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

Río Corneja system (research priority)

Río Corneja system (research priority) — Río Corneja. Tramo medio a su paso por La Ribera

A Tormes tributary in the Corneja valley noted for outstanding trout genetics.

Today · Closed season
Pheasant Tail Nymph
Forecast · Today
Closed season
Out of season. Try elsewhere.
50% projected
Today's fly
Pheasant Tail Nymph
Pheasant Tail Nymph
Conditions on the water · Today
Proxy gauge
Level
Falling
Proxy
via Río Tormes (upper — Sierra de Gredos)
Water temp3.9°C
ClarityClearing
Weather9°C
WindN 13 km/h
Pressure1015 hPa
Rain · recent5.0 mm
Rain · ahead0.9 mm

No gauge on this water — conditions are inferred from Río Tormes (upper — Sierra de Gredos). The trend transfers, the absolute level does not.

Water temperature for Brown Trout
Cool — slow
4°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Through the Castilla y León trout season. The Corneja is small intimate Sierra de Gredos water — fishes well once snowmelt drops.
Where
Pool tails and pocket water through the Corneja system. Small-river scale; read each lie carefully.
Method
Short upstream dry-dropper; nymph the deeper pockets. The Corneja is research-priority water — careful approach, light tackle, fish each lie before moving.
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.
Hatch timeline · todayQuiet day

Low insect activity predicted today

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 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
1
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1
Brown SedgeHatch
1
2
2
2
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.
  • Castilla y León licence required
  • Exact tramos and coto status need confirming from pescacastillayleon.es — this is a research-priority entry
  • Sin muerte likely on free-access sections.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Zapardiel de la Ribera
6.0 km
0
Brown trout
Río Tormes (upper — Sierra de Gredos)
12 km
0
Brown trout
Río Tiétar
39 km
0
Brown trout
Embalse de Santa Teresa
26 km
Barbel · Carp · Pike
Río Tormes (Santa Teresa trout beats — Salamanca)
30 km
Brown trout · Barbel
Gallery · 2
  1. Río Corneja system (research priority) — Río Corneja. Tramo medio a su paso por La Ribera
    Río Corneja. Tramo medio a su paso por La Ribera
  2. Terrain map of the venue
    Terrain map
About this water

This stream has a strong wild-trout reputation but exact tramos and cotos require official confirmation from pescacastillayleon.es before complete mapping. Likely character: clear mountain tributary with smaller pools and runs suited to dry fly and nymphing on lighter tackle. Clear mountain water in a scenic valley.

  • Granite
The full read · show the working · for Brown Trout · confidence 55%
How the 0 is built — score × weight = contribution
Temperature12 × 28%3.4
Flow40 × 22%8.8
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity17 × 12%2.0
Limiting factor: Water temperature (3.9°C) is outside Brown Trout's preferred range (10–16°C)= 47
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Río Tormes (upper — Sierra de Gredos)proxy
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Warmer water — toward the 10–16 °C ideal band — would lift the temperature score.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 21 March → 31 July
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts
At a glance

Río Corneja system (research priority) is a freestone river in Castilla y León / Ávila (Sierra de Gredos), Spain. Its recorded elevation is about 1,181 m above sea level and the catchment geology is granite. The river is described as roughly 30 km long. The species listed for this water is brown trout. The trout season is recorded as running from 21 March to 31 July. Best window recorded for anglers: May–July (best); April (early season if snowmelt allows). Core methods listed: Short-line nymphing; Upstream dry fly; Sight nymphing (clear pools). Nearby waters in our listings include Zapardiel de la Ribera at 6.0 km, Río Tormes (upper — Sierra de Gredos) at 12 km and Embalse de Santa Teresa at 26 km.