HydroBASINS lev08 watershed · #2080553680
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 3 administrative regions : Alessandria, Asti, Cuneo
Sub-basin area
1 217,2km²
Upstream area
5 377,8km²
Discharge
115,35m³/s
Mean elev.
231m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Triversa525 km²
- Bassin de Tanaro436 km²
3 dept-equivalent regions (GADM L2)
- 633.8 km²52.0% of basin
- 357.3 km²29.3% of basin
- 228.9 km²18.8% of basin
10 intersecting protected areas
Valmanera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
12.99 km² overlap
Other Protected Natural Regional Areas
3.94 km² overlap
Regional/Provincial Nature Reserve
2.03 km² overlap
Rocchetta Tanaro
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.27 km² overlap
Regional/Provincial Nature Park
1.23 km² overlap
Regional/Provincial Nature Reserve
0.29 km² overlap
Sorgenti del Belbo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.16 km² overlap
Verneto di Rocchetta Tanaro
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.10 km² overlap
Bric Montariolo
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.05 km² overlap
1 more protected areassorted by overlap area
Stagni di Belangero (Asti)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 120 distinct species · 64 053 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 94 interactions GloBI sur 5 types (connectance 14.9%, filtre Serrano α=0.2). 12 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°
12,3°C
Annual rain
812mm
Moisture idx (CMI)
-0,06
Runoff
624mm/an
PET
859mm
AET
643mm
Mean slope
6,1°
Water table
231cm
Forest
18%
Crops
61%
Urban
8%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)