HydroBASINS lev08 watershed · #2080019950
Bassin de Río Nansa
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 3 administrative regions : Asturias, Cantabria, Palencia
Sub-basin area
691,7km²
Upstream area
691,7km²
Discharge
0,12m³/s
Mean elev.
511m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 665.8 km²96.1% of basin
- 12.3 km²1.8% of basin
- 0.1 km²0.0% of basin
29 intersecting protected areas
Valles altos del Nansa y Saja y Alto Campoo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
149.49 km² overlap
Valles altos del Nansa y Saja y Alto Campoo
IUCN Not AssignedNatura 2000
149.49 km² overlap
Natura 2000
74.79 km² overlap
Sierra del Cordel y cabeceras del Nansa y del Saja
IUCN Not ReportedSpecial Protection Area (Birds Directive)
74.79 km² overlap
Oyambre
IUCN VNatural Park
57.86 km² overlap
Sierra de Peña Sagra
IUCN Not AssignedNatura 2000
41.54 km² overlap
Sierra de Peña Sagra
IUCN Not ReportedSpecial Protection Area (Birds Directive)
41.54 km² overlap
Natura 2000
12.71 km² overlap
Rias occidentales y Duna de Oyambre
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
12.71 km² overlap
20 more protected areassorted by overlap area
Sierra del Escudo de Cabuérniga
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.87 km² overlap
Sierra del Escudo de Cabuérniga
IUCN Not AssignedNatura 2000
7.87 km² overlap
Río Nansa
IUCN Not AssignedNatura 2000
5.70 km² overlap
Río Nansa
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.70 km² overlap
Cueva del Rejo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.80 km² overlap
Cueva del Rejo
IUCN Not AssignedNatura 2000
1.80 km² overlap
Saja-Besaya
IUCN VNatural Park
1.52 km² overlap
Cueva La Rogería
IUCN Not AssignedNatura 2000
1.10 km² overlap
Cueva La Rogería
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.10 km² overlap
Liébana
IUCN Not AssignedNatura 2000
0.64 km² overlap
Liébana
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.64 km² overlap
Desfiladero de la Hermida
IUCN Not AssignedNatura 2000
0.45 km² overlap
Desfiladero de la Hermida
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.20 km² overlap
Fuentes Carrionas y Fuente Cobre-Montaña Palentina
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.10 km² overlap
Fuentes Carrionas y Fuente Cobre-Montaña Palentina
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.10 km² overlap
Montaña Palentina
IUCN VNatural Park
0.05 km² overlap
Ría de Ribadesella-Ría de Tinamayor
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.01 km² overlap
Ría de Ribadesella-Ría de Tinamayor
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.01 km² overlap
Río Deva
IUCN VINatura 2000
0.00 km² overlap
Rio Deva
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 912 distinct species · 56 808 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Río Nansa : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 89 interactions GloBI sur 3 types (connectance 16.9%, filtre Serrano α=0.2). 7 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°
11,9°C
Annual rain
898mm
Moisture idx (CMI)
0,09
Runoff
758mm/an
PET
816mm
AET
641mm
Mean slope
14,0°
Water table
470cm
Forest
91%
Crops
1%
Urban
0%
Protected
33%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)