HydroBASINS lev08 watershed · #2080634940
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
265,2km²
Upstream area
2 841,8km²
Discharge
13,53m³/s
Mean elev.
645m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Arroyo de Viñuelas115 km²
- Bassin de Río Jarama36 km²
1 dept-equivalent regions (GADM L2)
- 265.5 km²100.0% of basin
8 intersecting protected areas
Cuencas de los ríos Jarama y Henares
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.68 km² overlap
Vegas, cuestas y páramos del sureste de Madrid
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.15 km² overlap
Regional Park
7.47 km² overlap
Estepas cerealistas de los ríos Jarama y Henares
IUCN Not ReportedSpecial Protection Area (Birds Directive)
6.65 km² overlap
Cortados y cantiles de los ríos Jarama y Manzanares
IUCN Not ReportedSpecial Protection Area (Birds Directive)
5.90 km² overlap
Regional Park
2.98 km² overlap
Cuenca del río Manzanares
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.86 km² overlap
Soto de Viñuelas
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.30 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 025 distinct species · 241 774 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 : 28 espèces reliées par 85 interactions GloBI sur 6 types (connectance 11.5%, filtre Serrano α=0.2). 11 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°
13,8°C
Annual rain
444mm
Moisture idx (CMI)
-0,59
Runoff
128mm/an
PET
1 094mm
AET
380mm
Mean slope
2,2°
Water table
329cm
Forest
0%
Crops
29%
Urban
83%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)