HydroBASINS lev08 watershed · #6080907920
Bassin de Arroyo Vallimanca
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 6 administrative regions : Bolívar, General Alvear, Olavarría, Saladillo, Tapalqué +1
Sub-basin area
2 676,8km²
Upstream area
15 836,8km²
Discharge
130,02m³/s
Mean elev.
77m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Arroyo Vallimanca1172 km²
- Bassin de Arroyo Vallimanca889 km²
6 dept-equivalent regions (GADM L2)
- 884.8 km²33.1% of basin
- 806.7 km²30.1% of basin
- 458.2 km²17.1% of basin
- 279.3 km²10.4% of basin
- 241.1 km²9.0% of basin
- 7.1 km²0.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
151 distinct species · 867 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Vallimanca : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 50 interactions GloBI sur 3 types (connectance 6.7%, filtre Serrano α=0.2). 12 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°
15,3°C
Annual rain
965mm
Moisture idx (CMI)
-0,28
Runoff
255mm/an
PET
1 334mm
AET
818mm
Mean slope
0,0°
Water table
4cm
Forest
2%
Crops
16%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)