| Oso | |
|---|---|
 | |
   | |
| Native name | Osu (Corsican) |
| Location | |
| Country | France |
| Region | Corsica |
| Department | Corse-du-Sud |
| Physical characteristics | |
| Mouth | Tyrrhenian Sea |
• coordinates | 41°37′43″N9°18′49″E / 41.6286°N 9.3137°E Coordinates: 41°37′43″N9°18′49″E / 41.6286°N 9.3137°E |
| Length | 23.27 kilometres (14.46 mi) |
The Oso (or Osu) is a small coastal river in the southeast of the department of Corse-du-Sud, Corsica, France.
The Oso is 23.27 kilometres (14.46 mi) long. It crosses the communes of Lecci, Porto-Vecchio, San-Gavino-di-Carbini and Zonza. [1] The Oso rises to the southwest of the 1,381 metres (4,531 ft) Monte Calva. [2] The source is in the territorial forest of L'Ospedale at an altitude of 980 metres (3,220 ft) about 1 kilometre (0.62 mi) northeast of the 1,227 metres (4,026 ft) Punta di u Diamante. [3]
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. [3] It flows southwest, then southeast, and receives the Ruisseau de Palavesani from the right, which drains the Ospedale Reservoir. It then flows east and then south, then turns west to enter Stagnolu Bay to the west of Saint-Cyprien. [2] There are beautiful natural pools for swimming in the mountainous section and in the plains. [3]
Measurements of the river flow were taken at the Lecci station from 1968 to 1980. The watershed above this station covers 46.2 square kilometres (17.8 sq mi). Annual precipitation was calculated as 660 millimetres (26 in). The average flow of water throughout the year was 0.962 cubic metres per second (34.0 cu ft/s). [4]
| Month | Flow |
|---|---|
| Jan | 1.950 |
| Feb | 2.110 |
| Mar | 1.690 |
| Apr | 1.390 |
| May | 0.845 |
| Jun | 0.361 |
| Jul | 0.126 |
| Aug | 0.246 |
| Sep | 0.274 |
| Oct | 0.483 |
| Nov | 0.841 |
| Dec | 1.310 |
The following streams (ruisseaux) are tributaries of the Oso (ordered by length) and sub-tributaries: [1]
Rivers of the Corse-du-Sud department  | ||
|---|---|---|
Clockwise: east to south to west to north | ||
| East coast |  | |
| West coast | ||
| Tributaries | ||
| ||
The Abatesco is a French coastal river which flows through the Haute-Corse department and empties into the Tyrrhenian Sea.
The Luri is a coastal stream in the department of Haute-Corse, Corsica, France. It flows across the Cap Corse peninsula to the Tyrrhenian Sea.
The Figarella is a small coastal river in the northwest of the department of Haute-Corse, Corsica, France.
The Sisco is a small coastal stream in the department of Haute-Corse, Corsica, France. It enters the Tyrrhenian Sea from the east of the Cap Corse peninsula.
The Erco is a stream in the department of Haute-Corse, Corsica, France. It is a tributary of the Golo.
The Ruisseau de Pietracorbara is a coastal stream in the department of Haute-Corse, Corsica, France. It rises in the Monte Stello massif on Cap Corse and flows into the Tyrrhenian Sea on the east of the island.
The Ospedale Reservoir 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 surrounded by a forest that has been designated a Zone naturelle d'intérêt écologique, faunistique et floristique (ZNIEFF).
The Baraci is a small coastal river in the southwest of the department of Corse-du-Sud, Corsica, France.
The Chiuvone is a small river in the department of Corse-du-Sud, Corsica, France. It is a tributary of the river Rizzanese. There is a small hydroelectric power dam on the river.
The Butturacci is a coastal stream in the department of Corse-du-Sud, Corsica, France.
The Francolu is a coastal stream in the southeast of the department of Corse-du-Sud, Corsica, France.
The Ortolo is a coastal river in the southwest of the department of Corse-du-Sud, Corsica, France. It is dammed to store water for irrigation.
The Sagone is a coastal river in the northwest of the department of Corse-du-Sud, Corsica, France.
The Canella is a coastal stream in the south of the department of Corse-du-Sud, Corsica, France. It has ecologically interesting wetlands at its mouth.
The Lava is a coastal stream in the west of the department of Corse-du-Sud, Corsica, France.
The Liscu ) is a small coastal river in the north of the department of Haute-Corse, Corsica, France.
The Poggiolo is a small coastal stream in the department of Haute-Corse, Corsica, France. It enters the Tyrrhenian Sea from the east of the Cap Corse peninsula.
The Chiola is a small coastal stream in the department of Haute-Corse, Corsica, France. It enters the Tyrrhenian Sea from the east of the island.
The Olmeta is a small coastal stream in the department of Haute-Corse, Corsica, France. It enters the Mediterranean Sea from the west of the Cap Corse peninsula.
The Saltaruccio is a stream in the department of Haute-Corse, Corsica, France. It is a tributary of the Fiumorbo.