The Cullasaja River is a short river that flows from Lake Sequoyah which is fed by Mirror Lake and other creeks and streams originating on the western side of the demarcation of two watersheds of what?
Cullasaja River: The Cullasaja River is a short river located entirely in Macon County, North Carolina. Cullasaja River:  It flows from Lake Sequoyah, which is fed by Mirror Lake and other creeks and streams originating on the western side of the Eastern Continental Divide, which runs through the east side of Highlands. Eastern Continental Divide: The Eastern Continental Divide (ECD) or Appalachian Divide or Eastern Divide, in conjunction with other continental divides of North America, demarcates two watersheds of the Atlantic Ocean: the Gulf of Mexico watershed and the Atlantic Seaboard watershed.
the Atlantic Ocean