Freestone · Mixed · Aragón, ES

Ésera

Ésera — File:Benasque - Plan de Turpí - Ésera 01.jpg

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

Poor · Brown Trout
Grasshopper Pattern · 10–14
Closed season
Out of season. Try elsewhere.
Closed — confidence not applicable today.
What moved it
  • Level1.40 mDropping after lift
  • Water temp8.4°C
  • ClarityUnfishableClearing
Today's fly
Grasshopper Pattern
Grasshopper Pattern10–14
Proven pattern for this period
Conditions on the water
Live gauge
Level
Steady
1.40 m
Dropping after lift
Water temp8.4°C
ClarityUnfishable
Weather7°C
WindN 3 km/h
Pressure1013 hPa
Rain · recent31.9 mm
Rain · ahead10.9 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
Cool — slow
8°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.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 2 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 4 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 · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Evening SedgeHatch
2
3
3
3
2
Alpine RhithrogenaHatch
1
2
2
1
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
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
Other water nearby · 5
Isábena
19 km
0
Brown trout
Cinca
25 km
0
Brown trout
Noguera de Tor
28 km
0
Brown trout
Garona / Garonne (headwaters)
32 km
0
Brown trout
Noguera Ribagorzana
39 km
0
Brown trout
Gallery · 2
  1. Ésera — File:Benasque - Plan de Turpí - Ésera 01.jpg
    File:Benasque - Plan de Turpí - Ésera 01.jpg
  2. Terrain map of the venue
    Terrain map
About this water

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 55%
How the 0 is built — score × weight = contribution
Temperature72 × 28%20.2
Flow40 × 22%8.8
Clarity0 × 18%0.0
Feeding Time45 × 13%5.9
Pressure80 × 7%5.6
Insect activity31 × 12%3.7
Limiting factor: Water is unfishable — too coloured for Brown Trout= 44
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
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
  • Trout third Saturday of March → 31 August
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts
At a glance

Ésera is a freestone river in Aragón, Spain. It sits at about 947 m above sea level. The river is described as roughly 98 km long. The species listed for this water is brown trout. The trout season is recorded as running from third Saturday of March to 31 August. Core methods listed: dry fly; small nymph; czech nymphing. Level and flow data for this water is linked from the gauge “Ésera-Eriste (upper, A145) + Ésera-Campo (mid, A258) + Ésera-Graus (lower fishery, A013)”. Its Water Framework Directive ecological status is recorded as high. Nearby waters in our listings include Isábena at 19 km, Cinca at 25 km and Noguera de Tor at 28 km.