evidence: The New River (Dutch: Nieuwe Rivier) is a river of South America located in the southeastern region of Guyana. It forms the Western border of the Tigri Area or New River Triangle, a disputed territory that is claimed by both Guyana and Suriname.[1] In 1965, to bolster this territorial claim, the Surinamese government issued a decree to begin referring to the river as the Upper Corantyne River in Suriname.[2] The river rises in the Acarai Mountains and flows, together with the Coeroeni River, to the Courantyne River.[1] The Oronoque River is a major tributary of the New River and within the Tigri Area. It was the location of a skirmish between Guyana Police Force and a Surinamese labor camp, 15 December 1967.[3] [...] - ^ "Starnieuws - Een halve eeuw Tigri". www.starnieuws.com. Retrieved 2021-01-19.