Freestone · Limestone · Aragón, ES

Aragón Subordán

Aragón Subordán — Huesca (provincia), rápidos 1993 01

The Aragón Subordán flows through the dramatic Hecho valley before joining the main Aragón.

Good · Brown Trout
Grasshopper Pattern · 10-14
Goodlive now
A proper day on the water
Low and clear — careful approach country. Stay small, stay accurate.
90% confidence
What moved it
  • Level0.10 mLast reading 20h ago
  • Water temp16.4°C
  • ClarityClear
Today's fly
Grasshopper Pattern
Grasshopper Pattern10-14
Proven pattern for this period
Conditions on the water
Live gauge
Level
Steady
0.10 m
Last reading 20h ago
Water temp16.4°C
ClarityClear
Weather17°C
WindSE 16 km/h
Pressure1019 hPa
Rain · recent14.0 mm
Rain · ahead21.3 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
Warm — slow
16°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
Good — water clarity is right today, though river flow could be better.
Likely species
Caddisflies
Gammarids
Hatch timeline · todayPeak at 11am

Hatch predictions

Today's headline hatch shown — see all 12 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 3 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
1
Alpine RhithrogenaHatch
2
3
3
2
Sculpin / Baitfish (Rivers)Hatch
2
3
3
3
3
3
3
3
2
March BrownHatch
2
3
2
Late March BrownHatch
2
3
2

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, so check the current Aragón plan for the exact beat.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Veral
7.0 km
Brown trout
Pyrenean Ibones (high-mountain lakes)
14 km
Brown trout
Gave d'Aspe
32 km
Brown trout · Grayling
Río Salazar
34 km
Brown trout
Río Gállego
35 km
Brown trout
Gallery · 2
  1. Aragón Subordán — Huesca (provincia), rápidos 1993 01
    Huesca (provincia), rápidos 1993 01
  2. Terrain map of the venue
    Terrain map
About this water

The Aragón Subordán flows through the dramatic Hecho valley before joining the main Aragón. Limestone gorge creates clear, alkaline freestone water with strong wild-trout populations. The Oza tributary is a classic high-mountain stream ideal for technical dry-fly work. Good wading required.

  • Limestone
Water quality (WFD)
  • Ecology: Good
  • Chemical: Unknown

WFD classification · ES091MSPF516

The full read · show the working · for Brown Trout · confidence 90%
How the 77 is built — score × weight = contribution
Temperature86 × 28%24.1
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity69 × 12%8.3
Conditions total= 77
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout third Saturday of March → 15 October
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts