HydroBASINS lev08 watershed · #6080816330
Bassin de Arroyo San Juan
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 4 administrative regions across 2 countries : Cambyreta, Candelaria, Nueva Alborada, San Ignacio
Sub-basin area
456,5km²
Upstream area
934 912,6km²
Discharge
12 996,31m³/s
Mean elev.
152m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Arroyo Yabebiry1885 km²
- Bassin de Río Paraná228 km²
4 dept-equivalent regions (GADM L2)
- 275.9 km²60.5% of basin
- 89.9 km²19.7% of basin
- 89.9 km²19.7% of basin
- 0.0 km²0.0% of basin
2 intersecting protected areas
Wilderness Nature Reserve
57.23 km² overlap
Puerto San Juan
IUCN VIPrivate Reserve
2.62 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 975 distinct species · 80 402 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 Juan : 16 espèces reliées par 15 interactions GloBI sur 2 types (connectance 8.8%, filtre Serrano α=0.2). 3 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°
20,8°C
Annual rain
1 734mm
Moisture idx (CMI)
0,09
Runoff
824mm/an
PET
1 573mm
AET
1 353mm
Mean slope
2,7°
Water table
211cm
Forest
55%
Crops
3%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)