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.

Good · Brown Trout
Ignita CDC · 16-20
Goodlive now
A proper day on the water
River high but settled. Match the colour and fish the seams.
90% confidence
What moved it
  • Level1.37 mLast reading 20h ago
  • Water temp17.1°C
  • ClarityClear
Today’s fly
IC
Ignita CDC16-20
Upstream dry, on top
Conditions on the water
Live gauge
Level
Steady
1.37 m
Last reading 20h ago
Water temp17.1°C
ClarityClear
Weather19°C
WindNE 8 km/h
Pressure1026 hPa
Rain · recent0.0 mm
Rain · ahead0.5 mm

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

Water temperature for brown trout
Warm — slow
17°C est.ideal 1016°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
Good — water clarity is right today, though insect activity could be better.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 9 active hatches hour by hour with Pro.

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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
Beats · 1
Navelgas · 2.0 kmC&R trout
C&R trout stretch — Puente de La Carrizal to 50 m aguas arriba del banzao del caserío de Vichavera.
Beat detail
Daily permit required, all fish returned
Upstream: Puente de La Carrizal
Downstream: 50 m aguas arriba del banzao del caserío de Vichavera
Navelgas beat map
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
Other water nearby · 5
Gallery · 1
  1. Terrain map of the venue
    Terrain map
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
Water quality (WFD)
  • EcologyGood
  • ChemicalUnknown

WFD classification · ES018MSPFES197MAR001750

The full read · show the working · for brown trout · confidence 90%
How the 76 is built — score × weight = contribution
Temperature74 × 28%20.7
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity51 × 12%6.1
Conditions total= 76
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
Related guides
Booking & contacts