HydroBASINS lev08 watershed · #6080890500
Bassin de Arroyo Grande del Portillo
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 Carlos, Tunuyán
Sub-basin area
940,5km²
Upstream area
8 114,9km²
Discharge
41,11m³/s
Mean elev.
2 322m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Tunuyán2573 km²
- Bassin de Arroyo San Carlos1261 km²
2 dept-equivalent regions (GADM L2)
- 920.1 km²97.9% of basin
- 20.0 km²2.1% of basin
1 intersecting protected areas
Manzano Historico
IUCN VProtected Nature and Cultural and Landscape Reserve
9.30 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
725 distinct species · 4 863 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 50 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 Grande del Portillo : 36 espèces reliées par 71 interactions GloBI sur 5 types (connectance 5.8%, 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°
7,1°C
Annual rain
381mm
Moisture idx (CMI)
-0,61
Runoff
172mm/an
PET
1 117mm
AET
328mm
Mean slope
15,2°
Water table
801cm
Forest
17%
Crops
4%
Urban
2%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)