HydroBASINS lev08 watershed · #2080640890
Bassin de Río Jarama
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 1 administrative regions : Madrid
Sub-basin area
167,6km²
Upstream area
8 748km²
Discharge
35,93m³/s
Mean elev.
580m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Manzanares1245 km²
- Bassin de Arroyo de Pantueña404 km²
1 dept-equivalent regions (GADM L2)
- 167.7 km²100.0% of basin
3 intersecting protected areas
Vegas, cuestas y páramos del sureste de Madrid
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
136.59 km² overlap
Regional Park
136.05 km² overlap
Cortados y cantiles de los ríos Jarama y Manzanares
IUCN Not ReportedSpecial Protection Area (Birds Directive)
131.86 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 609 distinct species · 309 015 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Jarama : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 40 interactions GloBI sur 2 types (connectance 8.6%, filtre Serrano α=0.2). 6 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°
14,3°C
Annual rain
427mm
Moisture idx (CMI)
-0,62
Runoff
84mm/an
PET
1 132mm
AET
365mm
Mean slope
2,9°
Water table
270cm
Forest
5%
Crops
40%
Urban
15%
Protected
81%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)