Freestone · Limestone · Catalonia

Upper Segre

Upper Segre terrain map
Terrain map

The upper Segre above La Seu d'Urgell is a limestone river rising in high Pyrenees near Andorra and flowing southeast through mountain valleys and gorges.

Species

A side-water session, not the main event

Low and clear — careful approach country. Long leader, small flies, slower casts.

75% confidence in this read
Water temperature for brown trout
Cool — slow
6°C est.ideal 1016°C
0°14°28°
Why this score · for brown trout
  • Temperature3828% weight
  • Flow8022% weight
  • Clarity9518% weight
  • Feeding Time5013% weight
  • Pressure807% weight
  • Prey Activity2812% weight
Conditions
Level
0.20 m
Water temp
6.2°C
Estimated
Clarity
Clear
Air temp
4°C
Wind
N 7 km/h
Light breeze
Pressure
1018 hPa
Rain · 48h
0.4 mm
No meaningful rain
Rain · ahead
3.5 mm
Light rain · next 48h

Live readings — water temperature is an estimate where the gauge does not record it.

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 conditions. Clarity is favourable (95), Prey activity is weakest (28).
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
1

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Permits & access
Permit required — see local rules.
  • Catalan fishing licence required
  • Controlled trout waters may require a ZPC permit, and legal dates differ between low-mountain, high-mountain, with-kill, and no-kill sectors, so check the current Generalitat rules for the exact zone.
Directions
About this water

The upper Segre above La Seu d'Urgell is a limestone river rising in high Pyrenees near Andorra and flowing southeast through mountain valleys and gorges. Clear, alkaline freestone holds excellent wild brown trout with high biodiversity. Technical runs alternate with pocket water and pools throughout. The Segre's upper reaches — Organyà, Montferrer, La Seu d'Urgell zones — are the true trout destination. Good dry-fly and nymphing opportunities throughout.

  • Limestone
Seasons & zones
  • Troutdepends on Catalan zone class → depends on Catalan zone class
Other water nearby · 5
Booking & contacts