Rules at a glance
- Free fishing
- Fly only
Water temperature for Barbel
Ideal16°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
Mayflies- Blue-winged oliveMost likely#16–18 · DunDuns are up; a sherry spinner fall may follow.
- Anglers curse mayfliesAlso possibleLower confidenceNearest relative#20–22 · SpinnerGo tiny: 20-22 spent spinner, single fly, long tippet.
- Large dark oliveAlso possible#14–16 · EmergerDead-drift the emerger — it's sitting in the film.
- Ephemera vulgata (lake mayfly)Also possibleLower confidenceNearest relative#8–10–12 · NymphLarge lake/slow-river mayfly; burrows soft sediment.
Caddisflies
Caddisflies- Saddle-case CaddisMost likelyLower confidenceNearest relative#16–18 · AdultTiny blackish caddis; fast riffles, early summer.
- CapererAlso possibleLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
- Satin sedgeAlso possibleLower confidence#12–14 · Egg-layingSkitter it at dusk — this one's fished, not dead-drifted.
- Net-spinning caddis (S. Europe)Also possibleLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
Damselflies & dragonflies
Damselflies & dragonflies- Migrant HawkerMost likelyLower confidence#6–8 · NymphStrip a big hawker nymph erratically near cover.
- DamselfliesAlso possibleNearest relative#10–12 · NymphSlow-retrieve a damsel nymph along the weed edges.
Hatch timeline · todayPeak at 18h
12h(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 18h — 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.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 2 as a supporter.
Start free trial14-day free trial. Cancel anytime.
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
Fly box · Barbel
Top
14–16 · Nymph
Search the runs and pockets, dead-drift near the bottom.
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
Gallery · 2
Terrain map
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
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
Booking & contacts
Río Júcar (Tramo Medio)
Water temperature for Barbel
Ideal16°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
- Blue-winged oliveMost likely#16–18 · DunDuns are up; a sherry spinner fall may follow.
- Anglers curse mayfliesAlso possibleLower confidenceNearest relative#20–22 · SpinnerGo tiny: 20-22 spent spinner, single fly, long tippet.
- Large dark oliveAlso possible#14–16 · EmergerDead-drift the emerger — it's sitting in the film.
- Ephemera vulgata (lake mayfly)Also possibleLower confidenceNearest relative#8–10–12 · NymphLarge lake/slow-river mayfly; burrows soft sediment.
Caddisflies
- Saddle-case CaddisMost likelyLower confidenceNearest relative#16–18 · AdultTiny blackish caddis; fast riffles, early summer.
- CapererAlso possibleLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
- Satin sedgeAlso possibleLower confidence#12–14 · Egg-layingSkitter it at dusk — this one's fished, not dead-drifted.
- Net-spinning caddis (S. Europe)Also possibleLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
Damselflies & dragonflies
- Migrant HawkerMost likelyLower confidence#6–8 · NymphStrip a big hawker nymph erratically near cover.
- DamselfliesAlso possibleNearest relative#10–12 · NymphSlow-retrieve a damsel nymph along the weed edges.
Hatch timeline · todayPeak at 18h
12h(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 18h — 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.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 2 as a supporter.
Start free trial14-day free trial. Cancel anytime.
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
Fly box · Barbel
Top
14–16 · Nymph
Search the runs and pockets, dead-drift near the bottom.
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
Gallery · 2
Terrain map
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
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
Booking & contacts