Spate · Limestone · Castilla y León

Río Yuso

Río Yuso terrain map
Terrain map

A short alpine Esla tributary joining the parent river at Boca de Huérgano.

Prime · Brown Trout
Klinkhammer · 14-18
Primelive now
About as good as it gets
Low and clear — careful approach country. Take your time — read the water before you cast.
90% confidence
What moved it
  • Level0.39 mLast reading 20h ago
  • Water temp16.6°C
  • ClarityClear
Today’s fly
Klinkhammer
Klinkhammer14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.39 m
Last reading 20h ago
Water temp16.6°C
ClarityClear
Weather19°C
WindS 8 km/h
Pressure1019 hPa
Rain · recent0.0 mm
Rain · ahead2.9 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for brown trout
Warm — slow
17°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
Excellent — water clarity is right today, though insect activity could be better.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 6 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 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.
  • Castilla y León licence required
  • Verify any high-mountain tramo or protected-area rules before fishing.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Río Cardaño
7.0 km
79
Brown trout
Embalse de Riaño
7.0 km
Brown trout
Río Orza
11 km
79
Brown trout
Embalse de Camporredondo
15 km
Brown trout
Río Remolina
16 km
Brown trout
About this water

A short alpine Esla tributary joining the parent river at Boca de Huérgano. The Yuso drains limestone country south of Riaño and gives the upper Esla system one of its best-known wild brown trout reaches. Pool-and-riffle structure on the middle stretches around Besande; pocket water higher up. Best fished from late May through July, after the snowmelt freshet has dropped back.

  • Limestone
The full read · show the working · for brown trout · confidence 90%
How the 81 is built — score × weight = contribution
Temperature86 × 28%24.1
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time75 × 13%9.8
Pressure80 × 7%5.6
Insect activity57 × 12%6.8
Conditions total= 81
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
Directions
Apple MapsGoogle Maps
Seasons & zones
  • TroutLast Sunday of March → 31 July
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts