Spate · Mixed · Gipuzkoa, País Vasco

Oria

Oria — Lasarto el monto cropped
Marginal · Brown Trout
Pheasant Tail Nymph · 14-18
Marginallive now
Slow going — pick your moments
Low and clear — careful approach country. Cover and shadow are doing the work today.
50% confidence
What moved it
  • Level0.30 mDropping in the last 6h
  • Water temp17.1°C
  • ClarityClear
Today's fly
Pheasant Tail Nymph
Pheasant Tail Nymph14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Falling
0.30 m
lowspate
Water temp17.1°C
ClarityClear
Weather16°C
WindS 9 km/h
Pressure1024 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

Live readings only. Trends shown where the gauge supports them.

Water temperature for Brown Trout
Warm — slow
17.1°Cideal 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
Poor — water clarity is working for you, but river flow is the limiting factor today.
Likely species
Gammarids
Evidence
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · October 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
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2
Large StoneflyHatch
2
3
2

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

Ranked for today
Fly box · Brown Trout
Permits & access
Permit required — see local rules.
  • Se requiere licencia de pesca de Gipuzkoa
  • Comprueba el tramo exacto con nombre propio y cualquier norma de asignación tipo coto antes de viajar; no traslades la lógica fronteriza del Bidasoa al Oria.
What's coming
Plan ahead
5-day outlook
Fishing better nearby · 5
Bidasoa
30 km
72
Brown trout · Sea trout
Urola
21 km
65
Brown trout
Deba
27 km
33
Brown trout
Urumea
7.0 km
30
Brown trout · Sea trout
Deba
27 km
Brown trout
Gallery · 2
  1. Oria — Lasarto el monto cropped
    Lasarto el monto cropped
  2. Terrain map of the venue
    Terrain map
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Unknown
What this classification means

WFD ecological status Bad → Moderate corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody ES017MSPFES028MAR002662 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.

WFD classification · ES017MSPFES028MAR002662

The full read · show the working · for Brown Trout · confidence 50%
How the 30 is built — score × weight = contribution
Temperature64 × 28%17.9
Flow15 × 22%3.3
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity50 × 12%6.0
Limiting factor: River is falling — Brown Trout prefers medium flow= 57
Can you trust it?
Water temperaturelive gauge readinggauge
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.
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
  • Trout tercer Sunday de 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