HydroBASINS lev08 watershed · #6080844620
Bassin de Arroio Sampaio
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 13 administrative regions : Bom Retiro do Sul, Boqueirão do Leão, Brochier, Cruzeiro do Sul, Estrela +8
Sub-basin area
824,3km²
Upstream area
23 971,5km²
Discharge
634,11m³/s
Mean elev.
149m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Arroio Boa Vista578 km²
- Bassin de Rio Taquari25 km²
13 dept-equivalent regions (GADM L2)
- Cruzeiro do Sul148.0 km²18.0% of basin
- 117.0 km²14.2% of basin
- 108.2 km²13.1% of basin
- 91.2 km²11.1% of basin
- 65.6 km²8.0% of basin
- 54.5 km²6.6% of basin
- 46.8 km²5.7% of basin
- 45.6 km²5.5% of basin
5 moreFull L2 list
- Lajeado45.5 km² · 5.5%
- Fazenda Vilanova42.7 km² · 5.2%
- Sério36.9 km² · 4.5%
- Boqueirão do Leão18.5 km² · 2.2%
- Brochier2.7 km² · 0.3%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 355 distinct species · 5 253 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 Arroio Sampaio : 33 espèces reliées par 75 interactions GloBI sur 4 types (connectance 9.6%, filtre Serrano α=0.2). 7 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°
19,3°C
Annual rain
1 339mm
Moisture idx (CMI)
0,02
Runoff
670mm/an
PET
1 305mm
AET
1 118mm
Mean slope
5,8°
Water table
218cm
Forest
29%
Crops
39%
Urban
9%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)