HydroBASINS lev08 watershed · #2080020010
Bassin de Río Pas
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 : Burgos, Cantabria, Vizcaya
Sub-basin area
2 486,5km²
Upstream area
2 486,5km²
Discharge
0,31m³/s
Mean elev.
352m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 2090.8 km²83.9% of basin
- 327.2 km²13.1% of basin
- 15.7 km²0.6% of basin
30 intersecting protected areas
Montaña Oriental
IUCN VINatura 2000
216.97 km² overlap
Montaña oriental
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
216.97 km² overlap
Marismas de Santoña, Victoria y Joyel y Ría de Ajo
IUCN Not ReportedSpecial Protection Area (Birds Directive)
59.83 km² overlap
Marismas de Santoña, Victoria, Joyel y Ría de Ajo
IUCN Not AssignedNatura 2000
59.83 km² overlap
Natural Park
59.02 km² overlap
Collados del Asón
IUCN VNatural Park
45.94 km² overlap
Ordunte
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
42.37 km² overlap
Sierra del Escudo
IUCN Not AssignedNatura 2000
31.10 km² overlap
Sierra del Escudo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
31.10 km² overlap
21 more protected areassorted by overlap area
Armañón
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
30.06 km² overlap
Marismas de Santoña, Victoria y Joyel
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
29.22 km² overlap
Marismas de Santoña, Victoria y Joyel
IUCN Not AssignedNatura 2000
29.22 km² overlap
Armañón
IUCN VNatural Park
29.12 km² overlap
Marismas de Santoña
IUCN Not ReportedWetland of International Importance (Ramsar Site)
21.04 km² overlap
Natural Park
17.43 km² overlap
Río Pas
IUCN Not AssignedNatura 2000
9.58 km² overlap
Río Pas
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.58 km² overlap
Protected Landscape
6.92 km² overlap
Río Asón
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.31 km² overlap
Río Asón
IUCN Not AssignedNatura 2000
5.31 km² overlap
Dunas de Liencres y Estuario del Pas
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.21 km² overlap
Dunas de Liencres y Estuario del Pas
IUCN Not AssignedNatura 2000
5.21 km² overlap
Costa central y Ría de Ajo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.45 km² overlap
Costa Central y Ría de Ajo
IUCN VINatura 2000
4.45 km² overlap
Río Miera
IUCN Not AssignedNatura 2000
3.96 km² overlap
Río Miera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.96 km² overlap
Dunas del Puntal y Estuario del Miera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.53 km² overlap
Dunas del Puntal y Estuario del Miera
IUCN Not AssignedNatura 2000
3.53 km² overlap
Marine Protected Area (OSPAR)
3.13 km² overlap
Espacio marino de los Islotes de Portios-Isla Conejera-Isla de Mouro
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.12 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 530 distinct species · 698 428 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 Pas : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 65 interactions GloBI sur 2 types (connectance 12.3%, filtre Serrano α=0.2). 5 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°
12,5°C
Annual rain
1 049mm
Moisture idx (CMI)
0,26
Runoff
790mm/an
PET
769mm
AET
648mm
Mean slope
12,6°
Water table
451cm
Forest
85%
Crops
2%
Urban
9%
Protected
16%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)