Saganaga Lake is a large lake on the Minnesota – Ontario international border. Most of the lake is protected by the Boundary Waters Canoe Area Wilderness in the United States and by Quetico Provincial Park and La Verendrye Provincial Park in Canada.
Saganaga Lake is situated along the Minnesota – Ontario boundary. A substantial portion of the lake falls under protection from the Boundary Waters Canoe Area Wilderness in the U.S. and Quetico Provincial Park and La Verendrye Provincial Park in Canada.