Freestone · Mixed · Aragón

Ésera

Ésera venue image
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The Ésera drains high granite peaks and flows through a spectacular limestone gorge — two distinct characters creating diverse fishing habitat.

Marginal · Brown Trout
Klinkhammer · 14-18
Slow going — pick your moments
River lifting fast on the rain. Take your time — read the water before you cast.
45% confidence
limited data
What moved it
  • Level0.97 mLifting fast
  • Water temp12.1°C
  • ClarityVery colouredColouring up
Today’s fly
Klinkhammer
Klinkhammer14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Rising
0.97 m
Lifting fast
Water temp12.1°C
ClarityVery coloured
Weather12°C
WindNE 10 km/h
Pressure1022 hPa
Rain · recent0.1 mm
Rain · ahead0.0 mm

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

Water temperature for brown trout
Ideal
12°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
Poor — water temperature is working for you, but water clarity is the limiting factor today.
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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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
2
1
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Alpine RhithrogenaHatch
1
2
2
1
Large Dark OliveHatch
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.
  • Aragón fishing licence required
  • Named cotos, social cotos, and special high-mountain sections can have different dates, permit allocations, and method rules
  • Check the current Aragón annual fishing plan (Plan de pesca de Aragón) for the exact beat before visiting.
What's coming
Plan ahead
5-day outlook
Fishing better nearby · 5
Cinca
22 km
80
Brown trout
Garona / Garonne (headwaters)
32 km
80
Brown trout
Isábena
21 km
Brown trout
Noguera de Tor
30 km
Brown trout
Noguera Ribagorzana
41 km
Brown trout
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

The Ésera drains high granite peaks and flows through a spectacular limestone gorge — two distinct characters creating diverse fishing habitat. Upper granite reaches are cold, freestone with strong wild-trout populations; the Ventamillo gorge section combines limestone clarity with dramatic alpine scenery. Technical water throughout. The transition between geology creates excellent holding habitat.

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

WFD ecological status Good → High corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody ES091MSPF772 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.

WFD classification · ES091MSPF772

The full read · show the working · for brown trout · confidence 45%
How the 30 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow55 × 22%12.1
Clarity15 × 18%2.7
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity34 × 12%4.1
Limiting factor: Water is very coloured — too coloured for Brown Trout= 58
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
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
  • Troutthird Sunday of March → 31 August
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts