Freestone · Limestone · Andalucía / Jaén (Sierra de Cazorla–Las Villas), ES

Guadalquivir (upper / Cazorla headwaters)

Clear spring water cascading over moss-covered rock at the source of the Guadalquivir river in the Sierra de Cazorla natural park
Poor · Brown Trout
Perdigón · 14-18
Closed season
Out of season. Try elsewhere.
Closed — confidence not applicable today.
What moved it
  • Level0.04 mLast reading 7h ago
  • Water temp8.4°C
  • ClarityClear
Today's fly
Perdigón
Perdigón14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.04 m
Last reading 7h ago
Water temp8.4°C
ClarityClear
Weather14°C
WindE 5 km/h
Pressure1022 hPa
Rain · recent0.0 mm
Rain · ahead0.0 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
Cool — slow
8°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.
Likely species
Stoneflies
Gammarids
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 7 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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Evidence
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
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
Fly box · Brown Trout
Permits & access
Permit required — see local rules.
  • Se requiere licencia de la Junta de Andalucía más el recargo de trucha
  • Los cotos y acotados gestionados del alto Guadalquivir pueden tener sus propias normas de asignación y de método, así que confirma la orden BOJA vigente y las condiciones del permiso local antes de desplazarte.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Río Borosa
7.0 km
0
Brown trout
Upper Guadalquivir
9.0 km
0
Brown trout
Río Castril
26 km
0
Brown trout
Río Madera (Bajo)
31 km
0
Brown trout
Río Segura (headwaters)
35 km
0
Brown trout · Rainbow trout
Gallery · 2
  1. Clear spring water cascading over moss-covered rock at the source of the Guadalquivir river in the Sierra de Cazorla natural park
    The source of the Guadalquivir, Sierra de Cazorla
  2. Terrain map of the venue
    Terrain map
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Unknown
What this classification means

WFD ecological status Poor → Moderate corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody ES050MSPF011009044 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.

WFD classification · ES050MSPF011009044

The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature72 × 28%20.2
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time45 × 13%5.9
Pressure80 × 7%5.6
Insect activity41 × 12%4.9
Conditions total= 71
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout durante los periodos hábiles (check current BOJA) → during the designated open period
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts