Freestone · Mixed · Castilla y León

Río Cega

Río Cega terrain map
Terrain map

The Cega rises in the Sierra de Guadarrama (Navafría–Pajares de Pedraza area) and threads down through the Segovian uplands.

Species

Slow going — pick your moments

Low and clear — careful approach country. Cover and shadow are doing the work today.

45% confidence — limited data
Water temperature for brown trout
Cool — slow
9°C est.ideal 10–16°C
0°14°28°
Why this score · for brown trout
  • Temperature7528% weight
  • Flow5522% weight
  • Clarity1518% weight
  • Feeding Time4513% weight
  • Pressure807% weight
  • Prey Activity3212% weight
Conditions
Level
0.39 m
Water temp
8.6°C
Estimated
Clarity
Very coloured
Colouring up
Air temp
13°C
Wind
SW 12 km/h
Light breeze
Pressure
1015 hPa
Rain · 48h
0.0 mm
No meaningful rain
Rain · ahead
12.0 mm
Moderate 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
Through the Castilla y León trout season. Spring olives April through May; summer sedges in evening hours; small dark flies into autumn close.
Where
Pool tails and pocket water through the Segovian valley. The Cega runs from the Guadarrama — clear granite water, intimate scale.
Method
Upstream dry to risers; dry-dropper through the riffles. The water reads clear — long leader, fine tippet, careful approach.
Kit
9 ft #4 — Castilian default. Floating line, 12 ft leader to 4 lb fluoro. Studded boots — granite cobble runs slick.
Why this works
Poor conditions. Pressure is favourable (80), Clarity is weakest (15).
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
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.
  • Castilla y León fishing licence required
  • Las Pegueras and Puente Segoviano cotos require additional tramo permits; both have fly-only and/or sin muerte stretches
  • JCyL pesca visor is the source of truth.
Directions
Apple MapsGoogle Maps
About this water

The Cega rises in the Sierra de Guadarrama (Navafría–Pajares de Pedraza area) and threads down through the Segovian uplands. JCyL manages several recognised cotos here — Las Pegueras (fly-only / sin muerte) and Puente Segoviano are the standout fly-fishing tramos. Cool mountain origins keep the upper river fishable longer than most central-meseta waters; lower reaches warm and shrink in late summer.

  • Mixed
Seasons & zones
  • TroutLast Sunday of March → 31 July
Other water nearby · 5