The headwaters of the Guadalquivir in the Sierra de Cazorla natural park — cold, clear limestone water with wild brown trout. Entirely distinct from the lowland Guadalquivir where no game fishing occurs. No pike in this upper reach.
- Limestone
Rules at a glance
- Free fishing
- Fly only
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
Live now
Conditions on the water
Trends shown where the gauge supports them
Level
Dry recently
No gauge reading
Water temp
8.0°C
Estimated
Clarity
Clear
Air temp
8°C
Wind
NE 5 km/h
Calm
Pressure
1017 hPa
Rain · 48h
0.0 mm
No meaningful rain
Rain · ahead
7.4 mm
Light rain · next 48h
Live readings — water temperature is an estimate where the gauge does not record it.
How to fish · for brown trout
The brief
When · where · method · kit
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 (35).
Hatches & runs
What's on, when
Twelve months at a glance
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Large Dark OliveHatch
1
2
2
1
March BrownHatch
1
2
1
Iron BlueHatch
1
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.
Today's fly · curated pack
Top pattern + the box
6 patterns from this venue's curated pack
Detail · next 12h
Water temperature & rain
The two readings most likely to move the verdict
Water temperature for brown trout
Cool — slow8°C est.ideal 10–16°C
0°14°28°
Evidence
Why today scores what it does
6 factors, signed
- Temperature6528% weight
- Flow6022% weight
- Clarity9518% weight
- Feeding Time4013% weight
- Pressure807% weight
- Prey Activity3512% weight
About this water
Upper Guadalquivir, end to end
Field guide · contributor-editedUpper Guadalquivir · about
What this water is
Background · character · contributors
About this water
Upper Guadalquivir · directions
How to get to the water
Directions
Upper Guadalquivir · permits
Licences, sorteo, the rules
Permits & access
Permit required — see local rules.
- Junta de Andalucía licence required
- Sierra de Cazorla natural park rules apply in addition to standard trout regulations.
Upper Guadalquivir
Terrain map
The headwaters of the Guadalquivir in the Sierra de Cazorla natural park — cold, clear limestone water with wild brown trout.
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 — slow8°C est.ideal 10–16°C
0°14°28°
Why this score · for brown trout
- Temperature6528% weight
- Flow6022% weight
- Clarity9518% weight
- Feeding Time4013% weight
- Pressure807% weight
- Prey Activity3512% weight
Conditions
Level
Dry recently
No gauge reading
Water temp
8.0°C
Estimated
Clarity
Clear
Air temp
8°C
Wind
NE 5 km/h
Calm
Pressure
1017 hPa
Rain · 48h
0.0 mm
No meaningful rain
Rain · ahead
7.4 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 (35).
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Large Dark OliveHatch
1
2
2
1
March BrownHatch
1
2
1
Iron BlueHatch
1
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.
Permits & access
Permit required — see local rules.
- Junta de Andalucía licence required
- Sierra de Cazorla natural park rules apply in addition to standard trout regulations.
Directions
About this water
The headwaters of the Guadalquivir in the Sierra de Cazorla natural park — cold, clear limestone water with wild brown trout. Entirely distinct from the lowland Guadalquivir where no game fishing occurs. No pike in this upper reach.
- Limestone
Other water nearby · 5
Booking & contacts