HydroBASINS lev08 watershed · #6080008020
Bassin de Rio Arauaia
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 4 administrative regions : Abaetetuba, Acará, Barcarena, Belém
Sub-basin area
1 252,6km²
Upstream area
1 252,6km²
Discharge
0,44m³/s
Mean elev.
17m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 764.6 km²61.3% of basin
- 427.5 km²34.3% of basin
- 54.7 km²4.4% of basin
- 0.2 km²0.0% of basin
1 intersecting protected areas
Wetland of International Importance (Ramsar Site)
42.89 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 321 distinct species · 6 043 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 Arauaia : 24 espèces reliées par 33 interactions GloBI sur 3 types (connectance 7.1%, 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°
26,9°C
Annual rain
2 520mm
Moisture idx (CMI)
0,33
Runoff
1 273mm/an
PET
1 697mm
AET
1 458mm
Mean slope
0,9°
Water table
16cm
Forest
59%
Crops
17%
Urban
5%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)