Adda (river)

The Adda is a river in northern Italy. It is a left tributary of the Po. The river is 313 km (194 mi) long.^[2]

Adda
The river Adda in Tirano
Location
Countries	Italy
Physical characteristics
Source
- location	Val Alpisella
- elevation	about 2,122 m (7,000 ft)
Mouth	Po
Length	80 km (50 mi)
Basin size	7,927 km2 (3,061 sq mi)[1]

The river starts in the Alps near the border with Switzerland and flows south through a valley called Valtellina from Bormio to Tirano. It then turns west past che city of Sondrio and enters into the northern end of Lake Como.^[2]

It leaves the Lake Como in Lecco and flows southbound through the northern part of the Po Valley, it forms the boundary between the provinces of Milan and Cremona before joining the Po not far from the city of Cremona.

The lower course of the rivers is navigable.^[2]

Major cities on the Adda are: Bormio, Tirano, Sondrio, Lecco and Lodi. The main tributaries of the Adda are: Brembo, Serio and Mera.