HydroBASINS lev08 watershed · #2080019820
Bassin de Ríu Nalón
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 1 administrative regions : Asturias
Sub-basin area
135,1km²
Upstream area
4 905,7km²
Discharge
126,17m³/s
Mean elev.
258m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Ríu Narcea1862 km²
- Bassin de Río Cubia389 km²
1 dept-equivalent regions (GADM L2)
- 134.0 km²99.1% of basin
3 intersecting protected areas
Cabo Busto-Luanco
IUCN Not ReportedSpecial Protection Area (Birds Directive)
5.73 km² overlap
Cabo Busto-Luanco
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.73 km² overlap
Río Nalón
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.32 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 213 distinct species · 23 716 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Nalón : 35 espèces reliées par 77 interactions GloBI sur 6 types (connectance 9.4%, filtre Serrano α=0.2). 6 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°
12,9°C
Annual rain
876mm
Moisture idx (CMI)
-0,01
Runoff
763mm/an
PET
882mm
AET
664mm
Mean slope
13,2°
Water table
467cm
Forest
93%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)