Largest tributaries
The Bormida (Bormia in Piedmontese language) is a 153 km long river of north-west Italy.
The Bormida rises in Liguria from the Rocca Barbena (close to Colle Scravaion) as Bormida di Millesimo, and flows at first through Liguria and then through Piedmont. After converging with the Bormida di Spigno near Bistagno it joins the Tanaro, of which it is the major tributary, north-east of Alessandria.
