HydroBASINS lev08 watershed · #2080644930
Bassin de Río Tajo
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 : Madrid, Toledo
Sub-basin area
716,7km²
Upstream area
21 632,2km²
Discharge
65,92m³/s
Mean elev.
583m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Tajo1749 km²
- Bassin de Río Jarama162 km²
2 dept-equivalent regions (GADM L2)
- 517.7 km²72.2% of basin
- 199.8 km²27.8% of basin
6 intersecting protected areas
Vegas, cuestas y páramos del sureste de Madrid
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
72.35 km² overlap
Carrizales y sotos de Aranjuez
IUCN Not ReportedSpecial Protection Area (Birds Directive)
71.68 km² overlap
Yesares del valle del Tajo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
16.74 km² overlap
Carrizales y sotos del Jarama y Tajo
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.18 km² overlap
Estepas salinas de Toledo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.02 km² overlap
Salobral de Ocaña
IUCN IVMicroreserve
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 057 distinct species · 44 887 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 Tajo : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 55 interactions GloBI sur 4 types (connectance 11.8%, 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°
14,4°C
Annual rain
414mm
Moisture idx (CMI)
-0,64
Runoff
76mm/an
PET
1 147mm
AET
354mm
Mean slope
1,9°
Water table
251cm
Forest
0%
Crops
63%
Urban
19%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)