Limestone · Limestone Karst · Granada, ES

Río Castril

Clear mountain water of the Río Castril near the traditional irrigation channels, Sierra de Castril.

Crystal-clear limestone spring creek in the Cazorla-Segura-Las Villas Natural Park; superb wild brown trout; catch-and-release only.

Today · Closed season
Frenchie
Forecast · Today
Closed season
Out of season. Try elsewhere.
75% projected
Today's fly
Frenchie
Frenchie
Conditions on the water · Today
Proxy gauge
Level
Falling
Proxy
via Río Guardal
Water temp6.0°C
ClaritySlightly coloured
Weather12°C
WindN 22 km/h
Pressure1019 hPa
Rain · recent0.9 mm
Rain · ahead0.0 mm

No gauge on this water — conditions are inferred from Río Guardal. The trend transfers, the absolute level does not.

Water temperature for Brown Trout
Cool — slow
6°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
Gammarids
Hatch timeline · todayPeak at 12pm

12pm(now) — Autumn Olive

Stage: On emergersApproach: Emerger or dryActivity: 24%
Also:Autumn Needle Fly23%Black Midge22%

Peak activity at 12pm — Autumn Olive

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 4 guilds as a supporter.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 2 as a supporter.

Start free trial

14-day free trial. Cancel anytime.

Evidence
Survey-backed · regionalHigh confidence

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

Through the year
0–3 scale · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Brown SedgeHatch
2
3
3
3
2
Small SpurwingHatch
2
3
3
3
2
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Small Dark OliveHatch
2
3
3
3
2

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

Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
  • Junta de Andalucía licence plus trout surcharge required
  • Confirm the exact current coto status and any local method restrictions before travel.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Río Borosa
23 km
0
Brown trout
Guadalquivir (upper / Cazorla headwaters)
26 km
0
Brown trout · Rainbow trout
Río Zumeta
35 km
0
Brown trout
Río Segura (headwaters)
42 km
0
Brown trout · Rainbow trout
Guadalquivir (upper / Cazorla headwaters)
26 km
Brown trout · Rainbow trout
Gallery · 2
  1. Clear mountain water of the Río Castril near the traditional irrigation channels, Sierra de Castril.
    Río Castril
  2. Terrain map of the venue
    Terrain map
The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature35 × 28%9.8
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity43 × 12%5.2
Conditions total= 66
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Río Guardalproxy
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Warmer water — toward the 10–16 °C ideal band — would lift the temperature score.
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
At a glance

Río Castril is a limestone river in Granada — Cazorla, Spain. Its recorded elevation is about 809 m above sea level and the catchment geology is limestone karst. The species listed for this water is brown trout. Core methods listed: dry fly; nymph; careful low-water approach. Nearby waters in our listings include Río Borosa at 23 km, Guadalquivir (upper / Cazorla headwaters) at 26 km and Guadalquivir (upper / Cazorla headwaters) at 26 km.