Stillwater · Limestone · Asturias / Morcín–Riosa, ES

Embalse de los Alfilorios

Embalse de los Alfilorios terrain map
Fair · Trout
Griffith's Gnat · 18-22
A respectable few hours, if you choose your moments
Good wave on — drift country. A useful wave. Work the productive shore.
45% confidence
limited data

Peak season here starts around September — worth planning ahead.

What moved it
  • WindN 14 km/hGentle breeze
Today's fly
Griffith's Gnat
Griffith's Gnat18-22
Upstream dry, on top
Conditions on the water
Live gauge
Wind
Gentle breeze
N 14 km/h
N
N
from the north
Wave20 cm ripple
Water temp
Air temp22°C
CloudOvercast
Pressure1017 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

Reservoir levelas of 10 Aug
74% 10-yr norm
Steady
50% full
Low & steady
-24 ptsvs seasonal norm
-12 ptsvs last year
0 ptsthis week
Below seasonal norm but level steady — fish should be settled to the new shoreline.
How to fish it · for Trout
When
March to August (coto open season). Quiet weekday permits are easiest to come by.
Where
Start with Griffith's Gnat (18-22) on a As per local method. If that does not produce, switch depth or speed before changing the pattern entirely.
The plan
Plan A

Start with Griffith's Gnat (18-22) on a As per local method. If that does not produce, switch depth or speed before changing the pattern entirely.

Plan B

Fish early and late, try deeper during the heat of the day with a fast-sinking line.

Watch for

Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.

Either bank or boat

Good ripple suits both bank and boat. Bank: work inflows, dam walls, and points. Boat: broadside drift covering wind lanes.

Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 5 with Pro.

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Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Green PeterHatch
2
3
2
Murrough (Great Red Sedge)Hatch
2
3
2
Mayfly (Green Drake)Hatch
2
2
Daddy Long LegsHatch
2
3
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Trout fly box
Permits & access
Permit required — see local rules.
  • Asturias licence + Alfilorios coto permit required
  • Bank only — no boats (drinking-water reservoir)
  • Limited to 3 anglers/day and 3 trout/angler/day; sin muerte once the cup is reached
  • Stocked with adult native brown trout.
What's coming
Plan ahead
5-day outlook
Condition match
59%
Cloud50%
Wind65%
Temp60%

A reasonable day here, though cloud isn't quite in the sweet spot.

Other water nearby · 5
Why this score
  • summer conditions with overcast skies and breezy wind.
  • Below seasonal norm but level steady — fish should be settled to the new shoreline.
Related guides
Booking & contacts