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Title: Santerno  
Author: World Heritage Encyclopedia
Language: English
Subject: List of rivers of Italy, Spring 1945 offensive in Italy, Reno (river), Emilia (region of Italy), Dudley Russell
Publisher: World Heritage Encyclopedia


The Santerno river
Origin Tuscan Apennines, Italy
Mouth Reno River
Basin countries Italy
Length 103 km (64 mi)
Avg. discharge 16 m3/s (570 cu ft/s)
Basin area about 700 km2 (270 sq mi)

The Santerno is a river of Romagna,[1] in northern Italy, the major tributary of the Reno River. In Roman times, it was known as the Vatrenus (small Renus), although, in the Tabula Peutingeriana, it was already identified as the Santernus.

It rises near the Casalfiumanese, and, once in the Pianura Padana (the Po River's valley), Imola. Then it empties into the Reno, 7 kilometres (4 mi) from Bastia.

It is probable that, in ancient times, the river flowed eastward from Bagnacavallo, as confirmed be the existence of a frazione of Ravenna called Santerno. In those days, after Imola, the river divided into two branches, one moving northeast toward Ravenna, the other continuing northward to join the Po. The Ravenna branch disappeared, most likely in the eighth century.

Once the late course of the river was modified, and protective measures were taken in the 1880s, the Santerno was famous for its serious floods. Fourteen were recorded between 1679 and 1778.


  1. ^ Although its first kilometers are geographically in the Tuscany region.

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