Spate · Mixed · Gipuzkoa, País Vasco

Urola

Urola — Urola
Contributor photo

Urola

Aqib Hassan Ali Khan (https://commons.wikimedia.org/w/index.php?title=User:Aqib_Hassan_Ali_Khan&action=edit&redlink=1) - CC BY-SA

A central Gipuzkoa trout river of excellent character, flowing through relatively unspoilt catchment toward the coast.

Poor · Brown Trout
Klinkhammer · 14-18
Poorlive now
Not the day for it
River temperature is the limiting factor today, not the flow. This is not the day to push it. Check the thermal advice above before you head out.
90% confidence
What moved it
  • LevelProxyvia Urumea
  • Water temp22.3°C
  • ClarityClear
Today’s fly
Klinkhammer
Klinkhammer14-18
High-confidence seasonal pick
Conditions on the water
Proxy gauge
Level
Steady
Proxy
via Urumea
Water temp22.3°C
ClarityClear
Weather29°C
WindNE 12 km/h
Pressure1016 hPa
Rain · recent0.0 mm
Rain · ahead1.6 mm

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

Water temperature for brown trout
Warm — slow
22°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 22.3°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
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
Sea trout runRun
1
2
1
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.
  • Gipuzkoa fishing licence required
  • Treat the Urola as a trout river with some sea-trout influence rather than as a migratory-fish destination defined by old salmon logic.
What's coming
Plan ahead
5-day outlook
Water here around 22°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
  1. Urola — Urola
    Urola
  2. Terrain map of the venue
    Terrain map
About this water

A central Gipuzkoa trout river of excellent character, flowing through relatively unspoilt catchment toward the coast. At 59 km, it provides diverse habitat with particular strength in middle and upper sections holding abundant wild browns. Mixed geology ensures good water quality and varied substrate. Spate nature (4-hour response) provides reliable fishing windows for winter browns and spring/summer sea trout. Less developed than salmon-focused neighbours, offering quieter angling with consistent quality. Predominantly wild and undisturbed habitat with good riparian cover. Spring (March–May) excellent for browns; sea trout extend season May onwards. Ideal for those seeking wild river experience without permit complexity.

  • Mixed
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Unknown
What this classification means

WFD ecological status Poor → Moderate corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody ES017MSPFES111R034020 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.

WFD classification · ES017MSPFES111R034020

The full read · show the working · for brown trout · confidence 90%
How the 10 is built — score × weight = contribution
Temperature5 × 28%1.4
Flow15 × 22%3.3
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity21 × 12%2.5
Limiting factor: Water temperature (22.3°C) is outside Brown Trout's preferred range (10–16°C)= 38
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Urumeaproxy
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.
A drop and clear would lift the flow and clarity scores.
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Sea trout1 May → 31 July
  • Troutthird Sunday of March → 31 July

Sea trout: Variable seasonal (2026)

Salmon: Heritage only (2026) — Heritage salmon river. In practical angling terms, salmon are not a target species — focus on trout and sea trout.

Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts