Spate · Limestone · Cantabria, ES

Nansa

Nansa venue image
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A serious western Cantabrian salmonid basin whose salmon status is now more historical and regulatory than practically useful for most anglers.

Fair · Brown Trout
Klinkhammer · 14-18
Fairlive now
A side-water session, not the main event
River steady at a fishable height. A patient day. Fish the cover and stay with it.
75% confidence
What moved it
  • Level0.86 mDropping in the last 6h
  • Water temp17.5°C
  • ClarityClear
Today’s fly
Klinkhammer
Klinkhammer14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.86 m
lowspate
Water temp17.5°C
ClarityClear
Weather19°C
WindN 4 km/h
Pressure1019 hPa
Rain · recent0.0 mm
Rain · ahead15.6 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for brown trout
Warm — slow
18°C est.ideal 10–16°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
Good — water clarity is working for you, but time of day is the limiting factor today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 2 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 · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
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
Permits & access
Permit required — see local rules.
  • Cantabrian fishing licence required
  • The Nansa's annex-driven rules and protected-zone structure matter more than old salmon prestige, so check the exact stretch before travel.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Bullón
16 km
38
Brown trout
Río Deva
15 km
30
Brown trout · Salmon · Sea trout
Río Escudo
16 km
20
Brown trout
Saja
14 km
Brown trout · Sea trout
Saja
14 km
Brown trout · Sea trout
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

A serious western Cantabrian salmonid basin whose salmon status is now more historical and regulatory than practically useful for most anglers. Rugged limestone character with 5-hour spate response. Rocky tumbling sections alternate with deeper pools. Management and conservation rules are central to the fishing story. Wild brown trout in upper sections and sea trout later in the season are the real practical draw.

  • Limestone
Water quality (WFD)
  • Ecology: Good
  • Chemical: Unknown

WFD classification · ES018MSPFES118MAR000480

The full read · show the working · for brown trout · confidence 75%
How the 60 is built — score × weight = contribution
Temperature66 × 28%18.5
Flow40 × 22%8.8
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity41 × 12%4.9
Conditions total= 60
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
Apple MapsGoogle Maps
Seasons & zones
  • Troutthird Sunday of March → 31 July

Sea trout: Variable seasonal (2026)

Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts