Granite freestone river descending from the Sierra de Guadarrama into the Madrid plain. Upper reaches are cold, clear trout water. No pike in the trout-capable upper section.
- Granite
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
7.5°C
Estimated
Clarity
Clear
Air temp
9°C
Wind
NE 14 km/h
Gentle breeze
Pressure
1016 hPa
Rain · 48h
0.0 mm
No meaningful rain
Rain · ahead
2.0 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 (30).
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
3 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
- Temperature5728% weight
- Flow6022% weight
- Clarity9518% weight
- Feeding Time4013% weight
- Pressure807% weight
- Prey Activity3012% weight
About this water
Río Guadarrama, end to end
Field guide · contributor-editedRío Guadarrama · about
What this water is
Background · character · contributors
About this water
Río Guadarrama · directions
How to get to the water
Directions
Río Guadarrama · permits
Licences, sorteo, the rules
Permits & access
Permit required — see local rules.
- Comunidad de Madrid licence required
- Check annual order for tramo status.
Río Guadarrama
Terrain map
Granite freestone river descending from the Sierra de Guadarrama into the Madrid plain.
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
- Temperature5728% weight
- Flow6022% weight
- Clarity9518% weight
- Feeding Time4013% weight
- Pressure807% weight
- Prey Activity3012% weight
Conditions
Level
Dry recently
No gauge reading
Water temp
7.5°C
Estimated
Clarity
Clear
Air temp
9°C
Wind
NE 14 km/h
Gentle breeze
Pressure
1016 hPa
Rain · 48h
0.0 mm
No meaningful rain
Rain · ahead
2.0 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 (30).
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.
- Comunidad de Madrid licence required
- Check annual order for tramo status.
Directions
About this water
Granite freestone river descending from the Sierra de Guadarrama into the Madrid plain. Upper reaches are cold, clear trout water. No pike in the trout-capable upper section.
- Granite
Other water nearby · 5
Booking & contacts