HydroBASINS lev08 watershed · #6080015510
Bassin de Rio Gravataí
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 9 administrative regions : Alvorada, Cachoeirinha, Canoas, Glorinha, Gravataí +4
Sub-basin area
2 020,7km²
Upstream area
2 020,7km²
Discharge
44,03m³/s
Mean elev.
53m
Administrative coverage
9 dept-equivalent regions (GADM L2)
- 561.4 km²27.8% of basin
- 469.0 km²23.2% of basin
- 395.0 km²19.6% of basin
- 323.7 km²16.0% of basin
- 100.9 km²5.0% of basin
- 71.7 km²3.6% of basin
- Cachoeirinha36.5 km²1.8% of basin
- 35.2 km²1.7% of basin
1 moreFull L2 list
- Canoas25.0 km² · 1.2%
9 intersecting protected areas
Environmental Protection Area
1347.35 km² overlap
Wildlife Refuge
25.52 km² overlap
Environmental Protection Area
1.29 km² overlap
Park
1.07 km² overlap
Park
0.21 km² overlap
Natural Heritage Private Reserve
0.10 km² overlap
Natural Heritage Private Reserve
0.10 km² overlap
Cantagalo
IUCN Not ReportedIndigenous Area
0.04 km² overlap
Natural Heritage Private Reserve
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 725 distinct species · 77 451 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Gravataí : 25 espèces reliées par 50 interactions GloBI sur 5 types (connectance 8.4%, filtre Serrano α=0.2). 10 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°
19,0°C
Annual rain
1 494mm
Moisture idx (CMI)
0,16
Runoff
587mm/an
PET
1 254mm
AET
1 073mm
Mean slope
2,2°
Water table
104cm
Forest
11%
Crops
13%
Urban
17%
Protected
66%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)