Spate · Mixed · Cantabria, ES

Besaya

Besaya — El río Besaya
Contributor photo

El río Besaya

Rubén Díaz Caviedes (https://www.flickr.com/photos/59268554@N05) - CC BY-SA

The Besaya joins the Saja to form a combined estuary.

Marginal · Brown Trout
Klinkhammer · 14-18
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
  • Level0.87 mDropping after lift
  • Water temp18.5°C
  • ClarityClear
Today’s fly
Klinkhammer
Klinkhammer14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.87 m
lowspate
Water temp18.5°C
ClarityClear
Weather18°C
WindN 6 km/h
Pressure1019 hPa
Rain · recent15.9 mm
Rain · ahead13.0 mm

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

Water temperature for brown trout
Warm — slow
19°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
⚠️ Water at 18.5°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise poor — water clarity is in the right range.
Hatch timeline · todayQuiet day

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Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey

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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
Trout seasonSeason
1
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.
  • Se requiere licencia de pesca cántabra
  • Los cotos gestionados de Somahoz e Iguña deben consultarse por anexo y normas de tramo antes de viajar.
What's coming
Plan ahead
5-day outlook
Water here around 19°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
  1. Besaya — El río Besaya
    El río Besaya
  2. Terrain map of the venue
    Terrain map
About this water

The Besaya joins the Saja to form a combined estuary. Official notices reference the Besaya cotos of Somahoz and Iguña. Mixed geology with some urban influence in the lower reaches, but upper sections have genuine wild brown trout character in bouldery runs. Less glamorous than the Saja but relevant for structured trout fishing in managed cotos. SAIH gauge coverage available.

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

WFD classification · ES018MSPFES111MAR000370

The full read · show the working · for brown trout · confidence 80%
How the 37 is built — score × weight = contribution
Temperature47 × 28%13.2
Flow40 × 22%8.8
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity20 × 12%2.4
Conditions total= 52
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
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
  • Trout1 April → 31 July
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts