HydroBASINS lev08 watershed · #2080617630
Bassin de Río Adaja
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 3 administrative regions : Segovia, Valladolid, Ávila
Sub-basin area
206,6km²
Upstream area
2 091,7km²
Discharge
5,67m³/s
Mean elev.
832m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Arevalillo588 km²
- Bassin de Río Adaja570 km²
3 dept-equivalent regions (GADM L2)
- 111.6 km²54.0% of basin
- 54.6 km²26.4% of basin
- 40.7 km²19.7% of basin
3 intersecting protected areas
Tierra de Campiñas
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.92 km² overlap
Riberas del Río Adaja y afluentes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.24 km² overlap
Humedales de Los Arenales
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.46 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
988 distinct species · 17 441 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 Adaja : 16 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 43 interactions GloBI sur 3 types (connectance 14.3%, 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°
12,0°C
Annual rain
388mm
Moisture idx (CMI)
-0,63
Runoff
52mm/an
PET
1 058mm
AET
334mm
Mean slope
0,8°
Water table
224cm
Forest
12%
Crops
62%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)