HydroBASINS lev08 watershed · #2080646210
Bassin de Río Guadarrama
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 4 administrative regions : Madrid, Segovia, Toledo, Ávila
Sub-basin area
1 711,2km²
Upstream area
1 711,2km²
Discharge
5,6m³/s
Mean elev.
724m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 992.7 km²57.9% of basin
- 716.9 km²41.8% of basin
- 2.0 km²0.1% of basin
- 1.5 km²0.1% of basin
15 intersecting protected areas
Cuenca del río Guadarrama
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
336.64 km² overlap
Regional Park
226.73 km² overlap
Área esteparia de la margen derecha del río Guadarrama
IUCN Not ReportedSpecial Protection Area (Birds Directive)
86.20 km² overlap
Regional Park
52.89 km² overlap
Cuenca del río Manzanares
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
47.64 km² overlap
Nature Place (picturesque)
15.39 km² overlap
Sierra de Guadarrama
IUCN IINacional Park
15.31 km² overlap
Encinares del río Alberche y río Cofio
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.90 km² overlap
Cuencas de los ríos Alberche y Cofio
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.48 km² overlap
6 more protected areassorted by overlap area
Natural Park
2.05 km² overlap
Sierra de Guadarrama
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.89 km² overlap
Sierra de Guadarrama - ZEPA
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.89 km² overlap
Campo Azálvaro - Pinares de Peguerinos
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.63 km² overlap
Campo Azálvaro - Pinares de Peguerinos - ZEPA
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.63 km² overlap
Natural Monument (National Interest)
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 509 distinct species · 526 084 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Guadarrama : 26 espèces reliées par 70 interactions GloBI sur 4 types (connectance 11.8%, filtre Serrano α=0.2). 9 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°
13,4°C
Annual rain
426mm
Moisture idx (CMI)
-0,61
Runoff
102mm/an
PET
1 094mm
AET
365mm
Mean slope
3,3°
Water table
427cm
Forest
16%
Crops
42%
Urban
23%
Protected
18%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)