HydroBASINS lev08 watershed · #6080818410
Bassin de Arroyo Pirayuí
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 1 administrative regions : Capital
Sub-basin area
57,5km²
Upstream area
2 921,9km²
Discharge
26,24m³/s
Mean elev.
60m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Arroyo Sombrero247 km²
- Bassin de Riachuelo83 km²
1 dept-equivalent regions (GADM L2)
- Capital57.4 km²100.0% of basin
1 intersecting protected areas
Laguna Brava
IUCN VIProvincial Nature Reserve
0.32 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 328 distinct species · 4 737 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 Pirayuí : 30 espèces reliées par 35 interactions GloBI sur 4 types (connectance 6.2%, 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°
21,7°C
Annual rain
1 260mm
Moisture idx (CMI)
-0,17
Runoff
243mm/an
PET
1 519mm
AET
1 067mm
Mean slope
0,3°
Water table
37cm
Forest
22%
Crops
4%
Urban
42%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)