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

Río Júcar (Tramo Medio)

Río Júcar en invierno

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 cooler stretches but increasingly a barbel and mixed coarse fishery as it crosses the La Mancha plateau.

Today · About as good as it gets
Greenwell's Spider
Forecast · Today
About as good as it gets
On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
75% projected
Today's fly
Greenwell's Spider
Greenwell's Spider
Conditions on the water · Today
Live gauge
Flow
Steady
3.7 m³/s
Water temp16.0°C
ClarityClear
Weather25°C
WindN 9 km/h
Pressure1020 hPa
Rain · recent0.0 mm
Rain · ahead8.9 mm

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

Water temperature for Barbel
Ideal
16°C est.ideal 16–24°C
0°14°28°
How to fish it · for Barbel
When
Spring and autumn once summer heat backs off
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
Excellent — conditions well-balanced, with water temperature particularly in your favour.
Likely species
Mayflies
Caddisflies
Damselflies & dragonflies
Hatch timeline · todayPeak at 6pm

12pm(now) — Reed Smut

Stage: On emergersApproach: Emerger or dryActivity: 89%
Also:Pale Watery58%Cinnamon Sedge57%Flying Ants57%
Peak emergence window10 food groups active

Peak activity at 6pm — Evening Sedge (Evening Sedge, Weather boost)

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 2 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
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
Barbel fly box
WN
weighted nymphsTop
14–16 · Nymph
Search the runs and pockets, dead-drift near the bottom.
ST
streamers
8–10 · Streamer
Strip it for fish chasing fry or in coloured water.
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
About this water

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 cooler stretches but increasingly a barbel and mixed coarse fishery as it crosses the La Mancha plateau. Slower pools and longer glides than the headwaters.

  • Limestone
The full read · show the working · for Barbel · confidence 90%
How the 85 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time70 × 13%9.1
Pressure75 × 7%5.3
Insect activity79 × 12%9.5
Conditions total= 85
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
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