Article · Wikipedia archive · Last revised Jun 26, 2026

Terdoppio

The Terdoppio is a river of Piedmont and Lombardy. 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 until it merges with the Po River.

Last revised
Jun 26, 2026
Read time
≈ 1 min
Length
164 w
Citations
1
Source
Terdoppio
The torrente Terdoppio at Tromello
Map
Location
CountryItaly
Physical characteristics
Source 
 • locationPiedmontese Prealps
Mouth 
 • location
Ticino; Po, near Zinasco
 • coordinates
45°06′30″N 9°04′37″E / 45.1082°N 9.0770°E / 45.1082; 9.0770
Length86 km (53 mi)1
Basin size
515 km2 (199 sq mi)
Discharge 
 • average3.7 m3/s (130 cu ft/s)
Basin features
Progression PoAdriatic Sea

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 mi2).

References

References

  1. 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)