The Serio (Lombard: Sère) is an Italian river that flows entirely within Lombardy, crossing the provinces of Bergamo and Cremona. It is long and flows into the Adda at Bocca di Serio south of Crema. Its valley is known as the Val Seriana. References External links Rivers of Italy Rivers of Lombardy Rivers of the Province of Bergamo Rivers of the Province of Cremona