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.

Poor · Brown Trout
Woolly Bugger · 10-12
Closed season
Out of season. Try elsewhere.
Closed — confidence not applicable today.
What moved it
  • LevelProxyvia Río Guardal
  • Water temp10.7°C
  • ClarityClear
Today's fly
Woolly Bugger
Woolly Bugger10-12
Proven pattern for this period
Conditions on the water
Proxy gauge
Level
Steady
Proxy
via Río Guardal
Water temp10.7°C
ClarityClear
Weather22°C
WindSE 13 km/h
Pressure1020 hPa
Rain · recent3.4 mm
Rain · ahead1.3 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
Ideal
11°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
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 12 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 4 as a supporter.

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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 · September 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
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
About this water

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

  • Limestone karst
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity68 × 12%8.2
Conditions total= 85
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Río Guardalproxy
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Trout durante los periodos hábiles (check current BOJA) → during the designated open period
Related guides
Booking & contacts