HydroBASINS lev08 watershed · #2080601610
Bassin de Río Arlanza
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 : Burgos, Palencia
Sub-basin area
946,6km²
Upstream area
1 834,6km²
Discharge
13,21m³/s
Mean elev.
1 004m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Arlanza586 km²
- Bassin de Río Pedroso302 km²
2 dept-equivalent regions (GADM L2)
- 942.3 km²99.4% of basin
- 5.8 km²0.6% of basin
6 intersecting protected areas
Natural Park
251.11 km² overlap
Sabinares del Arlanza - ZEPA
IUCN Not ReportedSpecial Protection Area (Birds Directive)
250.65 km² overlap
Sabinares del Arlanza
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
243.34 km² overlap
Sierra de la Demanda
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
71.09 km² overlap
Riberas del Río Arlanza y afluentes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.55 km² overlap
Sierra de la Demanda - ZEPA
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.41 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 530 distinct species · 80 380 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Arlanza : 22 espèces reliées par 89 interactions GloBI sur 3 types (connectance 15.0%, filtre Serrano α=0.2). 13 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
553mm
Moisture idx (CMI)
-0,42
Runoff
197mm/an
PET
952mm
AET
471mm
Mean slope
5,2°
Water table
317cm
Forest
37%
Crops
37%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)