HydroBASINS lev08 watershed · #2080549370
Bassin de Torrente Versa
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 : Pavia, Piacenza
Sub-basin area
172,2km²
Upstream area
37 474,5km²
Discharge
1 021,05m³/s
Mean elev.
135m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Fiume Ticino1838 km²
- Bassin de Fiume Po734 km²
2 dept-equivalent regions (GADM L2)
- 171.6 km²99.4% of basin
- Piacenza1.0 km²0.6% of basin
5 intersecting protected areas
Po da Albaredo Arnaboldi ad Arena Po
IUCN Not ReportedSpecial Protection Area (Birds Directive)
7.29 km² overlap
Regional/Provincial Nature Park
6.39 km² overlap
Boschi del Ticino
IUCN Not ReportedSpecial Protection Area (Birds Directive)
6.35 km² overlap
Boschi di Vaccarizza
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.66 km² overlap
Siti riproduttivi di Acipenser naccarii
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.16 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
736 distinct species · 6 807 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Versa : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 98 interactions GloBI sur 6 types (connectance 13.2%, 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°
12,7°C
Annual rain
919mm
Moisture idx (CMI)
-0,02
Runoff
684mm/an
PET
941mm
AET
684mm
Mean slope
3,1°
Water table
133cm
Forest
6%
Crops
56%
Urban
14%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)