HydroBASINS lev08 watershed · #6080014150
Bassin de Rio Ariró
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 6 administrative regions : Angra dos Reis, Bananal, Itaguaí, Mangaratiba, Rio Claro +1
Sub-basin area
1 042,5km²
Upstream area
1 042,5km²
Discharge
5m³/s
Mean elev.
319m
Administrative coverage
6 dept-equivalent regions (GADM L2)
- Angra dos ReisRio de Janeiro · Brazil499.9 km²48.1% of basin
- MangaratibaRio de Janeiro · Brazil304.5 km²29.3% of basin
- 51.6 km²5.0% of basin
- 33.8 km²3.2% of basin
- 26.2 km²2.5% of basin
- Rio de JaneiroRio de Janeiro · Brazil3.0 km²0.3% of basin
26 intersecting protected areas
Parque Estadual Cunhambebe
IUCN IIPark
293.20 km² overlap
Environmental Protection Area
234.43 km² overlap
Environmental Protection Area
213.04 km² overlap
Paraty and Ilha Grande - Culture and Biodiversity
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
147.35 km² overlap
Park
120.82 km² overlap
Biological Reserve
32.67 km² overlap
Environmental Protection Area
32.07 km² overlap
Environmental Protection Area
25.88 km² overlap
Environmental Protection Area
14.44 km² overlap
17 more protected areassorted by overlap area
Environmental Protection Area
11.50 km² overlap
Park
9.45 km² overlap
Guarani de Bracui
IUCN Not ReportedIndigenous Area
8.34 km² overlap
Environmental Protection Area
5.50 km² overlap
Natural Heritage Private Reserve
5.22 km² overlap
Sustainable Development Reserve
3.84 km² overlap
Estação Ecológica De Tamoios
IUCN IaEcological Station
3.40 km² overlap
Park
2.16 km² overlap
Area of Relevant Ecological Interest
1.95 km² overlap
Natural Heritage Private Reserve
1.18 km² overlap
Environmental Protection Area
1.15 km² overlap
Natural Heritage Private Reserve
0.51 km² overlap
Natural Heritage Private Reserve
0.17 km² overlap
Natural Heritage Private Reserve
0.17 km² overlap
Natural Heritage Private Reserve
0.11 km² overlap
Environmental Protection Area
0.07 km² overlap
Natural Heritage Private Reserve
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 079 distinct species · 22 571 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 23 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 Ariró : 20 espèces reliées par 20 interactions GloBI sur 2 types (connectance 7.9%, filtre Serrano α=0.2). 3 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°
21,6°C
Annual rain
1 540mm
Moisture idx (CMI)
0,06
Runoff
687mm/an
PET
1 428mm
AET
1 211mm
Mean slope
14,8°
Water table
556cm
Forest
69%
Crops
6%
Urban
9%
Protected
48%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)