Time series of river-flow observations at Ponte Bacchello (coordinates 657270 E 4957140 N, WGS84 UTM 32 N; elevation 21.5 m asl) along Secchia River (Po River Valley, northern Italy). Recording time step 1 h. Unit of measure m³/s. Starting from January 1923 to December 1981. Data collected by Servizio Idrografico Italiano (the former Italian hydrographic agency), by converting water stage observations into flow discharges by using a flow rating curve. Data were collected during the routinely monitoring of river-flows conducted by the Italian hydrographic agency. Only flood events are included, while baseflow periods are omitted.