HydroBASINS lev08 watershed · #6080750140
Bassin de Rio Piraí
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 10 administrative regions : Angra dos Reis, Bananal, Barra do Piraí, Engenheiro Paulo de Frontin, Mangaratiba +5
Sub-basin area
1 051,7km²
Upstream area
1 051,7km²
Discharge
20,08m³/s
Mean elev.
665m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
10 dept-equivalent regions (GADM L2)
- 484.4 km²46.2% of basin
- 234.4 km²22.3% of basin
- 102.8 km²9.8% of basin
- Engenheiro Paulo de FrontinRio de Janeiro · Brazil93.9 km²9.0% of basin
- 73.8 km²7.0% of basin
- Barra do PiraíRio de Janeiro · Brazil44.2 km²4.2% of basin
- 15.1 km²1.4% of basin
- 0.3 km²0.0% of basin
2 moreFull L2 list
- Angra dos Reis0.1 km² · 0.0%
- Mangaratiba0.1 km² · 0.0%
22 intersecting protected areas
Environmental Protection Area
235.78 km² overlap
Parque Estadual Cunhambebe
IUCN IIPark
32.25 km² overlap
Natural Heritage Private Reserve
11.13 km² overlap
Estação Ecológica Bananal
IUCN IaEcological Station
8.54 km² overlap
Natural Heritage Private Reserve
6.97 km² overlap
Natural Heritage Private Reserve
3.76 km² overlap
Environmental Protection Area
2.53 km² overlap
Natural Heritage Private Reserve
1.64 km² overlap
Natural Heritage Private Reserve
1.43 km² overlap
13 more protected areassorted by overlap area
Natural Heritage Private Reserve
1.18 km² overlap
Natural Heritage Private Reserve
0.57 km² overlap
Natural Heritage Private Reserve
0.46 km² overlap
Wildlife Refuge
0.25 km² overlap
Natural Heritage Private Reserve
0.24 km² overlap
Natural Heritage Private Reserve
0.20 km² overlap
Natural Heritage Private Reserve
0.18 km² overlap
Environmental Protection Area
0.09 km² overlap
Park
0.08 km² overlap
Natural Heritage Private Reserve
0.07 km² overlap
Environmental Protection Area
0.06 km² overlap
Natural Heritage Private Reserve
0.06 km² overlap
Natural Heritage Private Reserve
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 880 distinct species · 18 409 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 Piraí : 19 espèces reliées par 18 interactions GloBI sur 2 types (connectance 7.1%, filtre Serrano α=0.2). 4 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°
19,5°C
Annual rain
1 454mm
Moisture idx (CMI)
0,00
Runoff
608mm/an
PET
1 451mm
AET
1 146mm
Mean slope
11,4°
Water table
413cm
Forest
22%
Crops
4%
Urban
5%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)