Kennebago Divide stands within the watershed of the upper Androscoggin River, which drains into Merrymeeting Bay, the estuary of the Kennebec River, and then into the Gulf of Maine.
The location of Kennebago Divide is within a watershed that includes the upper Androscoggin River, which eventually drains into Merrymeeting Bay, linking to the Kennebec River's estuary before emptying into the Gulf of Maine.