Erro (river)
| Erro | |
|---|---|
| Location | |
| Country | Italy | 
| Physical characteristics | |
| Source | |
| • location | Monte Ermetta | 
| Mouth | |
|  • location | Bormida at Terzo (AL) | 
|  • coordinates | 44°39′52″N 8°25′47″E / 44.6645°N 8.4297°E | 
|  • elevation | 222 m (728 ft) | 
| Length | 46.5 km (28.9 mi) | 
| Basin size | 246.9 km2 (95.3 sq mi) | 
| Discharge | |
| • average | 4.6 m3/s (160 cu ft/s) | 
| Basin features | |
| Progression | Bormida→ Tanaro→ Po→ Adriatic Sea | 
The Erro (in Piedmontese Er) is a 46-kilometre (29 mi) torrent of north-west Italy, a right tributary of the Bormida.