Swan Lake is a lake located east of Flathead Lake and the town of Bigfork, Montana. The Swan River comes from the south and fills the lake. The lake is a lot like Moyie Lake in southern British Columbia. It is a narrow, small, and twisty lake that is hard to navigate. There is a small divide that separates the Swan River Valley from the Clearwater River Valley. The Clearwater River flows south through a series of lakes, including Seely Lake and empties into the Blackfoot River. The two valleys are known locally as the Seely/Swan. Swan Lake runs parallel to Montana Highway 83.