The Yaloupi or Yaroupi is a river in

French Guiana French Guiana ( or ; french: link=no, Guyane ; gcr, label=French Guianese Creole, Lagwiyann ) is an overseas departments and regions of France, overseas department/region and single territorial collectivity of France on the northern Atlantic ...

. It rises in the south of the country, flowing northeast until it reaches the river

Oyapock The Oyapock or Oiapoque (; ; ) is a long river in South America that forms most of the border between the French overseas department of French Guiana and the Brazilian state of Amapá. Course The Oyapock runs through the Guianan moist fores ...

near the temporary village of Oscar.Atlas illustré de la Guyane
p. 20 It is long.

References

Rivers of French Guiana Rivers of France {{FrenchGuiana-river-stub