Saganaga Lake is a large glacial border lake between Minnesota and Ontario, with most of its waters protected within the Boundary Waters Canoe Area Wilderness, Quetico Provincial Park, and La Verendrye Provincial Park. Its Ojibwe-derived name means “Lake of Many Islands,” reflecting its island-strewn waters. The lake is the deepest in the Boundary Waters Canoe Area Wilderness, reaching 280 feet, though its deepest point lies outside the BWCA itself, and it covers 13,832 acres. Known for fishing and canoe travel, it also forms the eastern boundary of the historic Hunter Island region and remains a defining part of this protected wilderness landscape.