Freestone · Granite · Castilla y León / Ávila (Sierra de Gredos)

Río Tormes (upper — Sierra de Gredos)

The Río Tormes flowing through El Barco de Ávila in the lower upper-valley reach.
Contributor photo

Río Tormes at El Barco de Ávila

Jl FilpoC - CC BY 4.0

The upper Tormes rises on the northern slopes of the Sierra de Gredos — high-altitude granitic mountain water, cold and clear, dropping through pocket water, tight runs, and pools fringed with broom and pine.

Marginal · Brown Trout
Klinkhammer · 14-18
Marginallive now
Slow going — pick your moments
River temperature is the limiting factor today, not the flow. Fish dawn or dusk if you go at all, and handle everything with extra care.
80% confidence
What moved it
  • Level0.30 mLast reading 15h ago
  • Water temp20.2°C
  • ClarityClear
Today’s fly
Klinkhammer
Klinkhammer14-18
Proven pattern for this period
Conditions on the water
Live gauge
Level
Steady
0.30 m
Last reading 15h ago
Water temp20.2°C
ClarityClear
Weather23°C
WindS 18 km/h
Pressure1019 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
20°C est.ideal 10–16°C
0°14°28°
How to fish it · for brown trout
When
Through the open trout season once snowmelt drops — late spring through the close. Sierra de Gredos altitude means the Tormes upper fishes later than the lower river.
Where
High-altitude Gredos pocket water through the Tormes headwaters. Pool tails and the seams behind boulders; the river is small intimate water.
Method
Short upstream dry-dropper to wild fish; nymph the deeper pockets between hatches. The Gredos water is clear and demanding — short casts, careful approach.
Kit
8'6 ft #3 to 9 ft #4 — small mountain stream. Floating line, 9 to 12 ft leader to 4 lb fluoro. Studded boots.
Why this works
⚠️ Water at 20.2°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise poor — water clarity is in the right range.
Hatch timeline · todayPeak at 5pm

Hatch predictions

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Sub-surface · on the nymphunder the surface

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Beyond the hatch · worth watchingambient prey

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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.
  • Se requiere licencia autonómica de pesca de Castilla y León
  • Coto de Zapardiel: sin muerte (captura y suelta), solo anzuelos simples sin muerte
  • Los permisos se asignan anualmente — solicítalos a través del portal de la Junta
  • Las aguas de trucha de libre acceso son generalmente sin muerte
  • La temporada se abre el 21 de marzo; verifica cada año las fechas exactas del tramo.
What's coming
Plan ahead
5-day outlook
Water here around 20°C. Nothing cooler within range — carry a thermometer.
Gallery · 6
  1. The Río Tormes at La Angostura de Tormes showing the granite rounded-stone riverbed.
    Río Tormes at La Angostura
  2. The Río Tormes and Prado del Toro meadow at Navalperal de Tormes, entrance to the Gredos park.
    Río Tormes at Navalperal de Tormes
  3. The Río Tormes flowing through Navacepeda de Tormes, Ávila, below the Gredos massif.
    Río Tormes at Navacepeda
  4. The Tormes river route through the valley at Navarredonda de Gredos.
    Río Tormes at Navarredonda de Gredos
  5. The Río Tormes flowing through El Barco de Ávila in the lower upper-valley reach.
    Río Tormes at El Barco de Ávila
  6. Terrain map of the venue
    Terrain map
About this water

The upper Tormes rises on the northern slopes of the Sierra de Gredos — high-altitude granitic mountain water, cold and clear, dropping through pocket water, tight runs, and pools fringed with broom and pine. The centrepiece is the Coto de Zapardiel de la Ribera, a sin muerte beat from Puente de Navalperal de Tormes to the Garganta del Hornillo confluence. Wild brown trout of native Iberian lineage are maintained by the Centro Ictiogénico de Aliseda de Tormes, preserving Alto Tormes and Tiétar genetic populations. This is the Tormes that most trout anglers picture first: Puente del Congosto and El Barco de Ávila are the practical access hubs.

  • Granite
The full read · show the working · for brown trout · confidence 80%
How the 26 is built — score × weight = contribution
Temperature23 × 28%6.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity64 × 12%7.7
Limiting factor: Water temperature (20.2°C) is outside Brown Trout's preferred range (10–16°C)= 62
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