The West Branch Swift River is a 6.4 miles (10.3 km) tributary of the Swift River

Swift River (Maine)

The Swift River is a river in western Maine. It is a tributary of the Androscoggin River, which flows to the Kennebec River near its mouth at the Atlantic Ocean....

 in western Maine

Maine

Maine is a state in the New England region of the northeastern United States, bordered by the Atlantic Ocean to the east and south, New Hampshire to the west, and the Canadian provinces of Quebec to the northwest and New Brunswick to the northeast. Maine is both the northernmost and easternmost...

. Via the Swift River, it is part of the Androscoggin River

Androscoggin River

The Androscoggin River is a river in the U.S. states of Maine and New Hampshire, in northern New England. It is long and joins the Kennebec River at Merrymeeting Bay in Maine before its water empties into the Gulf of Maine on the Atlantic Ocean. Its drainage basin is in area...

 watershed, flowing to the Kennebec River

Kennebec River

The Kennebec River is a river that is entirely within the U.S. state of Maine. It rises in Moosehead Lake in west-central Maine. The East and West Outlets join at Indian Pond and the river then flows southward...

 and ultimately the Atlantic Ocean

Atlantic Ocean

The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

.

The West Branch rises in a high valley between Elephant Mountain and Old Blue Mountain and flows east into the town of Byron

Byron, Maine

Byron is a town in Oxford County, Maine, United States. The population was 121 at the 2000 census. Home to Coos Canyon on the Swift River, Byron includes the village of Houghton.-History:...

, reaching the Swift River just south of the village of Houghton.