HydroBASINS lev08 watershed · #6080793050
Bassin de Riacho Negro
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 13 administrative regions across 2 countries : Asunción, Capiatá, Fernando de la Mora, Guarambaré, Juan Augusto Saldívar +8
Sub-basin area
1 038,4km²
Upstream area
903 976,9km²
Discharge
4 393,24m³/s
Mean elev.
77m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Paraguay551 km²
- Bassin de Río Pilcomayo74 km²
13 dept-equivalent regions (GADM L2)
- 783.3 km²75.6% of basin
- 54.4 km²5.3% of basin
- 46.7 km²4.5% of basin
- 27.9 km²2.7% of basin
- 27.8 km²2.7% of basin
- 26.0 km²2.5% of basin
- 24.4 km²2.4% of basin
- 20.5 km²2.0% of basin
5 moreFull L2 list
- San Lorenzo8.2 km² · 0.8%
- Guarambaré4.9 km² · 0.5%
- Capiatá4.9 km² · 0.5%
- Fernando de la Mora4.2 km² · 0.4%
- Juan Augusto Saldívar3.0 km² · 0.3%
1 intersecting protected areas
Cerro Lambare
IUCN VProtected Landscape
0.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 705 distinct species · 67 919 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Riacho Negro : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 2 bulles famille, 23 interactions GloBI documentées sur 4 types (connectance 4.9%, filtre Serrano α=0.2). Les 2 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
22,9°C
Annual rain
1 370mm
Moisture idx (CMI)
-0,16
Runoff
259mm/an
PET
1 634mm
AET
1 160mm
Mean slope
0,6°
Water table
60cm
Forest
55%
Crops
5%
Urban
18%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)