Spate · Limestone · Asturias, Spain

Río Purón

Río Purón fishing venue photo
Editorial photo

As it comes to the sea, full of mullet

Damian Rafferty

Small eastern coastal river near Llanes.

Fair · Sea Trout
Black & Silver Tube · 1-2 inch
Fairlive now
Decent — worth a look
River dropping into shape after a lift. Cover the heads and tails before the river drops away.
75% confidence
What moved it
  • LevelProxyvia Río Bedón
  • Water temp15.5°C
  • ClarityColouredColouring up
Today’s fly
BS
Black & Silver Tube1-2 inch
In deep pools and dark water, silhouette and contrast do the work colour cannot. A fly that reads as black against depth is enough. Fish it broadside, hold the swing, let it hang at the dangle — that is when the best fish take.
Conditions on the water
Proxy gauge
Level
Steady
Proxy
via Río Bedón
Water temp15.5°C
ClarityColoured
Weather18°C
WindE 14 km/h
Pressure1024 hPa
Rain · recent1.4 mm
Rain · ahead1.9 mm

No gauge on this water — conditions are inferred from Río Bedón. The trend transfers, the absolute level does not.

Water temperature for sea trout
Warm — slow
16°C est.ideal 8–15°C
0°14°28°
How to fish it · for sea trout
When
From dusk into the first half of the night.
Where
Deeper pools and slower glides · hold water and current seams.
Method
Fish dark patterns on a sink-tip or lightly sunk line, especially near structure.
Kit
10 ft #6/7 rod, floating line with a sink-tip option, 8–10 lb fluoro tippet for the swing.
Why this works
Good — barometric pressure is working for you, but insect activity is the limiting factor today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 3 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
Sea Trout fly box
BS
Black & Silver TubeTop
1-2 inch · Tube
In deep pools and dark water, silhouette and contrast do the work colour cannot. A fly that reads as black against depth is enough. Fish it broadside, hold the swing, let it hang at the dangle — that is when the best fish take.
SF
Snake Fly (Black)
2-4 inch · Streamer
A mobile eel-like profile that undulates through deep pools — effective when sea trout are lying deep and not responding to conventional wets.
Beats · 1
Purón · 1.2 kmTrout permit
Trout permit stretch — Puente de ferrocarril to 25 m aguas abajo de la última caseta de pescadores, en línea de playa.
Beat detail
Daily permit required, keep within bag limits
Upstream: Puente de ferrocarril
Downstream: 25 m aguas abajo de la última caseta de pescadores, en línea de playa
Purón beat map
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
  • Asturian fishing licence required
  • Sea trout regulations apply — check current rules.
What's coming
Plan ahead
5-day outlook
Fishing better nearby · 5
Río Cares
18 km
69
Brown trout · Salmon · Sea trout
Río Casaño
14 km
Brown trout
Río Bedón
17 km
Brown trout · Sea trout
Río Deva
22 km
Brown trout · Salmon · Sea trout
Bullón
28 km
Brown trout
Gallery · 2
  1. As it comes to the sea, full of mullet
    As it comes to the sea, full of mullet
  2. Terrain map of the venue
    Terrain map
About this water

Small eastern coastal river near Llanes. Very short course. Resident trout and a fragile sea trout run. Loads of mullet in the estuary.

Under the surface

The Purón is a short limestone stream descending to the coast near Llanes — barely 10 km, but the geology punches above its size. Limestone cobble and bedrock give the river exceptional clarity; even after a summer spate it clears faster than the surrounding slate-fed drainages. The step-pool sequence and confined valley keep gradients steep. Spate events hit hard and recede quickly — the limestone base drains fast rather than sustaining a prolonged rise. On the drop, the pools focus fish. Wading demands respect: polished wet limestone at step lips can be treacherous underfoot.

Wading: Polished wet limestone slabs at step lips

  • Limestone
  • Confined
  • Bedrock
  • Step pool
Why this score · for sea trout
  • Temperature8128% weight
  • Flow4022% weight
  • Clarity7018% weight
  • Feeding Time8013% weight
  • Pressure857% weight
  • Insect activity2712% weight
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
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