Freestone · Mixed · Castilla y León

Río Ebro (Burgos — Las Merindades to Miranda)

Río Ebro (Burgos — Las Merindades to Miranda) — Frías
Contributor photo

Frías

santiagolopezpastor (https://www.flickr.com/photos/100759833@N05) - CC BY-SA

The Ebro through Burgos province — from the Cantabrian-Burgos border at Arroyo, through Las Merindades, to Miranda de Ebro on the Álava boundary.

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
  • Level0.96 mLast reading 1h ago
  • Water temp18.8°C
  • ClarityClear
Today’s fly
Klinkhammer
Klinkhammer14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.96 m
Last reading 1h ago
Water temp18.8°C
ClarityClear
Weather19°C
WindN 7 km/h
Pressure1019 hPa
Rain · recent0.0 mm
Rain · ahead2.0 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 18.8°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

Hatch predictions

Today's headline hatch shown — see all 4 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

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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
2
1
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
1

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.
  • Castilla y León (Burgos) licence required
  • Check JCyL pesca visor for Las Merindades tramo allocations between Trespaderne and Miranda.
What's coming
Plan ahead
5-day outlook
Water here around 19°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
  1. Río Ebro (Burgos — Las Merindades to Miranda) — Frías
    Frías
  2. Terrain map of the venue
    Terrain map
About this water

The Ebro through Burgos province — from the Cantabrian-Burgos border at Arroyo, through Las Merindades, to Miranda de Ebro on the Álava boundary. This is bigger water than the Las Merindades tributaries: a true middle river, partly regulated, with longer holding pools and slower clearance. Wild brown trout dominate, with some coarse fish in the lower stretches. Best fished from late April through June; the middle reaches around Trespaderne and Frías hold the most accessible water.

  • Mixed
The full read · show the working · for brown trout · confidence 80%
How the 35 is built — score × weight = contribution
Temperature42 × 28%11.8
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity63 × 12%7.6
Conditions total= 65
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
  • TroutLast Sunday of March → 31 July
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts