Location within Po watershed
|Main source||Piedmontese Prealps|
|River mouth||Ticino; Po, near Zinasco|
|Basin size||515 km2 (199 sq mi)|
|Length||86 km (53 mi)|
The Terdoppio is a river of Piedmont and Lombardy (northern Italy). It starts from the Piedmontese Prealps in the area between Lake Orta and Lake Maggiore, and then crosses the province of Novara. Near Cerano, it splits into two different streams: the first joins the Ticino River, while the second flows through the Lomellina (province of Pavia) until it merges with the Po River.
The Terdoppio is 86 kilometres (53 mi) long, with an average discharge of 3.7 cubic metres per second (130 cu ft/s) and a drainage basin of about 515 square kilometres (199 sq mi).
- LINEE GENERALI DI ASSETTO IDROGEOLOGICO E QUADRO DEGLI INTERVENTI BACINO DEL TERDOPPIO, Autorità di bacino del fiume Po; on-line in .pdf: www.adbpo.it (access:January 2015)
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