Statistics
- President Herbert Hoover authorized Isle Royale National Park's creation in 1931.
-99% of Isle Royale National Park is designated as Natural Wilderness Area.
-Isle Royale National Park is the only national park in the state of Michigan.
-In 1940 there were 2,962 visitors to Isle Royale National Park. In 2012 there were 16,663 visitors.
-Isle Royale National Park is located on Lake Superior, which is the largest freshwater lake in the world.
-In 1940 President Franklin D. Roosevelt formally established Isle Royale National Park by signing it into legislation.