Rivière· 30 segments

Fiume Sesia

Crosses 5 administrative regions : Alessandria, Biella, Novara, Pavia, Vercelli

rivière

Total length

105km

Max discharge

321,9m³/s

Max Strahler

Segments matched

River geography5 admin regions · 0 communes

Parent watershed

hybas-2080543440168 km²

5 administrative regions crossed (GADM L2)

Vercelli
Piemonte · Italy
46.0 km
in this dpt
Pavia
Lombardia · Italy
8.9 km
in this dpt
Novara
Piemonte · Italy
8.3 km
in this dpt
Alessandria
Piemonte · Italy
1.4 km
in this dpt
Biella
Piemonte · Italy
0.2 km
in this dpt

15 intersecting protected areas

Risaie della Lomellina
IUCN Not Reported
Special Protection Area (Birds Directive)
Fiume Po - tratto vercellese alessandrino
IUCN Not Reported
Special Protection Area (Birds Directive)
Confluenza Po - Sesia - Tanaro
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Monte Fenera
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Sistema delle aree protette della fascia fluviale del Po
IUCN V
Other Protected Natural Regional Areas
Stazioni di Isoetes malinverniana
IUCN Not Reported
Site of Community Importance (Habitats Directive)
Lame del Sesia e Isolone di Oldenico
IUCN Not Reported
Special Protection Area (Birds Directive)
Lame del Sesia e Isolone di Oldenico
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Parco naturale delle Lame del Sesia
IUCN IV
Regional/Provincial Nature Park

6 more protected areassorted by area

Parco naturale del Monte Fenera
IUCN V
Regional/Provincial Nature Park
Lama del Badiotto e Garzaia della Brarola
IUCN Not Reported
Special Protection Area (Birds Directive)
Riserva naturale Garzaia della Cascina Isola
IUCN IV
Regional/Provincial Nature Reserve
Riserva naturale speciale dell' Isolone di Oldenico
IUCN IV
Regional/Provincial Nature Reserve
Riserva naturale speciale del Sacro Monte di Varallo
IUCN V
Regional/Provincial Nature Reserve
Laghetto di Sant'Agostino
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)

1 page = 1 named river (aggregation of 30 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

199 distinct species · 634 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Fiume Sesia : 32 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 92 interactions GloBI sur 4 types (connectance 11.8%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.118

Patrimoniales

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

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

Hydrology (HydroRIVERS v10)