Trasimeno (träzēmā´nō), Lat. Trasimenus, lake, c.50 sq mi (130 sq km), in Umbria, central Italy, W of Perugia. It is also called Lake of Perugia. The shallow circular lake (max. depth 19 ft/6 m) often floods its shores, which are sparsely populated. There is no natural outlet, but a subterranean channel to a tributary of the Tiber was opened in 1898. In 217 BC, lake Trasimeno was the scene of Hannibal's victory over the Romans under Flaminius.
"Trasimeno." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (March 21, 2019). https://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/trasimeno
"Trasimeno." The Columbia Encyclopedia, 6th ed.. . Retrieved March 21, 2019 from Encyclopedia.com: https://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/trasimeno