The Arno river, which runs through Florence and Pisa, is prone to flooding in spring and fall. Read more at straitstimes.com.

Florence, Pisa on flood alert as heavy rain closes museums and roads - Residents have been evacuated as several major rivers threaten to burst their banks

ROME (AP) — Heavy rains hit the Italian regions of Tuscany and Emilia-Romagna on Friday, pushing the main rivers in the regions above alert levels for flooding. In the central Tuscany region, schools remained closed in several cities, including Florence, where the local administration closed museums, cinemas and theatres.