| Sieve | |
|---|---|
| Country | Italy |
| Basin features | |
| Main source | near Futa Pass, Apennines, Italy 777 m (2,549 ft) |
| River mouth | Arno River |
| Basin size | 840 km2 (320 sq mi) |
| Physical characteristics | |
| Length | 58 km (36 mi) |
The Sieve is a river in Italy. It is a tributary of the Arno River, into which it flows at Pontassieve after a course of 62 km. The Sieve rises in the Tuscan-Emilian Apennines, near the Futa Pass, at 930 m of elevation.
The territory in which it flows is known in Italian as Valdisieve. In Italian language, the name "Sieve" is feminine, and is therefore referred to as La Sieve.