Freestone · Mixed · La Seu d'Urgell to Lleida, Catalonia

Río Segre

Riu Segre a la Mitjana, Lleida (gener 2009) - panoramio

Major Catalan Pyrenean river flowing from the Cerdanya plateau (Puigcerdà) through La Seu d'Urgell toward Lleida.

Good · Brown Trout
Grasshopper Pattern · 10-14
Goodlive now
A proper day on the water
River high but settled. Match the colour and fish the seams.
90% confidence
What moved it
  • Level0.87 mDropping in the last 6h
  • Water temp17.4°C
  • ClarityClear
Today's fly
Grasshopper Pattern
Grasshopper Pattern10-14
Proven pattern for this period
Conditions on the water
Live gauge
Level
Falling
0.87 m
Dropping in the last 6h
Water temp17.4°C
ClarityClear
Weather18°C
WindNE 10 km/h
Pressure1021 hPa
Rain · recent0.0 mm
Rain · ahead6.1 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
17°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 — river flow is right today, though time of day 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

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
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1
Blue Winged OliveHatch
1
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.
  • Catalan fishing licence (llicència de pesca) required
  • Upper Segre carries multiple ZPCs (Zones de Pesca Controlada) — La Seu d'Urgell, Bellver, Martinet, Oliana area — each with its own permit allocation, season class (alta muntanya vs baixa muntanya), and method rules (amb mort vs sense mort)
  • Confirm the exact tramo and current Generalitat Resolució de vedes before planning.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Catalan Pyrenees controlled zones
3.0 km
Brown trout
Upper Segre
5.0 km
Brown trout
Noguera de Cardós
23 km
Brown trout
Noguera Pallaresa
29 km
Brown trout
Llobregat
30 km
Brown trout
Gallery · 2
  1. Riu Segre a la Mitjana, Lleida (gener 2009) - panoramio
  2. Terrain map of the venue
    Terrain map
About this water

Major Catalan Pyrenean river flowing from the Cerdanya plateau (Puigcerdà) through La Seu d'Urgell toward Lleida. The upper river above Oliana reservoir is the trout fishery — clear freestone water in alpine/upper-Pyrenean character, holding wild Mediterranean-lineage browns across multiple ZPCs. La Seu d'Urgell is the natural access hub. Below the Oliana reservoir, the river enters a regulated, slower, warmer reach better known as a cyprinid and predator fishery — those lower beats aren't covered in detail here.

  • Mixed
The full read · show the working · for Brown Trout · confidence 90%
How the 75 is built — score × weight = contribution
Temperature56 × 28%15.7
Flow95 × 22%20.9
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity68 × 12%8.2
Conditions total= 75
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 21 March → 12 October
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts