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Concept
Trebbia
Summary
The Trebbia (stressed Trèbbia; Trebia) is a river predominantly of Liguria and Emilia Romagna in northern Italy. It is one of the four main right-bank tributaries of the river Po, the other three being the Tanaro, the Secchia and the Panaro.
Along its eastern banks in 218 BC was fought one of the battles of the Second Punic War: the Battle of Trebbia, where Hannibal defeated a Roman consular army.
The drainage basin is divided among Emilia Romagna, , Liguria, , and Lombardy, . Its principal tributaries are the torrents Aveto and Perino (from the right) and the torrent Boreca (from the left).
The source of the river, the Trebbia river spring, is in the Ligurian Apennines on the south slopes of Monte Prelà, to the south of Monte Antola in the comune of Torriglia, Province of Genoa. Monte Prelà, high, is part of the Antola massif.
The spring is not on the peak but is at roughly . Across a small ridge to the west, on which sits Torriglia, and slightly further downslope is the source of the Scrivia river. Over a ridge to the northeast is the Brugneto reservoir, water supply for Genoa. The reservoir was created in 1959 by damming Brugneto stream, which formerly joined its waters to the Trebbia, but now only does so when the reservoir is full. A ridge running north from Prelà connects to Monte Druso, then to Monte Cremado, and finally to Monte Antola at . From its peak on a clear day can be seen Genoa, Corsica, the Tuscan Archipelago and the Alps.
From its source the river flows towards north-east for until it reaches the Po just to the west of Piacenza. The Alta Val Trebbia ("High Trebbia Valley") includes the valley down to Bobbio. It straddles eight comuni of the Province of Genoa: Torriglia, Rondanina, Propata, Fascia, Montebruno, Rovegno, Fontanigorda and Gorreto. Each of these contains numerous hamlets, some on the river, most on the slopes. Gorreto is on the Ligurian side of the border with Piacenza province.
Past Gorreto the Trebbia flows under a few mountain villages arriving at the next town, Ottone.
Official source
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