Spate · Limestone · Castilla y León

Río Castillería

Río Castillería terrain map
Terrain map

A Pisuerga headwater rising in the Montaña Palentina around Vañes.

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.
75% confidence
What moved it
  • Level0.09 m
  • Water temp14.3°C
  • ClarityClear
Today’s fly
Klinkhammer
Klinkhammer14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.09 m
Water temp14.3°C
ClarityClear
Weather15°C
WindN 6 km/h
Pressure1019 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
Ideal
14°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 temperature is working for you, but time of day is the limiting factor today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 7 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

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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.
  • Se requiere licencia de Castilla y León
  • Montaña Palentina — comprueba las normas del parque natural Fuentes Carrionas.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Rivera de Valdavia
5.0 km
Brown trout
Upper Río Pisuerga
9.0 km
74
Brown trout
Río Carrión
16 km
80
Brown trout
Río Camesa
17 km
80
Brown trout
Embalse de Camporredondo
23 km
Brown trout
About this water

A Pisuerga headwater rising in the Montaña Palentina around Vañes. The Castillería is alpine limestone trout water — gin-clear pools, broken bedrock, partial canopy of beech and hazel. Wild brown trout only. Short catchment, fast response. Best fished from late May through July in the middle reaches; the very upper meadows hold up into August.

  • Limestone
The full read · show the working · for brown trout · confidence 75%
How the 80 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity52 × 12%6.2
Conditions total= 80
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
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