HydroBASINS lev08 watershed · #6080013880
Bassin de Rio São João
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 : Araruama, Cabo Frio, Cachoeiras de Macacu, Casimiro de Abreu, Macaé +5
Sub-basin area
2 110,8km²
Upstream area
2 111km²
Discharge
43,5m³/s
Mean elev.
126m
Administrative coverage
10 dept-equivalent regions (GADM L2)
- Silva JardimRio de Janeiro · Brazil936.8 km²44.5% of basin
- Casimiro de AbreuRio de Janeiro · Brazil351.4 km²16.7% of basin
- 348.3 km²16.5% of basin
- Rio BonitoRio de Janeiro · Brazil263.3 km²12.5% of basin
- 132.4 km²6.3% of basin
- Cachoeiras de MacacuRio de Janeiro · Brazil52.7 km²2.5% of basin
- Nova FriburgoRio de Janeiro · Brazil12.7 km²0.6% of basin
- São Pedro da AldeiaRio de Janeiro · Brazil6.3 km²0.3% of basin
30 intersecting protected areas
Environmental Protection Area
1466.86 km² overlap
Park
113.03 km² overlap
Biological Reserve
50.52 km² overlap
Reserva Biológica União
IUCN IaBiological Reserve
29.73 km² overlap
Environmental Protection Area
15.01 km² overlap
Natural Heritage Private Reserve
9.73 km² overlap
Environmental Protection Area
7.18 km² overlap
Park
5.97 km² overlap
Environmental Protection Area
5.54 km² overlap
21 more protected areassorted by overlap area
Natural Heritage Private Reserve
5.08 km² overlap
Natural Heritage Private Reserve
4.72 km² overlap
Natural Heritage Private Reserve
4.15 km² overlap
Environmental Protection Area
1.73 km² overlap
Natural Heritage Private Reserve
1.09 km² overlap
Natural Heritage Private Reserve
0.61 km² overlap
Natural Heritage Private Reserve
0.46 km² overlap
Natural Heritage Private Reserve
0.41 km² overlap
Natural Heritage Private Reserve
0.40 km² overlap
Natural Heritage Private Reserve
0.31 km² overlap
Park
0.25 km² overlap
Park
0.24 km² overlap
Natural Heritage Private Reserve
0.24 km² overlap
Natural Monument
0.23 km² overlap
Natural Heritage Private Reserve
0.22 km² overlap
Natural Heritage Private Reserve
0.18 km² overlap
Natural Heritage Private Reserve
0.17 km² overlap
Natural Heritage Private Reserve
0.17 km² overlap
Natural Heritage Private Reserve
0.16 km² overlap
Natural Heritage Private Reserve
0.14 km² overlap
Environmental Protection Area
0.13 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 432 distinct species · 47 978 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 São João : 18 espèces reliées par 31 interactions GloBI sur 2 types (connectance 11.2%, filtre Serrano α=0.2). 6 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°
22,6°C
Annual rain
1 156mm
Moisture idx (CMI)
-0,15
Runoff
633mm/an
PET
1 357mm
AET
974mm
Mean slope
7,7°
Water table
301cm
Forest
12%
Crops
10%
Urban
1%
Protected
73%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)