HydroBASINS lev08 watershed · #6080015950
Bassin de Arroio Bolaxa
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 4 administrative regions : Lagoa dos Patos, Pelotas, Rio Grande, Santa Vitória do Palmar
Sub-basin area
1 578,8km²
Upstream area
1 578,8km²
Discharge
8,8m³/s
Mean elev.
6m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 1220.8 km²77.4% of basin
- 262.4 km²16.6% of basin
- Lagoa dos Patos51.4 km²3.3% of basin
- 0.4 km²0.0% of basin
5 intersecting protected areas
Estação Ecológica Do Taim
IUCN IaEcological Station
39.82 km² overlap
Wildlife Refuge
34.24 km² overlap
Environmental Protection Area
4.71 km² overlap
Park
3.88 km² overlap
Natural Heritage Private Reserve
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 291 distinct species · 69 641 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 Bolaxa : 23 espèces reliées par 30 interactions GloBI sur 3 types (connectance 8.5%, 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°
17,9°C
Annual rain
1 243mm
Moisture idx (CMI)
0,07
Runoff
684mm/an
PET
1 158mm
AET
920mm
Mean slope
0,2°
Water table
16cm
Forest
53%
Crops
12%
Urban
4%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)