HydroBASINS lev08 watershed · #2080579300
Bassin de Ríu Narcea
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 2 administrative regions : Asturias, León
Sub-basin area
1 862,1km²
Upstream area
1 862,3km²
Discharge
49,48m³/s
Mean elev.
873m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 1860.9 km²99.8% of basin
- 4.5 km²0.2% of basin
28 intersecting protected areas
Natural Park
417.25 km² overlap
Fuentes del Narcea, Degaña e Ibias
IUCN Not ReportedSite of Community Importance (Habitats Directive)
391.20 km² overlap
Fuentes del Narcea y del Ibias
IUCN Not ReportedSpecial Protection Area (Birds Directive)
390.47 km² overlap
Somiedo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
281.91 km² overlap
Somiedo
IUCN Not ReportedSpecial Protection Area (Birds Directive)
281.91 km² overlap
Somiedo
IUCN VINatural Park
281.91 km² overlap
Sierra de los Lagos
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
109.29 km² overlap
Peña Manteca-Genestaza
IUCN Not ReportedSite of Community Importance (Habitats Directive)
79.05 km² overlap
Ubiña-La Mesa
IUCN Not ReportedSpecial Protection Area (Birds Directive)
55.47 km² overlap
19 more protected areassorted by overlap area
Montovo-La Mesa
IUCN Not ReportedSite of Community Importance (Habitats Directive)
53.54 km² overlap
Muniellos
IUCN IaNature Reserve (Integral)
26.08 km² overlap
Muniellos
IUCN Not ReportedSpecial Protection Area (Birds Directive)
26.07 km² overlap
Muniellos
IUCN Not ReportedSite of Community Importance (Habitats Directive)
26.07 km² overlap
Conjunto Lacustre de Somiedo
IUCN IIINatural Monument
11.68 km² overlap
Río Narcea
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.27 km² overlap
Alto Sil
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.40 km² overlap
Alto Sil
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.40 km² overlap
Cuenca del Alto Narcea
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.05 km² overlap
Las Ubiñas-La Mesa
IUCN VINatural Park
2.53 km² overlap
Babia y Luna
IUCN VNatural Park
1.26 km² overlap
Valle de San Emiliano
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.26 km² overlap
Valle de San Emiliano
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.26 km² overlap
Río Pigüeña
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.51 km² overlap
Caldoveiro
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.42 km² overlap
Turbera de la Molina
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.35 km² overlap
Río Nalón
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.12 km² overlap
Tejo de Salas
IUCN IIINatural Monument
0.00 km² overlap
Carbayón de Valentín
IUCN IIINatural Monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 607 distinct species · 108 735 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Ríu Narcea : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 68 interactions GloBI sur 7 types (connectance 15.6%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
10,2°C
Annual rain
943mm
Moisture idx (CMI)
0,06
Runoff
753mm/an
PET
877mm
AET
654mm
Mean slope
20,0°
Water table
699cm
Forest
81%
Crops
5%
Urban
0%
Protected
37%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)