A tributary is a stream or river which flows into a Mainstem river. A tributary does not flow directly into a sea. Tributaries and the mainstem river serve to drain the surrounding drainage basin of its surface water and groundwater by leading the water out into an ocean or some other large body of water.... of the Po River
Po River
The Po is a river that flows 652 km eastward across northern Italy, from Monviso to the Adriatic Sea near Venice. It has a drainage area of 71,000 km? and is the longest river in Italy.... , in northern Italy
Italy
Italy , officially the Italian Republic , is a country located on the Italian Peninsula in Southern Europe and on the two largest islands in the Mediterranean Sea, Sicily and Sardinia.... . It runs through Liguria
Liguria
Liguria is a coastal Regions of Italy of north-western Italy, the third smallest of the Italian regions. Its capital is Genoa. It is a popular region with tourists for its beautiful beaches, picturesque little towns, and food.... , Piedmont
Piedmont
Piedmont is one of the 20 Regions of Italy. It has an area of 25,399 km? and a population of about 4.4 million. The capital is Turin. The main local dialect is Piedmontese.... , and Lombardy
Lombardy
Lombardy is one of the 20 regions of Italy. The capital is Milan. One-sixth of Italy's population lives in Lombardy and about one fifth of Italy's GDP is produced in this region.... .
