Spate · Mixed · Asturias, Spain

Río Riosa

Riosa venue image
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Small enough that you can step across it in places, which shouldn't encourage false confidence.

Species

A side-water session, not the main event

River steady at a fishable height. A patient day. Fish the cover and stay with it.

75% confidence in this read
Water temperature for brown trout
Cool — slow
7°C est.ideal 10–16°C
0°14°28°
Why this score · for brown trout
  • Temperature4228% weight
  • Flow8022% weight
  • Clarity9518% weight
  • Feeding Time4513% weight
  • Pressure807% weight
  • Prey Activity2712% weight
Conditions
Level
0.74 m
Water temp
6.5°C
Estimated
Clarity
Clear
Air temp
8°C
Wind
S 5 km/h
Calm
Pressure
1018 hPa
Rain · 48h
2.7 mm
Light rain
Rain · ahead
6.7 mm
Light 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
Good conditions. Clarity is favourable (95), Prey activity is weakest (27).
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.
Directions
Apple MapsGoogle Maps
About this water

Small enough that you can step across it in places, which shouldn't encourage false confidence. The Riosa holds wild browns in runs no wider than a doorway, under alders that make the casting interesting. The fish are modest in size and precise in their requirements, and they will let you know immediately if you've been sloppy.

Under the surface

The Riosa arrives into the Nalón system bringing steep Cantabrian descent and mixed lithology character. The upper reaches are step-pool slate and quartzite; the descent is steep and response to rainfall pronounced. The middle Riosa allows pool-riffle sequences to develop on cobble; these pools are known and respected. The river maintains its responsive character — quick to rise, quick to fall, connected fully to mountain weather — throughout.

Wading: Wet boulder tops and lichen glazed bedrock steps

  • Mixed
  • Confined
  • Step pool
  • Pocket water
Other water nearby · 5
Booking & contacts