Freestone · Mixed · Castilla y León

Rivera de Valdavia

Rivera de Valdavia terrain map
Terrain map

A Pisuerga tributary running through the Valdavia country between Ventanilla and Ruesga.

Poor · Brown Trout
Klinkhammer · 14-18
Poorlive now
Not the day for it
River temperature is the limiting factor today, not the flow. This is not the day to push it. Check the thermal advice above before you head out.
90% confidence
What moved it
  • Level0.13 mLast reading 14h ago
  • Water temp22.3°C
  • ClarityClear
Today’s fly
Klinkhammer
Klinkhammer14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.13 m
Last reading 14h ago
Water temp22.3°C
ClarityClear
Weather26°C
WindS 17 km/h
Pressure1016 hPa
Rain · recent0.0 mm
Rain · ahead6.9 mm

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

Water temperature for brown trout
Warm — slow
22°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
⛔ Water at 22.3°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Hatch timeline · todayQuiet day

Hatch predictions

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Sub-surface · on the nymphunder the surface

Hatch predictions

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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
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

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
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
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.
  • Se requiere licencia de Castilla y León
  • Comprueba el visor de pesca de la JCyL para las normas de tramo entre Ventanilla y Ruesga.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 3
Probably above the brown trout safety line — these are likely cooler, but carry a thermometer.
Río Carrión
16 km
~14°C
Brown trout
Río Camesa
22 km
~15°C
Brown trout
Upper Río Pisuerga
14 km
~17°C
Brown trout
About this water

A Pisuerga tributary running through the Valdavia country between Ventanilla and Ruesga. Mixed geology, generally lower-gradient than the Picos-flank Pisuerga headwaters, with classic pool-riffle structure through wooded country. Wild brown trout throughout. Best fished from late April through June in the middle reaches; the river warms quickly in summer and is best left until autumn no-kill stretches reopen.

  • Mixed
The full read · show the working · for brown trout · confidence 90%
How the 10 is built — score × weight = contribution
Temperature5 × 28%1.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity61 × 12%7.3
Limiting factor: Water temperature (22.3°C) is outside Brown Trout's preferred range (10–16°C)= 57
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • TroutLast Sunday of March → 31 July
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts