Freestone · Limestone · Navarra, ES

Río Urrobi

Río Urrobi venue image
Tomorrow · Closed season
G&H Sedge
Forecast · Tomorrow
Closed season
Out of season. Try elsewhere.
90% projected
Today's fly
G&H Sedge
G&H Sedge
Conditions on the water · Tomorrow
Live gauge
Level
Falling
0.12 m
Dropping after lift
Water temp14.2°C
ClaritySlightly coloured
Weather17°C
WindN 10 km/h
Pressure1028 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Ideal
14°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.
Likely species
Gammarids
Hatch timeline · tomorrowPeak at 18 Uhr

12 Uhr(now) — Black Gnat

Stage: On emergersApproach: Emerger or dryActivity: 51%
Also:Iron Blue23%Cinnamon Sedge21%
Peak emergence window8 food groups active

Peak activity at 18 Uhr — Caperer (Caperer, 11 food groups active)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds as a supporter.

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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 · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
1
Daddy Long LegsHatch
2
3
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1

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.
  • Gobierno de Navarra fishing licence required
  • Check the exact tramo and access status before travel because this is a smaller, more locally sensitive tributary.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Río Erro
9.0 km
0
Brown trout
Río Irati
12 km
0
Brown trout
Río Salazar
19 km
0
Brown trout
Río Ulzama
27 km
0
Brown trout
Río Areta
15 km
Brown trout
Gallery · 1
  1. Terrain map of the venue
    Terrain map
Water quality (WFD)
  • Ecology: High
  • Chemical: Unknown
What this classification means

WFD ecological status Moderate → High corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody ES091MSPF533 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.

WFD classification · ES091MSPF533

The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity76 × 12%9.1
Conditions total= 86
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 May → 30 June

    RSS Irati–Erro basin (2,728 permits in 2026). All catch-and-release. Extendable to 15 Jul by resolution. Daily basin permit required.

Related guides
Fly Fishing Near Pamplonafeatured in this city guidePyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
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