Freestone · Limestone · Cuenca / Albacete, Castilla-La Mancha

Río Júcar (Tramo Medio)

Río Júcar en invierno
Poor · Barbel
Heavy Hare's Ear Nymph · Hook 8–10, heavily weighted
Poorlive now
Not the day for it
Low and clear — careful approach country. A morning for the obvious fish only.
55% confidence
What moved it
  • Flow4.3 m³/sLast reading 29 min ago
  • Water temp7.7°C
  • ClarityClear
Today's fly
Heavy Hare's Ear Nymph
Heavy Hare's Ear NymphHook 8–10, heavily weighted
in season · all-rounder
Conditions on the water
Live gauge
Flow
Steady
4.3 m³/s
Last reading 29 min ago
Water temp7.7°C
ClarityClear
Weather19°C
WindNW 17 km/h
Pressure1019 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Barbel
Cool — slow
8°C est.ideal 16–24°C
0°14°28°
How to fish it · for Barbel
When
La primavera y el otoño, una vez que remite el calor del verano
Where
The Júcar's middle reach downstream of the Alarcón reservoir, where the river widens and warms into transitional water — still holding some brown trout in its…
Why this works
Very poor — water clarity is working for you, but water temperature is the limiting factor today.
Likely species
Stoneflies
Gammarids
Molluscs
  • Pond snailsMost likelyLower confidence
    #10–12–14 · Adult
    Dead-drift or twitch a snail pattern near weed beds.
Oligochaetes
  • Aquatic wormsMost likelyLower confidence
    #12–14–16 · Adult
    Dead-drift a worm pattern deep - a year-round staple.
Hatch timeline · todayPeak at 10:00

Hatch predictions

Today's headline hatch shown — see all 5 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 5 guilds 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 · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1

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

Ranked for today
Fly box · Barbel
SC
Small Crayfish
Hook 6–10 · Fly
Barbel are significant predators of signal crayfish (Pacifastacus leniusculus) in English rivers, and invasive crayfish are present across much of Europe.
Permits & access
Permit required — see local rules.
  • Castilla-La Mancha fishing licence required
  • Any common trout caught must be released under the 2026 order.
What's coming
Plan ahead
5-day outlook
Other water nearby · 1
Río Cabriel
58 km
Brown trout
Gallery · 2
  1. Río Júcar en invierno
  2. Terrain map of the venue
    Terrain map
The full read · show the working · for Barbel · confidence 55%
How the 14 is built — score × weight = contribution
Temperature7 × 28%2.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time70 × 13%9.1
Pressure75 × 7%5.3
Insect activity52 × 12%6.2
Limiting factor: Water temperature (7.7°C) is outside Barbel's preferred range (16–24°C)= 56
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Warmer water — toward the 16–24 °C ideal band — would lift the temperature score.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 April → 30 September

    Castilla-La Mancha 2026 order, low-mountain band. This reach sits at the trout/coarse transition — treat any common trout as a bonus catch and release it; barbel is the more consistent target here.

Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts