HydroBASINS lev08 watershed · #6080013760
Bassin de Rio Açú
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 3 administrative regions : Campos dos Goytacazes, São Francisco de Itabapoana, São João da Barra
Sub-basin area
509,6km²
Upstream area
509,6km²
Discharge
0,02m³/s
Mean elev.
3m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- São João da BarraRio de Janeiro · Brazil256.0 km²50.4% of basin
- Campos dos GoytacazesRio de Janeiro · Brazil234.1 km²46.1% of basin
- São Francisco de ItabapoanaRio de Janeiro · Brazil0.0 km²0.0% of basin
6 intersecting protected areas
Park
82.49 km² overlap
Natural Heritage Private Reserve
38.44 km² overlap
Environmental Protection Area
9.10 km² overlap
Environmental Protection Area
4.13 km² overlap
Environmental Protection Area
2.83 km² overlap
Environmental Protection Area
0.64 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
873 distinct species · 6 951 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Açú : 29 espèces reliées par 52 interactions GloBI sur 6 types (connectance 6.7%, filtre Serrano α=0.2). 11 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°
23,1°C
Annual rain
1 033mm
Moisture idx (CMI)
-0,24
Runoff
163mm/an
PET
1 365mm
AET
875mm
Mean slope
0,1°
Water table
9cm
Forest
7%
Crops
73%
Urban
3%
Protected
24%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)