Spate · Granite · Extremadura / Cáceres (Valle del Jerte, Sierra de Gredos)

Río Jerte & Valle del Jerte gargantas

Río Jerte venue image
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The Jerte rises on the Sierra de Gredos' northern slopes and flows west through the cherry-blossom Valle del Jerte.

Poor · Brown Trout
Perdigón · 14-18
Poorlive now
Not the day for it
River dropping into shape after a lift. Take your time — read the water before you cast.
80% confidence
What moved it
  • Level0.29 mDropping after lift
  • Water temp21.5°C
  • ClarityVery colouredColouring up
Today’s fly
Perdigón
Perdigón14-18
Proven pattern for this period
Conditions on the water
Live gauge
Level
Steady
0.29 m
Dropping after lift
Water temp21.5°C
ClarityVery coloured
Weather28°C
WindNW 10 km/h
Pressure1018 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 21.5°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise very poor — river flow is in the right range.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 3 active hatches hour by hour 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
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Yellow SallyHatch
2
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.
  • Extremadura fishing licence required
  • These trout no-kill stretches are artificial-only with a single barbless hook; exact tramo limits and category should be checked in the current regional order and annexes.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 2
Water here around 22°C — probably warm enough to stress brown trout. These are likely cooler.
Río Tormes (upper — Sierra de Gredos)
39 km
~18°C
Brown trout
Río Corneja system (research priority)
39 km
~18°C
Brown trout
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

The Jerte rises on the Sierra de Gredos' northern slopes and flows west through the cherry-blossom Valle del Jerte. Two sin muerte tramos on the main river: upper (Tornavacas, piscina natural to Puente Navarro) and middle (Jerte and Cabezuela del Valle). Four tributary gargantas also sin muerte: Garganta San Martín, Garganta Becedas (both Tornavacas), Garganta Nogaleda (Navaconcejo), Garganta de la Luz/Las Monjas (Cabezuela). All steep granitic mountain streams — pocket water, plunge pools, fast boulder runs. Wild browns under catch-and-release, barbless single hooks only. Season: 3rd Sunday March–31 July. Tight-line nymphing, small nymphs, tiny dries.

  • Granite
The full read · show the working · for brown trout · confidence 80%
How the 18 is built — score × weight = contribution
Temperature10 × 28%2.8
Flow80 × 22%17.6
Clarity15 × 18%2.7
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity44 × 12%5.3
Limiting factor: Water temperature (21.5°C) is outside Brown Trout's preferred range (10–16°C)= 43
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.
A drop and clear would lift the flow and clarity scores.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout3rd Sunday of March → 31 July
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts