Burntside Lake is a 7,139-acre lake, located 3 miles northwest of Ely, Minnesota, in Saint Louis County, Minnesota. Its western boundary adjoins the Boundary Waters Canoe Area Wilderness on Tamarack Creek.
Location: Morse Township / Slim Lake, Saint Louis County, near Ely, Minnesota
Primary inflows: Tamarack Creek, Coo Lake, Crab Lake, Slim Lake, Hanson Lake, Chant Lake, Everett Lake (via Twin Lakes and Dead River), Minister Lake
Primary outflows: Burntside River
Basin countries: United States
Surface area: 7,139 acres (2,889 ha)
Max. depth: 126 ft (38 m)
Surface elevation: 1,371 ft (418 m)