Spate · Slate · Asturias, Spain

Río Porcía

Río Porcía venue image
Google Places

The Porcía is a responsive slate-country stream flowing 22 km through pastoral valleys.

Species

Decent — worth a look

River high but settled. Stay with the seams and the slacker tail-outs.

75% confidence in this read
Water temperature for sea trout
Cool — slow
6°C est.ideal 8–15°C
0°14°28°
Why this score · for sea trout
  • Temperature4628% weight
  • Flow8022% weight
  • Clarity8518% weight
  • Feeding Time4013% weight
  • Pressure857% weight
  • Prey Activity2512% weight
Conditions
Level
1.63 m
Water temp
6.0°C
Estimated
Clarity
Clear
Air temp
7°C
Wind
S 13 km/h
Gentle breeze
Pressure
1018 hPa
Rain · 48h
1.9 mm
No meaningful rain
Rain · ahead
1.1 mm
No meaningful rain · next 48h

Live readings — water temperature is an estimate where the gauge does not record it.

How to fish it · for sea trout
When
From dusk into the first half of the night.
Where
Deeper pools and slower glides · hold water and current seams.
Method
Fish dark patterns on a sink-tip or lightly sunk line, especially near structure.
Kit
10 ft #6/7 rod, floating line with a sink-tip option, 8–10 lb fluoro tippet for the swing.
Why this works
Good conditions. Clarity is favourable (85), Prey activity is weakest (25). ⏰ Sea trout become most active from an hour before dusk. This stretch closes at 22:15 — your legal window captures the start of the best fishing. Fish the last 90 minutes hard. Overcast evenings extend the effective window.
Through the year
0–3 scale · May 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.

Gallery · 1
  1. Terrain map of the venue
    Terrain map
Beats · 1
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.
Directions
Apple MapsGoogle Maps
About this water

The Porcía is a responsive slate-country stream flowing 22 km through pastoral valleys. Dark, polished pools and fast runs hold wild browns (14–26 cm, with larger residents in deep pools). The 3-hour spate response makes it perfect for visiting anglers. Mayfly and sedge hatches May–June; terrestrials work in summer. Straightforward roadside access and usually uncrowded, but Asturian licence and local tramo rules still apply. A river where responsive water rewards patient, careful presentation.

Under the surface

The Porcía runs from western Asturian slate country down toward the coast at Llanes province. The upper reaches are step-pool slate pocket water, steep and spate-responsive. The descent is rapid and the water amber-colored from its slate origins throughout. The middle Porcía opens slightly into partly-confined pool-riffle on cobble emerging from slate. The pools have been fished for generations; they're marked and known by local tradition. The river maintains its spate character — quick to rise, quick to fall, responsive to weather — throughout its course. The wading demands attention in the upper sections; the middle reaches become more approachable.

Wading: Slick wet slate ledges

  • Slate
  • Partly confined
  • Step pool
  • Plane bed
Other water nearby · 5
Booking & contacts