As a tributary of the Orba, the Piota falls within the Po basin.

In the southwest they disappear below recent sediments of the Po basin that are lying discordant on top of them.

The plain was formed by the gradual retreat of the sea from the Po basin and by the detritus deposited by the rivers.

The Gorzente is an Apennine torrent of the Po basin in north-west Italy.

It considers itself a synergy among all the institutions concerned with the preservation and development of the Po basin.

The top of the pass represents both the Italo-German language frontier and the watershed (drainage divide) between the Po basin and the Rhine basin.

Nearly a third of the nation's population lives in the Po basin, producing about 40 percent of Italy's industrial output.

Belonging to the Po basin, it is a left tributary of the Toce which in its turn flows into Lago Maggiore.

About 16 million people - more than a quarter of the Italian population - live in the Po basin, which is also home to 37 per cent of Italy's industry.

The formation of the foreland basins (Po basin and Bavarian basin) goes on with the crust subsiding in these areas.