HydroBASINS lev08 watershed · #6080844610
Bassin de Arroio Castelhano
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 5 administrative regions : Bom Retiro do Sul, Boqueirão do Leão, Cruzeiro do Sul, Santa Cruz do Sul, Venâncio Aires
Sub-basin area
580,6km²
Upstream area
580,6km²
Discharge
13,21m³/s
Mean elev.
213m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 412.4 km²71.1% of basin
- 159.3 km²27.5% of basin
- Cruzeiro do Sul7.0 km²1.2% of basin
- 1.2 km²0.2% of basin
- 0.0 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
230 distinct species · 375 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Castelhano : 29 espèces reliées par 59 interactions GloBI sur 4 types (connectance 8.4%, filtre Serrano α=0.2). 9 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 322mm
Moisture idx (CMI)
0,01
Runoff
718mm/an
PET
1 301mm
AET
1 109mm
Mean slope
8,2°
Water table
299cm
Forest
51%
Crops
35%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)