The Mahury is an extended

estuary An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environment ...

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 ...

southeast of

Cayenne Cayenne (; ; gcr, Kayenn) is the capital city of French Guiana, an overseas region and Overseas department, department of France located in South America. The city stands on a former island at the mouth of the Cayenne River on the Atlantic Oc ...

. It reaches inland from the

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...

,Google Maps - Mahury
/ref> where it becomes known as the

Oyak Ordu Yardımlaşma Kurumu (OYAK) (''lit. Military Mutual Aid Institution''), is a Turkish charity and pension fund with around 363,000 members and owner of Renault (Oyak). The OYAK Holding Investment Subsidiary Group is one of the largest indust ...

. Including its source rivers Comté and Oyak, it is long.

References

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