Platani known in ancient times as Alico (Halykus) is a river in southern Sicily
Sicily is a region of Italy, and is the largest island in the Mediterranean Sea. Along with the surrounding minor islands, it constitutes an autonomous region of Italy, the Regione Autonoma Siciliana Sicily has a rich and unique culture, especially with regard to the arts, music, literature,...

, Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

. It is the fifth longest in the island after Imera Meridionale, Simeto
The Simeto is a 113 km long river in Sicily, southern Italy. It is the second longest river on the island after the Salso , but the most important in terms of watershed and for the population of the areas near it...

, Belice
The Belice is a river, 77 km in length, of western Sicily. From its main source near Piana degli Albanesi it runs south and west for 45.5 km as the Belice Destra until it is joined on the left by its secondary branch, the 42 km Belice Sinistro , which rises on the slopes of Rocca Busambra...

 and Dittaino
The Dittaino is a river of central Sicily which rises in the Heraean Mountains, not far from the modern towns of Gangi and Enna...

, with a course of 103 km, and the third for drainage basin
Drainage basin
A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

 with 1,785 km², after the Simeto and Imera Meridionale. It flows through the provinces of Palermo
Province of Palermo
The Province of Palermo is a province in the autonomous region of Sicily, a major island in Southern Italy. Its capital is the city of Palermo. The Province of Palermo has 82 comuni , 1,239,272 inhabitants, and is 4,992 km² .-External links:...

 and Agrigento
Province of Agrigento
Agrigento is a province in the autonomous island region of Sicily in Italy. It has an area of 3,042 km², and a total population of 454,370...

, marking the boundary between the latter and that of Caltanissetta
Province of Caltanissetta
The Province of Caltanissetta is a province in the southern part of Sicily, Italy...

The river generates at the confluence of Platani di Lercara and Platani di Castronuovo, which, respectively, springs in the comuni
In Italy, the comune is the basic administrative division, and may be properly approximated in casual speech by the English word township or municipality.-Importance and function:...

of Lercara Friddi
Lercara Friddi
Lercara Friddi is a comune in the Province of Palermo in the Italian region Sicily, located about 45 km southeast of Palermo....

 (under the Pizzo Lanzone mountain) and Santo Stefano Quisquina
Santo Stefano Quisquina
Santo Stefano Quisquina is a comune in the Province of Agrigento in the Italian region Sicily, located about 60 km south of Palermo and about 35 km north of Agrigento...

 (between the Serra della Moneta and Pizzo della Rondine mountains). From the confluence to the mouth it runs for c. 83 km; including the branch of Castronuovo the total length is 103 km. Along its course the Platani receives the waters of several affluents, including the Gallo d'Oro, Turvoli, Vallone Morella, Vallone Tumarrano and Vallone di Aragona.

The river flows in the Strait of Sicily
Strait of Sicily
The Strait of Sicily is the strait between Sicily and Tunisia. It is about wide and divides the Tyrrhenian Sea and the western Mediterranean Sea from the eastern Mediterranean. Its maximum depth is ....

, near Capo Bianco, on the boundary of the comuni of Ribera and Cattolica Eraclea
Cattolica Eraclea
Cattolica Eraclea is a comune in the Province of Agrigento in the Italian region Sicily, located about 80 km south of Palermo and about 20 km northwest of Agrigento nearby the Platani river valley....

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