HydroBASINS lev08 watershed · #6080072460
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 : San Bernardino de Sahagún, San Marcos
Sub-basin area
307,3km²
Upstream area
2 637,2km²
Discharge
64,21m³/s
Mean elev.
71m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Arroyo San Antonio421 km²
- Bassin · #6080073390192 km²
2 dept-equivalent regions (GADM L2)
- 155.4 km²50.8% of basin
- 150.5 km²49.2% of basin
1 intersecting protected areas
Cuenca Hidrográfica Rio San Jorge
IUCN Not ApplicableWatershed
275.47 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
359 distinct species · 2 117 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 : 21 espèces reliées par 20 interactions GloBI sur 2 types (connectance 6.7%, filtre Serrano α=0.2). 4 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°
27,5°C
Annual rain
1 700mm
Moisture idx (CMI)
-0,02
Runoff
659mm/an
PET
1 728mm
AET
1 243mm
Mean slope
1,0°
Water table
81cm
Forest
3%
Crops
7%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)