HydroBASINS lev08 watershed · #2080559140
Bassin de Tanaro
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 across 2 countries : Alpes-Maritimes, Cuneo, Imperia, Savona
Sub-basin area
1 780,5km²
Upstream area
1 780,5km²
Discharge
36,96m³/s
Mean elev.
858m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 1709.1 km²95.8% of basin
- 63.2 km²3.5% of basin
- 10.0 km²0.6% of basin
- 1.9 km²0.1% of basin
2 communes (GADM L5)Available for FRA, RWA
24 intersecting protected areas
Alte Valli Pesio e Tanaro
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
109.97 km² overlap
Alte Valli Pesio e Tanaro
IUCN Not ReportedSpecial Protection Area (Birds Directive)
109.97 km² overlap
Regional/Provincial Nature Park
66.04 km² overlap
Cima di Piano Cavallo - Bric Cornia
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
43.06 km² overlap
Special Areas of Conservation (Habitats Directive)
29.41 km² overlap
Altopiano di Bainale
IUCN Not ReportedSpecial Protection Area (Birds Directive)
18.43 km² overlap
Monte Saccarello - Monte Fronté
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
15.08 km² overlap
Piancavallo
IUCN Not ReportedSpecial Protection Area (Birds Directive)
11.43 km² overlap
M. Antoroto
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.63 km² overlap
15 more protected areassorted by overlap area
Regional/Provincial Nature Reserve
6.31 km² overlap
Bosco di Bagnasco
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.40 km² overlap
Saccarello - Garlenda
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.07 km² overlap
Oasi di Crava Morozzo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.99 km² overlap
Oasi di Crava Morozzo
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.99 km² overlap
Regional/Provincial Nature Reserve
2.96 km² overlap
Riserva naturale speciale del popolamento di Juniperus Phoenicea di Rocca San Giovanni - Saben
IUCN IVRegional/Provincial Nature Reserve
2.30 km² overlap
Regional/Provincial Nature Reserve
2.22 km² overlap
Sorgenti del Belbo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.04 km² overlap
Marguareis - La Brigue - Fontan - Saorge
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.42 km² overlap
Alto Caprauna
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.25 km² overlap
Croce della Tia - Rio Barchei
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.80 km² overlap
Bric Zerbi
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.15 km² overlap
Monte Galero
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.10 km² overlap
National Park - Buffer zone/Area of adhesion
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 675 distinct species · 110 565 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Tanaro : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 72 interactions GloBI sur 3 types (connectance 17.7%, filtre Serrano α=0.2). 6 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
850mm
Moisture idx (CMI)
0,09
Runoff
637mm/an
PET
747mm
AET
596mm
Mean slope
13,7°
Water table
480cm
Forest
71%
Crops
18%
Urban
2%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)