.0°C
ClarityVery coloured
Weather27°C
WindN 8 km/h
Pressure1021 hPa
Rain · recent0.0 mm
Rain · ahead4.1 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Atlantic Salmon
Warm — slow
22°C est.ideal 10–14°C
0°14°28°
How to fish it · for Atlantic Salmon
When
May into June after a spate. The Nalón takes ten hours to peak from rain and longer to clear; check the forecast before you travel. Fish run through fast — the dropping stage is your one shot.
Where
Middle and upper-middle beats — Lena, Aller, Las Mazas. Salmon fishing reaches only to Puente de Peñaflor; below that is sea trout and trout water. Mixed sandstone-and-shale pools alternate with rocky rapids.
Method
Tube fly swung across the heads as the river drops — 1.5 inch in heavy colour, scaling down as it clears. Modern catches sit below Sella and Narcea — fish it on its own merits. Single barbless from 16 June; cupo one per day, one per season.
Kit
13 ft #8 double-hander; 10 ft #8 single in low water. Sink-tip and intermediate lines, floater for the clear-up. 12 to 15 lb fluoro.
Why this works
Water at 22°C. This is the line where catch-and-release kills atlantic salmon. Do not fish for them today.
Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

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Evidence
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Salmon run timing
2025 season

97 salmon declared to 15 July · 74.6% of regional total · trend: very_strong

Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
1
Trout seasonSeason
1
2
2
2
2
1
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
Atlantic Salmon fly box
Beats · 6
Agüera · 1.7 kmFree Tue/Wed/Sat
Free Tue/Wed/Sat stretch — Final de la Isla de 'Cuero' to Campo del Rey (Agüera).
Beat detail
Free on Tue/Wed/Sat, sorteo on other days
Upstream: Final de la Isla de 'Cuero'
Downstream: Campo del Rey (Agüera)
Agüera beat map
Sandiche · 2.1 kmFree Tue/Wed/Sat
Free Tue/Wed/Sat stretch — Campo del Rey (Agüera) to Reguero de Grullos en AS-237 km5.
Beat detail
Free on Tue/Wed/Sat, sorteo on other days
Upstream: Campo del Rey (Agüera)
Downstream: Reguero de Grullos en AS-237 km5
Sandiche beat map
Candamín · 4.3 kmFree Tue/Wed/Sat
Free Tue/Wed/Sat stretch — Reguero de Grullos en AS-237 km5 to Puente de FEVE en San Román.
Beat detail
Free on Tue/Wed/Sat, sorteo on other days
Upstream: Reguero de Grullos en AS-237 km5
Downstream: Puente de FEVE en San Román
Candamín beat map
San Román · 1.4 kmFree Tue/Wed/Sat
Free Tue/Wed/Sat stretch — Puente de FEVE en San Román to Puente de Ferreras.
Beat detail
Free on Tue/Wed/Sat, sorteo on other days
Upstream: Puente de FEVE en San Román
Downstream: Puente de Ferreras
San Román beat map
Santoseso · 3.0 kmFree Tue/Wed/Sat
Free Tue/Wed/Sat stretch — Zona intermedia entre las islas de 'El Palacio' y 'La Vía' to Pasarela Pronga / Beifar.
Beat detail
Free on Tue/Wed/Sat, sorteo on other days
Upstream: Zona intermedia entre las islas de 'El Palacio' y 'La Vía'
Downstream: Pasarela Pronga / Beifar
Santoseso beat map
Pronga · 1.2 kmSorteo
Sorteo stretch — Pasarela Pronga / Beifar to Confluencia con el Narcea.
Beat detail
Sorteo (lottery) permit required
Upstream: Pasarela Pronga / Beifar
Downstream: Confluencia con el Narcea
Pronga beat map
Beat map
Illustration · Studio Daisy
Beat map — illustrated schematic
Schematic guide to the main salmon cotos, pools and access sections. Verify against current coto details before fishing.
Permits & access
Day permit · price varies by zone
Sorteo
Allocated by annual lottery — visiting anglers should target free-day cotos (Tue/Wed/Sat) or club permits.
  • Sorteo (lottery) beat allocation via Federación Asturiana de Pesca
  • Licencia de pesca + permiso de coto required
  • For 2026, salmon cupo is 1 fish per day and 1 per season, of which only 1 may be killed
  • Check river-specific coto rules, vedados, and tackle restrictions before fishing.
What's coming
Plan ahead
5-day outlook
Water here around 22°C. Nothing cooler within range — carry a thermometer.
Gallery · 9
  1. Nalon
    Nalon
  2. Nalon
    Nalon
  3. Nalon
    Nalon
  4. The Nalón flowing through a green valley at Puerma, Asturias.
    Río Nalón at Puerma
  5. The Nalón flowing through riparian forest on the Camino de San Salvador, Asturias.
    Río Nalón on the Camino de San Salvador
  6. The Nalón valley at Peñaflor, Grado, the river running through wooded Asturian landscape.
    Río Nalón at Peñaflor, Grado
  7. The Nalón flowing through a broad landscape at Aces de Candamo, Asturias.
    Río Nalón at Aces de Candamo
  8. The Nalón flowing between Olloniego and Soto de Ribera, Asturias.
    Río Nalón between Olloniego and Soto de Ribera
  9. Terrain map of the venue
    Terrain map
Water quality (WFD)
  • Ecology: Good
  • Chemical: Unknown

WFD classification · ES018MSPFES171MAR001380

The full read · show the working · for Atlantic Salmon · confidence 90%
How the river scores — hydrology factors
Water heightMedium Ideal0.0
Recent riseNone0.0
Falling after liftNot Applicable0.0
Water temperatureCool To Moderate0.0
Time in seasonOpening Period0.0
ClarityClearing0.0
Hydrology base0.0
Legal gate: Unknown Check Local Rules
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Salmon Third Saturday of April → 15 July

    2026 season: opens 18 April. Bag limit reduced to 1 fish per angler per year (was 2 per season). 60 minutes less daily fishing time. Cupo: 1 salmon per day, 1 per season (kill limit). Check river-specific coto rules, vedados, and tackle restrictions before fishing. Nalón-Narcea basin quota for 2026: 60 salmon total (max 25 in zona libre) — this basin has reached its 2026 quota, so salmon fishing here is catch-and-release only for the rest of the season.

  • Trout Third Sunday of March → 15 August
4 zones — different rules apply
  • Coto salmonero

    Nalón salmon cotos: Pronga to Peñaullán. Salmon fishing only to Puente de Peñaflor. (Pronga, La Cerezalina, Peña La Cerra, Peñaullán)

    • Salmon: Third Saturday of April → 15 July · 1 per day, 2 per year (only 1 killable)
    • Sea trout: follows Trout
    • Trout: Third Sunday of May → 15 August
  • Coto parcial

    Mixed-access salmon cotos (Agüera, Sandiche, Candamín, San Román, Santoseso, Roxicu)

    • Salmon: Third Saturday of April → 15 July
    • Sea trout: follows Trout
    • Trout: Third Sunday of May → 15 August
  • Zona libre

    Lower Nalón below Peñaflor — free access, trout/coarse. No salmon fishing.

    • Sea trout: follows Trout
    • Trout: Third Sunday of March → 15 August
  • Zona libre sin muerte

    No-kill stretch: La Figal (347m, closed from 16 June)

    • Sea trout: follows Trout
    • Trout: Third Sunday of March → 15 June

Sea trout: Variable seasonal (2026) — Nalón system — large Asturian river with a reo tradition, though the main river sees industrial-era impacts in lower sections. Sea trout are more accessible in the upper tributaries (Trubia, Aller). Condition-dependent; regulated night fishing windows.

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