Spate · Slate · Asturias, Spain

Río Ser

Ser terrain map
Terrain map

Headwater country — the Ser is the kind of river you find when you've been following a track that stopped looking like a road some time ago.

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.

50% confidence in this read
Water temperature for brown trout
Cool — slow
5°C est.ideal 10–16°C
0°14°28°
Why this score · for brown trout
  • Temperature2528% weight
  • Flow4022% weight
  • Clarity9518% weight
  • Feeding Time4513% weight
  • Pressure807% weight
  • Prey Activity1112% weight
Conditions
Level
0.50 m
Water temp
5.2°C
Estimated
Clarity
Clear
Air temp
5°C
Wind
S 4 km/h
Calm
Pressure
1019 hPa
Rain · 48h
0.5 mm
No meaningful rain
Rain · ahead
1.1 mm
No meaningful 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
Fair conditions. Clarity is favourable (95), Prey activity is weakest (11).
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.

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

Headwater country — the Ser is the kind of river you find when you've been following a track that stopped looking like a road some time ago. Wild browns that have seen nothing but natural flies and the occasional heron. The fishing is not complicated. Getting there takes some doing.

Under the surface

The Ser is a smaller slate-fed river in the eastern Asturian system, spate-responsive and amber-toned. The upper reaches are step-pool through Cantabrian slate; the descent is steep and response to rainfall immediate. The Ser maintains its mountain character throughout — responsive, slate-stained, belonging fully to the Cantabrian system. The pools available are brief; the character is descent and response.

Wading: Slick wet slate slabs at step lips

  • Slate
  • Confined
  • Cascade
  • Step pool
Other water nearby · 5
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