Spate · Granite · Castilla y León, ES

Río Negro (Zamora)

Río Negro (Zamora) terrain map

A Sanabria tributary of the Tera rising in the Sierra Segundera and joining the parent river near Rionegro del Puente.

Today · Closed season
Partridge & Orange
Forecast · Today
Closed season
Out of season. Plenty of other water available now.
75% projected
Today's fly
Partridge & Orange
Partridge & Orange
Conditions on the water · Today
Estimate
Level
Dry recently
No gauge reading
Water temp15.4°C
ClarityClear
Weather21°C
WindN 5 km/h
Pressure1022 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Water temperature for Brown Trout
Ideal
15°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.
Hatch timeline · todayPeak at 11am

12pm(now) — Reed Smut

Stage: On emergersApproach: Emerger or dryActivity: 95%
Also:Cinnamon Sedge59%Flying Ants55%Pale Watery49%
Peak emergence window9 food groups active

Peak activity at 11am — Reed Smut (Reed Smut, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds with Pro.

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Beyond the hatch · worth watchingambient prey(1)

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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2
Large StoneflyHatch
2
3
2
Olive UprightHatch
2
3
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
  • Parque Natural del Lago de Sanabria — verify protected-area rules in upper Sierra Segundera.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Órbigo
53 km
0
Brown trout
Río Cabrera
70 km
0
Brown trout
Tera
22 km
Brown trout
Río Aliste
22 km
Brown trout
Río Sil
76 km
Brown trout
About this water

A Sanabria tributary of the Tera rising in the Sierra Segundera and joining the parent river near Rionegro del Puente. Granite freestone water through the wooded Sanabria country, with classic mountain pool-riffle structure. Wild brown trout. Best fished from May through July; the upper Sierra Segundera reaches above Espadañedo hold up later.

  • Granite
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature76 × 28%21.3
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity62 × 12%7.4
Conditions total= 72
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout Last Sunday of March → 31 July
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts