HydroBASINS lev08 watershed · #7080773850
Bassin de Arroyo San Antonio
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 : Piedras Negras, Zaragoza
Sub-basin area
305,4km²
Upstream area
1 508,5km²
Discharge
1,05m³/s
Mean elev.
307m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Arroyo San Antonio319 km²
- Bassin de Arroyo San Antonio147 km²
2 dept-equivalent regions (GADM L2)
- 297.3 km²97.5% of basin
- 7.7 km²2.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
50 distinct species · 175 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 19 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 Arroyo San Antonio : 17 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 22 interactions GloBI sur 3 types (connectance 12.9%, filtre Serrano α=0.2). 2 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°
21,7°C
Annual rain
444mm
Moisture idx (CMI)
-0,73
Runoff
22mm/an
PET
1 625mm
AET
375mm
Mean slope
0,3°
Water table
74cm
Forest
0%
Crops
6%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)