Montreal Lake is a lake in the north-central part of Canadian province of Saskatchewan. It is the source of the Montreal River and is located between Highways 2 and 969. Prince Albert National Park is to the west and Clarence-Steepbank Lakes Provincial Park is to the east. Communities on the lake include Montreal Lake, Timber Bay, and Mo…Montreal Lake is a lake in the north-central part of Canadian province of Saskatchewan. It is the source of the Montreal River and is located between Highways 2 and 969. Prince Albert National Park is to the west and Clarence-Steepbank Lakes Provincial Park is to the east. Communities on the lake include Montreal Lake, Timber Bay, and Molanosa.