- Santerno
Infobox River | river_name = Santerno
caption = The Santerno river
origin = TuscanApennines ,Italy
mouth =Reno River
basin_countries =Italy
length = 27 km
elevation =
discharge = 16 m³/s
watershed = c. 700 km² The Santerno is a river ofRomagna [Although its first kilometers are geographically in theTuscany region.] , northernItaly , the major tributary of theReno River . In Roman times it was known as "Vatrenus" (small "Renus"), although in theTabula Peutingeriana is already mentioned as "Santernus".It rises near the
Futa Pass , at 1,222 m of elevation, in theApennines ridges facing the plateau ofFirenzuola . After Firenzuola it flows inCastel del Rio , where it is crossed by a famous medieval bridge "Ponte degliAlidosi ",Fontanelice ,Borgo Tossignano ,Casalfiumanese and, once in thePianura Padana (thePo River 's valley),Imola . Then it flows into the Reno 7 km from the locality of Bastia.It is probable that in ancient times the river flowed East of
Bagnacavallo , as confirmed be the existence of a "frazione " ofRavenna called Santerno. After Imola, the river divided into two branches, one moving north-est towards Ravenna, the other continuing northwards, until joining the Po. The Ravennate branch disappeared most likely in the 8th century.Once the late course of the river was modified and protective measures were taken in the 1880s, the Santerno was famous for its floods (14 registered in 1679-1778).
Footnotes
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