Spate · Limestone · Asturias, Spain

Río Bedón

Río Bedón fishing venue photo

The Bedón is a diminutive limestone stream — just 12 km of crystal-clear mountain water holding small but eager wild browns (10–20 cm).

Marginal · Brown Trout
Ignita CDC · 16-20
Marginallive now
Slow going — pick your moments
River temperature is the limiting factor today, not the flow. Fish dawn or dusk if you go at all, and handle everything with extra care.
80% confidence
What moved it
  • Level0.27 mLast reading 10h ago
  • Water temp19.3°C
  • ClarityClear
Today's fly
IC
Ignita CDC16-20
Upstream dry, on top
Conditions on the water
Live gauge
Level
Steady
0.27 m
lowspate
Water temp19.3°C
ClarityClear
Weather23°C
WindN 12 km/h
Pressure1019 hPa
Rain · recent0.0 mm
Rain · ahead3.9 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Warm — slow
19°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
Water at 19.3°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Hatch timeline · todayPeak at 6pm

Hatch predictions

Today's headline hatch shown — see all 7 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

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Evidence
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · August 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 · 2
Rales · 2.4 kmC&R trout
C&R trout stretch — Puente de Rales to Puente de San Martín.
Beat detail
Daily permit required, all fish returned
Upstream: Puente de Rales
Downstream: Puente de San Martín
Rales beat map
San Antolín · 1.8 kmTrout permit
Trout permit stretch — Puente de San Martín to Puente viejo de San Antolín.
Beat detail
Daily permit required, keep within bag limits
Upstream: Puente de San Martín
Downstream: Puente viejo de San Antolín
San Antolín 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
Cooler water nearby · 3
Water here around 19°C — probably warm enough to stress Brown Trout . These are likely cooler.
Gallery · 2
  1. Plage de San Antolín à l'embouchure du rio Bedón
    Plage de San Antolín à l'embouchure du rio Bedón
  2. Terrain map of the venue
    Terrain map
About this water

The Bedón is a diminutive limestone stream — just 12 km of crystal-clear mountain water holding small but eager wild browns (10–20 cm). Ultra-responsive (2 hours to spate), with pools and runs where a 3-weight feels powerful. Mayfly hatches May–June are exceptional; terrestrials work in summer. Accessible from coastal Llanes, uncrowded. A river that teaches streamcraft and observation in a package you can fish in an afternoon.

Under the surface

The Bedión is a slate-fed tributary arriving into the Dobra network. The river is smaller, steep, and spate-responsive throughout its course. The upper reaches show pure slate character in step-pool confines; the descent is rapid and the water amber-toned throughout. The Bedión's technical simplicity is its defining feature — step-pool or briefly interrupted riffle, responding immediately to Cantabrian rainfall. The pools available are secondary to the river's main character, which is responsive descent. The wading demands care throughout; the insecure slate slabs and the rapid current require commitment.

Wading: Wet limestone slabs in upper pocket water

Hatches & food

In the mountain-to-sea trout rivers of Asturias, olives and other mayflies do much of the work in spring whenever levels and colour allow, followed by strong evening caddis and steady buzzer life through early and mid-summer, with terrestrials and mixed surface food from wooded, pastoral banks rounding out the diet whenever flows drop back into safe wading range.

  • Limestone
  • Partly confined
  • Step pool
  • Pool riffle
Water quality (WFD)
  • EcologyGood
  • ChemicalUnknown

WFD classification · ES018MSPFES133MAR000640

The full read · show the working · for Brown Trout · confidence 80%
How the 32 is built — score × weight = contribution
Temperature35 × 28%9.8
Flow40 × 22%8.8
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity50 × 12%6.0
Conditions total= 55
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones

Sea trout: Variable seasonal (2026)

Related guides
Booking & contacts