Freestone · Limestone · Aragón / Catalonia, ES

Noguera Ribagorzana

Noguera Ribagorzana — Embalse de Sopeira Rio Noguera Ribagorzana

A major river straddling the Aragón–Catalonia border and one of the Pyrenees' most important trout streams.

Marginal · Brown Trout
Klinkhammer · 14-18
Marginallive now
Slow going — pick your moments
River temperature is the limiting factor today, not the flow. Fish dawn or dusk if you go at all, and handle everything with extra care.
80% confidence
What moved it
  • Level1.05 mDropping in the last 6h
  • Water temp19.0°C
  • ClarityClear
Today's fly
Klinkhammer
Klinkhammer14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
1.05 m
Dropping in the last 6h
Water temp19.0°C
ClarityClear
Weather23°C
WindN 7 km/h
Pressure1018 hPa
Rain · recent0.0 mm
Rain · ahead2.3 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
19°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
Water at 19°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
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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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 3 with Pro.

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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
Alpine RhithrogenaHatch
2
3
3
2
Sculpin / Baitfish (Rivers)Hatch
2
3
3
3
3
3
3
3
2
March BrownHatch
2
3
2
Large StoneflyHatch
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.
  • Border-water and named-section rules matter here
  • Check the exact Aragón or Catalonia licence requirement, plus any coto or ZPC permit and special seasonal rules for the precise stretch you plan to fish.
What's coming
Plan ahead
5-day outlook
Water here around 19°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
  1. Noguera Ribagorzana — Embalse de Sopeira Rio Noguera Ribagorzana
    Embalse de Sopeira Rio Noguera Ribagorzana
  2. Terrain map of the venue
    Terrain map
About this water

A major river straddling the Aragón–Catalonia border and one of the Pyrenees' most important trout streams. Limestone throughout — alpine karst headwaters transition to dramatic canyon sections with crystal-clear freestone and technical pocket water. Strong wild brown trout genetics persist despite WFD 'Poor' ecological status (hydropower abstractions and flow regulation affect the middle reaches). Upper headwaters retain the best habitat. High altitude moderates summer temperatures. The Noguera de Tor enters through the UNESCO Vall de Boí. Access from Sort (Catalonia) or Beranuy (Aragón).

  • Limestone
The full read · show the working · for Brown Trout · confidence 80%
How the 34 is built — score × weight = contribution
Temperature39 × 28%10.9
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time50 × 13%6.5
Pressure80 × 7%5.6
Insect activity65 × 12%7.8
Conditions total= 66
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout check named border section or controlled zone → check named border section or controlled zone
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts