The Swan Lake National Wildlife Refuge is a 10,795-acre park established in 1937 and located in Chariton County, Missouri, 2 miles of Sumner, Missouri and near the confluence of the Grand and Missouri Rivers.
Swan Lake National Wildlife Refuge is a 10,795-acre (43.69 km) National Wildlife Refuge established in 1937 and located in Chariton County, Missouri, 2 miles (3.2 km) south of the town of Sumner. 
