HydroBASINS lev08 watershed · #2080644500
Bassin de Río Alberche
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 : Madrid, Toledo, Ávila
Sub-basin area
619,5km²
Upstream area
4 141,8km²
Discharge
19,24m³/s
Mean elev.
521m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Alberche714 km²
- Bassin de Arroyo Grande216 km²
3 dept-equivalent regions (GADM L2)
- 613.6 km²98.9% of basin
- 6.3 km²1.0% of basin
- 0.3 km²0.1% of basin
7 intersecting protected areas
Sierra de San Vicente y valles del Tiétar y Alberche
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
142.91 km² overlap
Sierra de San Vicente y valles del Tiétar y Alberche
IUCN Not ReportedSpecial Protection Area (Birds Directive)
142.91 km² overlap
Encinares del río Alberche y río Cofio
IUCN Not ReportedSpecial Protection Area (Birds Directive)
6.36 km² overlap
Cuencas de los ríos Alberche y Cofio
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.36 km² overlap
Sotos del río Alberche
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.03 km² overlap
Valle del Tiétar - ZEPA
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.28 km² overlap
Valle del Tiétar
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.28 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 873 distinct species · 46 396 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Alberche : 32 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 90 interactions GloBI sur 4 types (connectance 11.5%, filtre Serrano α=0.2). 8 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°
14,6°C
Annual rain
369mm
Moisture idx (CMI)
-0,68
Runoff
135mm/an
PET
1 169mm
AET
317mm
Mean slope
3,5°
Water table
541cm
Forest
21%
Crops
48%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)