Freestone · Limestone · Aragón, ES

Ara

The Ara River rushing through a rocky gorge lined with autumn-coloured trees in the Aragonese Pyrenees, Huesca.

A premier limestone gorge river flowing from Ordesa National Park headwaters through dramatic Alpine valleys.

Today · Not the day for it
Elk Hair Caddis
Forecast · Today
Not the day for it
Not much stacked in your favour today. Worth an hour if you are nearby, not worth the special trip.
45% projected
Today's fly
Elk Hair Caddis
Elk Hair Caddis
Conditions on the water · Today
Live gauge
Level
Rising
0.14 m
Lifting fast
Water temp15.7°C
ClarityUnfishable
Weather17°C
WindN 9 km/h
Pressure1024 hPa
Rain · recent3.4 mm
Rain · ahead2.8 mm

The nearest gauge is at Boltaña. It doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Ideal
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 temperature is working for you, but river flow is the limiting factor today.
Likely species
Caddisflies
Gammarids
Hatch timeline · todayPeak at 6pm

12pm(now) — Reed Smut

Stage: On emergersApproach: Emerger or dryActivity: 45%
Also:Pale Watery25%Flying Ants22%Cinnamon Sedge21%
Peak emergence window9 food groups active

Peak activity at 6pm — Evening Sedge (Evening Sedge, Weather boost)

Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 2 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
Lac des Especières
15 km
Brown trout
Río Gállego
18 km
0
Brown trout
Gave d'Estaubé
21 km
Brown trout · Grayling
Cinca
25 km
Brown trout
Gave du Marcadau
28 km
0
Brown trout · Grayling
Gallery · 2
  1. The Ara River rushing through a rocky gorge lined with autumn-coloured trees in the Aragonese Pyrenees, Huesca.
    The Ara River in the Aragonese Pyrenees
  2. Terrain map of the venue
    Terrain map
About this water

A premier limestone gorge river flowing from Ordesa National Park headwaters through dramatic Alpine valleys. Clear alkaline freestone water tumbles through limestone formation, holding wild browns in technical pocket and pool structure. Alpine character demands careful presentation and strong wading skills. Ordesa scenery is spectacular.

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

WFD classification · ES091MSPF761

The full read · show the working · for Brown Trout · confidence 75%
How the 75 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow40 × 22%8.8
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity56 × 12%6.7
Conditions total= 75
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