Spate · Slate · Asturias, Spain

Río Negro

Río Negro fishing venue photo
Good · Brown Trout
Small Chironomid · 22-24
Goodlive now
A proper day on the water
River steady at a fishable height. A proper day for it. Work the seams with an upstream nymph, switch to the dry when they show.
75% confidence
What moved it
  • Level0.48 mLast reading 2h ago
  • Water temp13.4°C
  • ClarityClear
Today's fly
SC
Small Chironomid22-24
Upstream dry, on top
Conditions on the water
Live gauge
Level
Steady
0.48 m
lowspate
Water temp13.4°C
ClarityClear
Weather15°C
WindSW 7 km/h
Pressure1025 hPa
Rain · recent0.0 mm
Rain · ahead0.7 mm

The nearest gauge is at Luarca. It doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Ideal
13°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
Good — water temperature is working for you, but insect activity is the limiting factor today.
Likely species
Gammarids
Hatch timeline · todayPeak at 06:00

Hatch predictions

Today's headline hatch shown — see all 8 active hatches hour by hour 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 · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
March BrownHatch
2
3
2
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2
Large StoneflyHatch
2
3
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Fly box · Brown Trout
SC
Small ChironomidTop
22-24 · Pattern
Upstream dry, on top
Beats · 1
Luarca · 1.1 kmC&R trout
C&R trout stretch — Polideportivo de Luarca to Frente a los Alsas, rampa al río.
Beat detail
Daily permit required, all fish returned
Upstream: Polideportivo de Luarca
Downstream: Frente a los Alsas, rampa al río
Luarca beat map
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
  • Se requiere licencia de pesca asturiana
  • En 2026 muchas aguas trucheras llegan hasta el 15 de agosto, pero las zonas de salmón, las zonas de montaña, los tramos sin muerte y los tramos fronterizos pueden variar
  • Comprueba las normas locales del coto y del tramo antes de pescar.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Río Navelgas
5.0 km
76
Brown trout
Río Esva (Canero system)
12 km
71
Brown trout · Sea trout · Salmon
El Arenero (Coto Intensivo, Tineo)
12 km
Brown trout · Rainbow trout
Río Navia
17 km
Brown trout · Sea trout
Río Porcía
26 km
Brown trout · Sea trout
Gallery · 3
  1. In the heart of Luarca
    In the heart of Luarca
  2. In the heart of Luarca
    In the heart of Luarca
  3. Terrain map of the venue
    Terrain map
Water quality (WFD)
  • Ecology: Good
  • Chemical: Good
What this classification means

WFD re-coded 2026-06-18: prior id ES018MSPFES197MAR001750 actually identifies the Navelgas/Bárcena — this river was mis-tagged to a neighbouring water body. Re-mapped to ES018MSPFES159MAR001190. Status: EEA WISE 2022 (3rd RBMP). Confidence: medium — VERIFY Negro River I (001190) vs II (001800). Source: discodata.eea.europa.eu.

WFD classification · ES018MSPFES159MAR001190

The full read · show the working · for Brown Trout · confidence 75%
How the 71 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow40 × 22%8.8
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity37 × 12%4.4
Conditions total= 71
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

Sea trout: Variable seasonal (2026)

Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts