Lake Oganj is a body of water in eastern Moria. It is bordered to the north by Beograd Hold, to the east by Vrbas, and to the southwest by Rathkin. The Ada River allows water to flow from the lake into the ocean. A canal allows water from the Ääpetmöy Vau River to flow into the lake. Another canal allows water to flow out of the lake into the Serpent River.