HydroBASINS lev08 watershed · #6080808780
Bassin de Rio Itajaí-Açu
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 18 administrative regions : Balneário Piçarras, Barra Velha, Blumenau, Brusque, Gaspar +13
Sub-basin area
1 991,8km²
Upstream area
13 372,7km²
Discharge
369,8m³/s
Mean elev.
185m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rio dos Cedros1505 km²
- Bassin de Rio Itajaí-Açu937 km²
18 dept-equivalent regions (GADM L2)
- 431.3 km²21.7% of basin
- 361.6 km²18.2% of basin
- 256.7 km²12.9% of basin
- 227.8 km²11.5% of basin
- 209.4 km²10.5% of basin
- 169.2 km²8.5% of basin
- Massaranduba93.2 km²4.7% of basin
- 81.5 km²4.1% of basin
10 moreFull L2 list
- Balneário Piçarras53.2 km² · 2.7%
- Itajaí44.1 km² · 2.2%
- Timbó22.1 km² · 1.1%
- Penha15.0 km² · 0.8%
- Barra Velha14.9 km² · 0.7%
- São João do Itaperiú5.9 km² · 0.3%
- Jaraguá do Sul1.3 km² · 0.1%
- Rio dos Cedros0.5 km² · 0.0%
- Guabiruba0.4 km² · 0.0%
- Brusque0.0 km² · 0.0%
5 intersecting protected areas
Park
179.19 km² overlap
Park
14.01 km² overlap
Natural Heritage Private Reserve
0.82 km² overlap
Park
0.24 km² overlap
Park
0.22 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 213 distinct species · 92 326 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Itajaí-Açu : 27 espèces reliées par 28 interactions GloBI sur 4 types (connectance 6.0%, 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°
19,6°C
Annual rain
1 613mm
Moisture idx (CMI)
0,20
Runoff
873mm/an
PET
1 288mm
AET
1 250mm
Mean slope
9,8°
Water table
314cm
Forest
39%
Crops
9%
Urban
16%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)