HydroBASINS lev08 watershed · #2080626110
Bassin de Río Lozoya
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 : Guadalajara, Madrid
Sub-basin area
308,5km²
Upstream area
967,8km²
Discharge
4,53m³/s
Mean elev.
1 084m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Lozoya495 km²
- Bassin de Río Madarquillos165 km²
2 dept-equivalent regions (GADM L2)
- 275.7 km²89.2% of basin
- 33.2 km²10.8% of basin
5 intersecting protected areas
Cuenca del río Lozoya y Sierra Norte
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
109.97 km² overlap
Sierra Norte de Guadalajara
IUCN VINatural Park
32.03 km² overlap
Sierra de Ayllón
IUCN Not ReportedSpecial Protection Area (Birds Directive)
22.13 km² overlap
Sierra de Ayllón
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
22.13 km² overlap
Cuencas de los ríos Jarama y Henares
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.68 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 904 distinct species · 37 304 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 Lozoya : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 94 interactions GloBI sur 6 types (connectance 12.7%, filtre Serrano α=0.2). 13 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°
10,8°C
Annual rain
507mm
Moisture idx (CMI)
-0,49
Runoff
141mm/an
PET
989mm
AET
433mm
Mean slope
10,3°
Water table
729cm
Forest
70%
Crops
5%
Urban
0%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)