The
Liro is a
torrente, or stream, in the north
Italian Province of Como. The drainage basin is triangular in shape; its principal source lies on Monte Marmontana near the
Swiss border and flows through the Valle San Iorio (also Jorio). The second source lies to the northeast on the slopes of Pizzo Martello and forms the Valle del Dosso. Near
Dosso del Liro the stream receives the waters of the
torrente Ronzone, which flows from Monte Duria through the Val d’Inferno. The Liro enters
Lake Como at
Gravedona.