HydroBASINS lev08 watershed · #6080756800
Bassin de Río Grande de Tarija
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 3 administrative regions across 2 countries : Arce, General José de San Martín, Orán
Sub-basin area
1 702,2km²
Upstream area
11 153,7km²
Discharge
125,29m³/s
Mean elev.
642m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Itaú1194 km²
- Bassin de Río Grande de Tarija510 km²
3 dept-equivalent regions (GADM L2)
- 880.6 km²51.9% of basin
- 808.8 km²47.6% of basin
- 8.6 km²0.5% of basin
2 intersecting protected areas
Tariquía
IUCN Not ReportedNational Flora and Fauna Reserve
59.98 km² overlap
Multiple Use Nature Reserve
52.15 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
294 distinct species · 826 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Río Grande de Tarija : 32 espèces reliées par 45 interactions GloBI sur 5 types (connectance 6.1%, filtre Serrano α=0.2). 7 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°
21,5°C
Annual rain
1 093mm
Moisture idx (CMI)
-0,34
Runoff
423mm/an
PET
1 655mm
AET
924mm
Mean slope
8,5°
Water table
289cm
Forest
95%
Crops
1%
Urban
0%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)