Spate · Slate · Asturias, Spain

Río Navelgas

Río Navelgas venue image
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The Navelgas is an upland slate-moorland stream — intimate fishing in vast, open landscape.

Species

A side-water session, not the main event

River high but settled. Tributary pocket water is the better play today.

75% confidence in this read
Water temperature for brown trout
Cool — slow
6°C est.ideal 10–16°C
0°14°28°
Why this score · for brown trout
  • Temperature3528% weight
  • Flow8022% weight
  • Clarity9518% weight
  • Feeding Time4013% weight
  • Pressure807% weight
  • Prey Activity2512% weight
Conditions
Level
1.57 m
Water temp
6.0°C
Estimated
Clarity
Clear
Air temp
7°C
Wind
SW 6 km/h
Calm
Pressure
1018 hPa
Rain · 48h
2.2 mm
Light rain
Rain · ahead
1.6 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 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 conditions. Clarity is favourable (95), Prey activity is weakest (25).
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
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About this water

The Navelgas is an upland slate-moorland stream — intimate fishing in vast, open landscape. Dark pools and clear runs hold wild browns (12–22 cm) eager for careful presentation. The 3-hour spate response ensures quick fishing windows. Mayfly and sedge hatches productive; terrestrials work in summer. Minimal development, genuine solitude, and straightforward access. A river where slowness and observation reward patience.

Under the surface

The Navelgas is a smaller tributary arriving into the Narcea system from the north. The upper reaches are step-pool slate country, steep and responsive. The descent is rapid and the water amber-toned throughout its course. The Navelgas maintains its spate character — quick response, slate signature, responsive to Cantabrian rainfall — throughout its reach. The available pools are secondary to the river's responsive descent character. The wading demands respect throughout.

Wading: Wet slate slabs with algal film

  • Slate
  • Confined
  • Step pool
  • Cascade
Other water nearby · 5
Booking & contacts