HydroBASINS lev08 watershed · #6080450990
Bassin de Rio Arara
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 across 2 countries : Atalaya, Marechal Thaumaturgo
Sub-basin area
624,1km²
Upstream area
13 556,9km²
Discharge
335,1m³/s
Mean elev.
282m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rio Acuriá654 km²
- Bassin de Rio Tejo234 km²
2 dept-equivalent regions (GADM L2)
- 549.1 km²88.4% of basin
- 72.4 km²11.6% of basin
3 intersecting protected areas
Extractive Reserve
326.35 km² overlap
Kampa do Rio Amonea
IUCN Not ReportedIndigenous Area
171.93 km² overlap
Arara do Rio Amonia
IUCN Not ReportedIndigenous Area
43.22 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
157 distinct species · 443 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 2 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 Rio Arara : 2 espèces reliées par 1 interaction GloBI sur 1 type (connectance 100.0%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
25,7°C
Annual rain
1 787mm
Moisture idx (CMI)
0,02
Runoff
767mm/an
PET
1 754mm
AET
1 364mm
Mean slope
1,8°
Water table
42cm
Forest
100%
Crops
0%
Urban
0%
Protected
80%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)