There are over 365 islands in the Essequibo River in Guyana.

the river that separates demerara from essequibo, is the boerasirie river (in guyana)

There are approximately 365 islands in the Essequibo River in Guyana, with many of them being uninhabited and used for agricultural purposes. The largest island is Leguan, followed by Wakenaam and Hog Island.

Acarai Mountains

There are three (3) main rivers in Guyana they are :Essequibo, Demerara & Berbice ..Listed from largest to smallest.