Spate · Limestone · Asturias, Spain

Río Casaño

A short, steep Cares tributary draining the eastern flank of the Picos de Europa and joining the parent river at Las Arenas de Cabrales.

Species

A proper day on the water

River steady at a fishable height. A proper day for it.

75% confidence in this read
Water temperature for brown trout
Ideal
11°C est.ideal 10–16°C
0°14°28°
Why this score · for brown trout
  • Temperature10028% weight
  • Flow4022% weight
  • Clarity9518% weight
  • Feeding Time5013% weight
  • Pressure807% weight
  • Insect activity3912% weight
Conditions
Level
0.58 m
Water temp
10.9°C
Estimated
Clarity
Clear
Air temp
15°C
Wind
NE 6 km/h
Calm
Pressure
1016 hPa
Rain · 48h
0.2 mm
No meaningful rain
Rain · ahead
10.5 mm
Moderate 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 — water temperature is working for you, but insect activity is the limiting factor today.
Through the year
0–3 scale · June 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.

Permits & access
Permit required — see local rules.
  • Asturian licencia de pesca required
  • Cabrales is part of the Picos de Europa national park — check special protection rules and any coto allocation before fishing.
Directions
Apple MapsGoogle Maps
About this water

A short, steep Cares tributary draining the eastern flank of the Picos de Europa and joining the parent river at Las Arenas de Cabrales. The Casaño is alpine in every sense — gin-clear limestone water, plunge pools and pocket water, the smell of wet rock and beech in the high meadows above Asiego. Wild brown trout only, often small but in remarkable numbers in the upper river. Spates short and sharp: three-hour response. Best fished from late May once the snowmelt has dropped back, through to mid-July when low summer water tightens the fishing right down. A river to walk hard on, fishing single careful casts to spotted fish.

  • Limestone
Other water nearby · 5