HydroBASINS lev08 watershed · #2080551820

Bassin de Fiume Po

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, Pavia

Pfafstetter: 21406910

Sub-basin area

379,3km²

Upstream area

17 452,6km²

Discharge

408,75m³/s

Mean elev.

129m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Roggia Laciazzolo303 km²

▲ Receives from 2 basins

Bassin de Fiume Po1056 km²
Bassin de Roggia Busca703 km²

3 dept-equivalent regions (GADM L2)

Alessandria
Piemonte · Italy
233.3 km²
61.4% of basin
Pavia
Lombardia · Italy
105.8 km²
27.8% of basin
Asti
Piemonte · Italy
41.0 km²
10.8% of basin

12 intersecting protected areas

Risaie della Lomellina
IUCN Not Reported
Special Protection Area (Birds Directive)
104.81 km² overlap
Fiume Po - tratto vercellese alessandrino
IUCN Not Reported
Special Protection Area (Birds Directive)
45.39 km² overlap
Confluenza Po - Sesia - Tanaro
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
25.79 km² overlap
Sistema delle aree protette della fascia fluviale del Po
IUCN V
Other Protected Natural Regional Areas
19.05 km² overlap
Bric Montariolo
IUCN Not Reported
Site of Community Importance (Habitats Directive)
4.96 km² overlap
Garzaia di Sartirana
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
1.90 km² overlap
Riserva naturale Abbazia Acqualunga
IUCN IV
Regional/Provincial Nature Reserve
1.07 km² overlap
Abbazia Acqualunga
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
1.07 km² overlap
Garzaia del Bosco Basso
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.41 km² overlap

3 more protected areassorted by overlap area

Riserva naturale Garzaia del Bosco Basso
IUCN IV
Regional/Provincial Nature Reserve
0.41 km² overlap
Monumento naturale Garzaia della Rinalda
IUCN III
Other Protected Natural Regional Areas
0.38 km² overlap
Garzaia della Rinalda
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.38 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

2 271 distinct species · 18 061 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 46 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Fiume Po : 37 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 120 interactions GloBI sur 5 types (connectance 11.1%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

120

Connectance

0.111

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

12,5°C

Annual rain

913mm

Moisture idx (CMI)

0,00

Runoff

692mm/an

PET

915mm

AET

690mm

Mean slope

2,2°

Water table

96cm

Forest

Crops

79%

Urban

Protected

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)