HydroBASINS lev08 watershed · #2080543500
Bassin de Torrente Elvo
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 : Aosta, Biella, Torino, Vercelli
Sub-basin area
1 080km²
Upstream area
1 080km²
Discharge
29,15m³/s
Mean elev.
490m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 718.0 km²66.3% of basin
- 350.8 km²32.4% of basin
- 10.2 km²0.9% of basin
- Aosta3.4 km²0.3% of basin
24 intersecting protected areas
Val Sessera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
36.14 km² overlap
Regional/Provincial Nature Reserve
26.25 km² overlap
Serra di Ivrea
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
19.07 km² overlap
Stazioni di Isoetes malinverniana
IUCN Not ReportedSite of Community Importance (Habitats Directive)
16.57 km² overlap
Regional/Provincial Nature Reserve
15.21 km² overlap
Baraggia di Rovasenda
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.79 km² overlap
Regional/Provincial Nature Reserve
7.44 km² overlap
La Bessa
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.34 km² overlap
Baraggia di Candelo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.04 km² overlap
15 more protected areassorted by overlap area
Lame del Sesia e Isolone di Oldenico
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.39 km² overlap
Lame del Sesia e Isolone di Oldenico
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.39 km² overlap
Garzaia del Rio Druma
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.28 km² overlap
Garzaia del Rio Druma
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.28 km² overlap
Regional/Provincial Nature Park
1.26 km² overlap
Garzaia di Carisio
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.03 km² overlap
Garzaia di Carisio
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.03 km² overlap
Regional/Provincial Nature Reserve
0.96 km² overlap
Regional/Provincial Nature Reserve
0.71 km² overlap
Other Protected Natural Regional Areas
0.45 km² overlap
Mont Mars
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.40 km² overlap
Riserva naturale Mont Mars
IUCN IVRegional/Provincial Nature Reserve
0.39 km² overlap
Alta Valsesia e Valli Otro, Vogna, Gronda, Artogna e Sorba
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.26 km² overlap
Regional/Provincial Nature Reserve
0.11 km² overlap
Regional/Provincial Nature Reserve
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 548 distinct species · 51 055 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 Torrente Elvo : 22 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 63 interactions GloBI sur 4 types (connectance 13.5%, 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°
10,3°C
Annual rain
977mm
Moisture idx (CMI)
0,10
Runoff
853mm/an
PET
854mm
AET
707mm
Mean slope
7,0°
Water table
241cm
Forest
41%
Crops
43%
Urban
11%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)