|Provinces||San José de Ocoa, Peravia, Azua|
|Municipalities||San José de Ocoa, Baní, Las Charcas|
|- left||El Canal, Arroyo Parra|
|Cities||San José de Ocoa, Sabana Buey, Villa Fundación|
|- location||La Chorreosa, Valle Nuevo, Dominican Republic|
|- elevation||2,270 m (7,448 ft)|
|- elevation||0 m (0 ft)|
|Length||68 km (42 mi)|
|Basin||745 km² (288 sq mi)|
|- average||4.25 m³/s (150 cu ft/s)|
The source of the Ocoa is at the La Chorreosa mountain (also known as La Chorriosa), on the eastern side of Valle Nuevo (Cordillera Central). It flows through the San José de Ocoa province and then form part of the limits between the Azua and Peravia provinces.
It ends at the eastern side of Ocoa Bay, on the Caribbean Sea.
The city of San José de Ocoa is the most important city near the river. Other towns are Las Carreras, Sabana Buey and Villa Fundación, in the Peravia province, and Palmar de Ocoa in the Azua province, near its mouth. The water of the river is used for irrigation in those towns; it is not used for the houses because it has too much solid materials because mountains have very few trees.
On April 1849, there was an important battle (the Battle of Las Carreras) here during the Dominican-Haitian War; the fight was on the western side of the river in Las Carreras, a place at about 20 km from the mouth. The Dominican army won the battle against the Haitian army.
- De la Fuente, Santiago (1976). Geografía Dominicana (in Spanish). Santo Domingo: Editora Colegial Quisqueyana. p. 134.
- Rodríguez, Cayetano Armando (1976). Geografía de la Isla de Santo Domingo y Reseña de las Demás Antillas, Second Edition (in Spanish). Santo Domingo: Sociedad Dominicana de Geografía, Vol. XI. p. 399.
- González, Geraldino (1992). Ríos y Arroyos de la República Dominicana (in Spanish). Santo Domingo: Editora Educativa Dominicana. p. 42.