Cervo (river)

Cervo
The old bridge at Piedicavallo in the Valle del Cervo
Cervo location
Location
CountryItaly: provinces of Biella and Vercelli
Physical characteristics
Source 
  locationLago della Vecchia - Prealpi biellesi (BI)
  elevation1,900 m (6,200 ft)
Mouth 
  location
River Sesia near Quinto Vercellese (VC)
  coordinates
45°22′06″N 8°24′12″E / 45.3682°N 8.4033°E / 45.3682; 8.4033
  elevation
127.5 m (418 ft)
Length65 km (40 mi)
Basin size1,024 km2 (395 sq mi)
Discharge 
  average(mouth) 21.9 m3/s (770 cu ft/s)
Basin features
ProgressionSesiaPoAdriatic Sea
Tributaries 
  leftMologna, Chiobbia, Nelva, Strona di Mosso, Ostola, Guarabione, Rovasenda, Marchiazza
  rightIrogna, Pragnetta, Oropa, Roggia Drumma, Roggia Ottina, Elvo

The Cervo (Piedmontese: Sar or Serv) is a 65-kilometre (40 mi) torrent (a form of seasonally intermittent stream) in the Piedmont region of north-west Italy. It is the principal tributary of the river Sesia, which itself is a significant tributary of the Po.