The ancient town and the center of the modern city are in a loop of the
Adige River near
Lake Garda. Because of this position, the areas saw regular floodings until
1956, when the
Mori-Torbole tunnel was constructed, providing 500 cubic meters of discharge from the Adige river to the
Lake Garda in case of flood danger. The tunnel reduced the risk of floodings from once every seventy years to once every two centuries.
