The Oso (or Osu) is a small coastal river in the southeast of the department of

Corse-du-Sud Corse-du-Sud (; co, link=no, Corsica suttana , or ; en, Southern Corsica) is (as of 2019) an administrative department of France, consisting of the southern part of the island of Corsica. The corresponding departmental territorial collect ...

, Corsica, France.

Course

The Oso is long. It crosses the communes of

Lecci Lecci is a commune in the Corse-du-Sud department of France on the island of Corsica. Its name comes from the Italian word for Holly Oak, which was an important resource for many years. Population Sights * Torra di San Benedettu * Torra ...

Porto-Vecchio Porto-Vecchio (, ; it, Porto Vecchio or ; co, Portivechju or ) is a commune in the French department of Corse-du-Sud, on the island of Corsica. Porto-Vecchio is a medium-sized port city placed on a good harbor, the southernmost of the mars ...

San-Gavino-di-Carbini San-Gavino-di-Carbini is a commune in the Corse-du-Sud department of France on the island of Corsica. Population See also *Communes of the Corse-du-Sud department An intentional community is a voluntary residential community which is d ...

and

Zonza Zonza () is a commune in the Corse-du-Sud department of France on the island of Corsica. Geography Zonza is located in the mountain chain of Barocagio-Marghese which extends to the south of the Incudine massif. This mountainous area extends 2 ...

. The Oso rises to the southwest of the Monte Calva. The source is in the territorial forest of L'Ospedale at an altitude of about northeast of the Punta di u Diamante. In its upper section the stream is called the Ruisseau de Piscia di Ghjaddu. A waterfall on this section is one of the regional tourist attractions. It flows southwest, then southeast, and receives the Ruisseau de Palavesani from the right, which drains the

Ospedale Reservoir The Ospedale Reservoir (french: Réservoir de l'Ospedale or Lac de l'Ospedale) is a reservoir in the Corse-du-Sud department of France on the island of Corsica. It holds drinking water for the southeast of the island, including Porto-Vecchio. It is ...

. It then flows east and then south, then turns west to enter Stagnolu Bay to the west of Saint-Cyprien. There are beautiful natural pools for swimming in the mountainous section and in the plains.

Hydrology

Measurements of the river flow were taken at the Lecci station from 1968 to 1980. The watershed above this station covers . Annual precipitation was calculated as . The average flow of water throughout the year was .

Tributaries

The following streams (''ruisseaux'') are tributaries of the Oso (ordered by length) and sub-tributaries: * Sant'Antonaccio ** Filasca * Poggi Alti * Conca * Marginicciu ** Chiustracciu * Palavesani * Tresigna * Fenaja * Orditoju

Notes

Sources

* * * * {{DEFAULTSORT:Oso Rivers of Corse-du-Sud Rivers of France Coastal basins of the Tyrrhenian Sea in Corsica