HydroBASINS lev08 watershed · #2080536780
Bassin de Fiume Sesia
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 : Verbano-Cusio-Ossola, Vercelli
Sub-basin area
83,3km²
Upstream area
701km²
Discharge
23,42m³/s
Mean elev.
730m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Torrente Mastallone150 km²
- Bassin de Rio Pisciole43 km²
2 dept-equivalent regions (GADM L2)
- 83.4 km²99.9% of basin
- 0.1 km²0.1% of basin
2 intersecting protected areas
Laghetto di Sant'Agostino
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.21 km² overlap
Regional/Provincial Nature Reserve
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
414 distinct species · 832 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Fiume Sesia : 23 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 73 interactions GloBI sur 5 types (connectance 14.7%, 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°
9,0°C
Annual rain
1 089mm
Moisture idx (CMI)
0,27
Runoff
1 042mm/an
PET
785mm
AET
719mm
Mean slope
18,0°
Water table
585cm
Forest
94%
Crops
0%
Urban
19%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)