HydroBASINS lev08 watershed · #2080016180
Bassin de Torrente Arroscia
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 3 administrative regions : Cuneo, Imperia, Savona
Sub-basin area
439,7km²
Upstream area
439,8km²
Discharge
7,83m³/s
Mean elev.
614m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 207.9 km²47.2% of basin
- 197.7 km²44.9% of basin
- 34.9 km²7.9% of basin
19 intersecting protected areas
Monte Galero
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
31.87 km² overlap
Monte Monega - Monte Prearba
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
24.43 km² overlap
Castell'Ermo - Peso Grande
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
19.66 km² overlap
Alto Caprauna
IUCN Not ReportedSpecial Protection Area (Birds Directive)
12.23 km² overlap
Monte Acuto - Poggio Grande - Rio Torsero
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.82 km² overlap
Bosco di Rezzo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.76 km² overlap
Sciorella
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.91 km² overlap
Monte Saccarello - Monte Fronté
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.68 km² overlap
Torrente Arroscia e Centa
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.87 km² overlap
10 more protected areassorted by overlap area
Cima di Piano Cavallo - Bric Cornia
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.83 km² overlap
Saccarello - Garlenda
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.39 km² overlap
Campasso - Grotta Sgarbu Du Ventu
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.04 km² overlap
Monte Ravinet - Rocca Barbena
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.84 km² overlap
Other Protected Natural Regional Areas
0.70 km² overlap
Other Protected Natural Regional Areas
0.58 km² overlap
Monte Carmo - Monte Settepani
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.27 km² overlap
Lerrone - Valloni
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.21 km² overlap
Monte Carpasina
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.16 km² overlap
International significance Natural Marine Area
0.10 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 093 distinct species · 57 972 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 Torrente Arroscia : 21 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 62 interactions GloBI sur 4 types (connectance 12.5%, filtre Serrano α=0.2). 11 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°
12,1°C
Annual rain
837mm
Moisture idx (CMI)
0,05
Runoff
591mm/an
PET
795mm
AET
605mm
Mean slope
19,4°
Water table
626cm
Forest
90%
Crops
3%
Urban
5%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)