The area of Helena National Forest is 3,949.732 square kilometers.
Helena National Forest was created in 1907.
There is a Glacier National Park which extends to the border of Canada.And a Helena National Forest which surrounds Helena.Regrettably, due to climate change, the glaciers have all but melted away.
The area of St Helena Island National Park is 750,000.0 square meters.
The area of Plumas National Forest is 4,451.542 square kilometers.
The area of Cleveland National Forest is 2,000,000.0 square meters.
The area of Modoc National Forest is 6,695.087 square kilometers.
The area of Chippewa National Forest is 6,474.97 square kilometers.
The area of Olympic National Forest is 2,564.4 square kilometers.
The area of Stanislaus National Forest is 3,634.478 square kilometers.
The area of Custer National Forest is 5,173.012 square kilometers.
The area of Umatilla National Forest is 7,284.342 square kilometers.
The area of Bitterroot National Forest is 6,422.644 square kilometers.