HydroBASINS lev08 watershed · #2080554480
Bassin de Triversa
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 : Asti, Cuneo, Torino
Sub-basin area
524,7km²
Upstream area
525km²
Discharge
10,2m³/s
Mean elev.
234m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 432.8 km²82.3% of basin
- 87.8 km²16.7% of basin
- 5.3 km²1.0% of basin
2 intersecting protected areas
Regional/Provincial Nature Reserve
9.29 km² overlap
Valmanera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.93 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 910 distinct species · 61 848 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Triversa : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 116 interactions GloBI sur 5 types (connectance 17.4%, filtre Serrano α=0.2). 14 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
740mm
Moisture idx (CMI)
-0,14
Runoff
613mm/an
PET
865mm
AET
623mm
Mean slope
6,1°
Water table
227cm
Forest
16%
Crops
35%
Urban
5%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)