Sinni (river)

Main source Serra della Giumenta (Lucan Apennines)
1,380 m (4,530 ft)
River mouth Gulf of Taranto south of Policoro
0 m (0 ft)
Basin size 1,292 km2 (499 sq mi)
Physical characteristics
Length 94 km (58 mi)

The Sinni (Latin: Siris or Sinis; Greek: Σῖρις or Σίνις) is a 94 km long river in the Basilicata region of southern Italy. In antiquity, the city of Siris lay at its mouth. Near the town of Senise, a dam on the river was built in 1970-1982, the largest in Europe built with earth. In correspondence of it, it forms the Lake Monte Cotugno, one of the largest artificial basins in Italy.

The source of the river is in the Lucan Apennines west of Castelsaraceno and south of Moliterno in the province of Potenza.[1] The river flows south before curving eastward near Monte la Spina. It flows near Latronico before entering the Parco Nazionale dell Pollino. The river is joined by a right tributary near Francavilla in Sinni before flowing into Lago di Monte Cotugna.


The river Siris is mentioned by Lycophron (Alex. 982), as well as by Archilochus (ap. Athen. xii. p. 523); but the former author calls it Σίνις, and its modern name of Sinno would seem to be derived from an ancient period; for we find mention in the Tabula Peutingeriana of a station 4 miles from Heracleia, the name of which is written Semnum, probably a corruption for Ad Simnum or Sinnum. The Siris and Aciris (modern Agri) are mentioned in conjunction by Pliny as well as by Strabo, and are two of the most considerable streams in Lucania. (Plin. iii. 11. s. 15; Strab. vi. p. 264.) The name of the former river is noticed also in connection with the first great battle between Pyrrhus and the Romans, 280 BCE, which was fought upon its banks (Plut. Pyrrh. 16). It has been confounded by Florus and Orosius with the Liri in Campania. (Flor. i. 18. § 7; Oros. iv. 1.)


  1. The Times Comprehensive Atlas of the World (13 ed.). London: Times Books. 2011. p. 76 I2. ISBN 9780007419135.

Coordinates: 40°09′10″N 16°41′30″E / 40.1529°N 16.6917°E / 40.1529; 16.6917

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