HydroBASINS lev08 watershed · #6080018500
Bassin de Arroyo Napostá Grande
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 : Bahía Blanca, Tornquist
Sub-basin area
1 294,8km²
Upstream area
1 294,8km²
Discharge
4,24m³/s
Mean elev.
209m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 673.0 km²51.9% of basin
- 622.6 km²48.1% of basin
1 intersecting protected areas
Ernesto Tornquist
IUCN IIProvincial Park
0.27 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 111 distinct species · 17 992 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Napostá Grande : 23 espèces reliées par 55 interactions GloBI sur 4 types (connectance 8.3%, filtre Serrano α=0.2). 14 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°
14,4°C
Annual rain
672mm
Moisture idx (CMI)
-0,47
Runoff
122mm/an
PET
1 258mm
AET
571mm
Mean slope
1,6°
Water table
170cm
Forest
1%
Crops
43%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)