Freestone · Granite · Castilla y León / Ávila (upper Tiétar headwaters)

Río Tiétar

Río Tiétar — Río Tiétar desde AV-920
Contributor photo

Río Tiétar desde AV-920

Totemkin (https://commons.wikimedia.org/wiki/User:Totemkin) - CC BY-SA

The Tiétar is a western Gredos granite freestone draining toward the Tagus.

Poor · Brown Trout
Klinkhammer · 14-18
Poorlive now
Not the day for it
River temperature is the limiting factor today, not the flow. This is not the day to push it. Check the thermal advice above before you head out.
90% confidence
What moved it
  • Level0.32 m
  • Water temp22.0°C
  • ClarityClear
Today’s fly
Klinkhammer
Klinkhammer14-18
Proven pattern for this period
Conditions on the water
Live gauge
Level
Steady
0.32 m
Water temp22.0°C
ClarityClear
Weather22°C
WindNW 7 km/h
Pressure1017 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for brown trout
Warm — slow
22°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.
Why this works
⛔ Water at 22°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Hatch timeline · todayPeak at 6pm

Hatch predictions

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Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

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Evidence
Records-basedModerate confidence

Based on species-occurrence records, not local invertebrate surveys.

Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1
GrannomHatch
1
1

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.
  • Castilla y León fishing licence required on the Ávila side
  • Check the exact upper Tiétar tramo in the official visor, especially because downstream administration and rules differ once the river leaves the province.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 1
Probably above the brown trout safety line — these are likely cooler, but carry a thermometer.
Río Corneja system (research priority)
39 km
~17°C
Brown trout
Gallery · 2
  1. Río Tiétar — Río Tiétar desde AV-920
    Río Tiétar desde AV-920
  2. Terrain map of the venue
    Terrain map
About this water

The Tiétar is a western Gredos granite freestone draining toward the Tagus. This covers the upper Ávila / Gredos stretch, not the river's full course further downstream. Cold, clear mountain water, pocket water, and pool-and-run structure support wild browns of real Iberian genetic importance, connected to the wider Gredos conservation story.

  • Granite
The full read · show the working · for brown trout · confidence 90%
How the 12 is built — score × weight = contribution
Temperature6 × 28%1.7
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time45 × 13%5.9
Pressure80 × 7%5.6
Insect activity49 × 12%5.9
Limiting factor: Water temperature (22°C) is outside Brown Trout's preferred range (10–16°C)= 54
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout21 March → 31 July
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts