The Coeroeni River is a river in

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...

. It arises in the Tumuc-Humac Mountains, which forms the

drainage divide A drainage divide, water divide, ridgeline, watershed, water parting or height of land is elevated terrain that separates neighboring drainage basins. On rugged land, the divide lies along topographical ridges, and may be in the form of a single ...

between

Pará Pará () is a Federative units of Brazil, state of Brazil, located in northern Brazil and traversed by the lower Amazon River. It borders the Brazilian states of Amapá, Maranhão, Tocantins (state), Tocantins, Mato Grosso, Amazonas (Brazilian st ...

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

, and

Suriname Suriname, officially the Republic of Suriname, is a country in northern South America, also considered as part of the Caribbean and the West Indies. It is a developing country with a Human Development Index, high level of human development; i ...

; from there it flows northward. The river is fed by the Aramatau, Kutari and Sipaliwini River. The Coeroeni goes on to form the border of the disputed

Tigri Area The Tigri Area () or New River Triangle is a forested area in the East Berbice-Corentyne region of Guyana that has been disputed by Suriname since the 19th century. In Suriname, it is seen as an integral part of the Coeroeni Resort located i ...

Guyana Guyana, officially the Co-operative Republic of Guyana, is a country on the northern coast of South America, part of the historic British West Indies. entry "Guyana" Georgetown, Guyana, Georgetown is the capital of Guyana and is also the co ...

and

. It eventually flows into the

Courantyne River The Courantyne River ( ), also known as Corentyne and Corantijn (), is a river in northern South America in Suriname and Guyana. It is the longest List of rivers of Suriname, river in the country and creates the border between Suriname and the Eas ...

, which forms the international boundary between Guyana–Suriname. While there's little dispute of the lower Corentyne marking the division between the two countries, however confusion arose where the river splits to the west as the New River or the east Coeroeni. Which one is deemed the proper upper Corentyne was between the expedition of Robert H. Schomburgk, and later Barrington Brown who found the New River.

Notes

Border rivers Rivers of Guyana Rivers of Suriname Rivers of the Tigri Area International rivers of South America {{Suriname-river-stub