Freestone · Mixed · Aragón, ES

Ésera

Ésera — File:Benasque - Plan de Turpí - Ésera 01.jpg
Prime · Brown Trout
Grasshopper Pattern · 10-14
Primelive now
About as good as it gets
River steady at a fishable height. On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
75% confidence
What moved it
  • Level0.97 mLast reading 58 min ago
  • Water temp9.9°C
  • ClarityClear
Today's fly
Grasshopper Pattern
Grasshopper Pattern10-14
Proven pattern for this period
Conditions on the water
Live gauge
Level
Steady
0.97 m
Last reading 58 min ago
Water temp9.9°C
ClarityClear
Weather9°C
WindN 4 km/h
Pressure1021 hPa
Rain · recent0.9 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
Cool — slow
10°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
Excellent — water temperature is right today, though insect activity could be better.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 6 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds with Pro.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

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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 · August 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
21 km
81
Brown trout
Cinca
22 km
Brown trout
Noguera de Tor
30 km
Brown trout
Garona / Garonne (headwaters)
32 km
81
Brown trout
Noguera Ribagorzana
41 km
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
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 75%
How the 81 is built — score × weight = contribution
Temperature98 × 28%27.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity47 × 12%5.6
Conditions total= 80
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout third Sunday of March → 31 August
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts