In "Montecoronaro", a "frazione" (an Italian subdivision of a municipality) of Verghereto, the river takes the name of "Savio". The river flows through the communes of Bagno di Romagna and San Piero in Bagno and, after a few kilometres, it forms an artificial reservoir, the "Lago di Quarto", where it is joined, on the right side, by its first important tributary, the stream "Para".