Tanaro

Bodio Lomnago is a comune (municipality) in the province of Varese, in the Italian region of Lombardy. Bodio Lomnago is composed of two villages: Bodio, the biggest one closer to the lake and Lomnago, uphill toward the Monte Rogorella. Both villages have certainly a pre-Roman origin, probably Celtic or Gaulish.

Agra is a town and comune located in the province of Varese, in the Lombardy region of northern Italy.

Gambarana is a comune (municipality) in the Province of Pavia in the Italian region Lombardy, located about 60 km southwest of Milan and about 35 km southwest of Pavia. As of 31 December 2021, it had a population of 199 and an area of 12.0 km².Gambarana borders the following municipalities: Bassignana, Frascarolo, Isola Sant'Antonio, Mede, Pieve del Cairo, Suardi.

Alluvioni Cambiò is a frazione of Alluvioni Piovera in the Province of Alessandria in the Italian region Piedmont, located about 90 kilometres (90 km) east of Turin and about 15 kilometres (9 mi) northeast of Alessandria. The name (alluvione meaning "flood" in Italian) refers to the numerous floods which struck the area, which is nearby the confluence of the Tanaro and Po Rivers and of the Scrivia river.

Alluvioni Piovera is a comune (municipality) in the Province of Alessandria in the Italian region Piedmont. It was established on 1 January 2018 by the merger of the municipalities of Alluvioni Cambiò and Piovera.

Pieve del Cairo is a comune (municipality) in the Province of Pavia in the Italian region of Lombardy, located about 60 km southwest of Milan and about 30 km southwest of Pavia. As of 31 December 2004, it had a population of 2,179 and an area of 25.5 km2.Pieve del Cairo borders the municipalities of Ferrera Erbognone, Galliavola, Gambarana, Isola Sant'Antonio, Mede, Mezzana Bigli, and Villa Biscossi.

Sale is a comune (municipality) in the Province of Alessandria in the Italian region Piedmont, located about 90 kilometres (56 mi) east of Turin and about 15 kilometres (9 mi) northeast of Alessandria. Sale borders the following municipalities: Alessandria, Alluvioni Piovera, Castelnuovo Scrivia, Guazzora, Isola Sant'Antonio, Tortona.

Piovera is a frazione of Alluvioni Piovera in the Province of Alessandria in the Italian region Piedmont, located about 80 kilometres (50 mi) east of Turin and about 11 kilometres (7 mi) northeast of Alessandria.

Rivarone is a comune (municipality) in the Province of Alessandria in the Italian region Piedmont, located about 80 kilometres (50 mi) east of Turin and about 11 kilometres (7 mi) northeast of Alessandria. The municipality has a population of 402 residents based on the 2020 Census. Rivarone borders the following municipalities: Alluvioni Piovera, Bassignana and Montecastello.

Suardi is a comune (municipality) in the Province of Pavia in the Italian region Lombardy, located about 60 km southwest of Milan and about 35 km southwest of Pavia. As of 31 December 2004, it had a population of 692 and an area of 9.8 km².Suardi borders the following municipalities: Bassignana, Frascarolo, Gambarana, Valenza.

Frascarolo is a comune (municipality) in the Province of Pavia in the Italian region Lombardy, located about 60 km southwest of Milan and about 40 km southwest of Pavia. As of 31 December 2004, it had a population of 1,277 and an area of 23.4 km2.Frascarolo borders the following municipalities: Bassignana, Gambarana, Mede, Suardi, Torre Beretti e Castellaro, Valenza.

Mede is a comune (municipality) in the Province of Pavia in the Italian region Lombardy, located about 50 km southwest of Milan and about 35 km southwest of Pavia. As of 31 December 2004, it had a population of 6,993 and an area of 33.4 km2.Mede borders the following municipalities: Frascarolo, Gambarana, Lomello, Pieve del Cairo, Sartirana Lomellina, Semiana, Torre Beretti e Castellaro, Villa Biscossi.