HydroBASINS lev08 watershed · #2080548920
Bassin de Chiavenna
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 2 administrative regions : Lodi, Piacenza
Sub-basin area
267km²
Upstream area
42 914,1km²
Discharge
1 147,19m³/s
Mean elev.
181m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Torrente Nure563 km²
- Bassin de Po210 km²
2 dept-equivalent regions (GADM L2)
- Piacenza239.4 km²89.5% of basin
- 28.1 km²10.5% of basin
5 intersecting protected areas
Fiume Po da Rio Boriacco a Bosco Ospizio
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.10 km² overlap
Fiume Po da Rio Boriacco a Bosco Ospizio
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
15.10 km² overlap
Castelnuovo Bocca d'Adda
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.65 km² overlap
Regional/Provincial Nature Reserve
1.41 km² overlap
Castell'Arquato, Lugagnano Val d'Arda
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.27 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 075 distinct species · 3 885 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 Chiavenna : 32 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 97 interactions GloBI sur 5 types (connectance 11.3%, 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°
12,4°C
Annual rain
793mm
Moisture idx (CMI)
-0,16
Runoff
509mm/an
PET
952mm
AET
636mm
Mean slope
3,2°
Water table
127cm
Forest
12%
Crops
52%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)