Ticino, Lat. Ticinus, river, 154 mi (248 km) long, rising in Ticino canton, S Switzerland, and flowing generally S through Lago Maggiore into N Italy, joining the Po River below Pavia. In Switzerland, the Ticino is used to generate electricity. It provides irrigation in Italy; the important Cavour irrigation canal branches from the river. The Ticino River was the scene (218 B.C.) of Hannibal's victory over Scipio in the Second Punic War.