HydroBASINS lev08 watershed · #6080263540
Bassin de Boca do Arapiri
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 : Alenquer, Curuá, Monte Alegre, Santarém
Sub-basin area
2 444,5km²
Upstream area
28 404,6km²
Discharge
470,12m³/s
Mean elev.
11m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rio Curuá1157 km²
- Bassin de Rio Curuá107 km²
4 dept-equivalent regions (GADM L2)
- 1224.1 km²50.3% of basin
- 947.2 km²38.9% of basin
- 148.3 km²6.1% of basin
- 114.0 km²4.7% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
672 distinct species · 2 628 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 Boca do Arapiri : 23 espèces reliées par 36 interactions GloBI sur 3 types (connectance 8.3%, 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°
26,6°C
Annual rain
1 747mm
Moisture idx (CMI)
0,07
Runoff
651mm/an
PET
1 621mm
AET
1 178mm
Mean slope
0,5°
Water table
28cm
Forest
40%
Crops
5%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)