Karst Spring · Limestone · Castilla y León

Río Omecillo

Río Omecillo venue image
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A cross-border Ebro tributary on the Burgos-Álava boundary, joining the Ebro near Bergüenda.

Species

About as good as it gets

River steady at a fishable height. About as fair as it ever gets — go properly.

75% confidence in this read
Water temperature for brown trout
Ideal
11°C est.ideal 1016°C
0°14°28°
Why this score · for brown trout
  • Temperature10028% weight
  • Flow8022% weight
  • Clarity9518% weight
  • Feeding Time5013% weight
  • Pressure807% weight
  • Insect activity5712% weight
Conditions
Level
0.53 m
Water temp
10.6°C
Estimated
Clarity
Clear
Air temp
14°C
Wind
N 8 km/h
Light breeze
Pressure
1016 hPa
Rain · 48h
0.0 mm
No meaningful rain
Rain · ahead
2.8 mm
Light rain · next 48h

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

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
Excellent — water temperature is right today, though time of day could be better.
Through the year
0–3 scale · June highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
Brown SedgeHatch
2
3
2
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Blue Winged OliveHatch
2
3
3
3
3
2
Mayfly (Green Drake)Hatch
2
2

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

Gallery · 1
  1. Terrain map of the venue
    Terrain map
Permits & access
Permit required — see local rules.
  • Castilla y León (Burgos) licence; check Álava boundary tramos for any cross-border rules near the gauge at Bergüenda.
Directions
About this water

A cross-border Ebro tributary on the Burgos-Álava boundary, joining the Ebro near Bergüenda. The Omecillo is karst-influenced trout water — limestone clarity, steady flows, characteristic Álava-Burgos pool-and-riffle structure. The gauge sits in Álava but the river is mostly Burgos. Wild brown trout. Best fished from May through July; the middle reaches around Quintana-Martín Galíndez hold the most accessible water.

  • Limestone
Seasons & zones
  • TroutLast Sunday of March → 31 July
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