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The United States holds many areas for the use and enjoyment of the public. These include national parks, national monuments, national forests, wilderness areas, and other areas. For lists of areas, see the following articles: List of National Parks of the United States; List of National Natural Landmarks; List of U.S. National Forests
The largest national park is Wrangell–St. Elias in Alaska: at over 8 million acres (32,375 km 2 ), it is larger than each of the nine smallest states. The next three largest parks are also in Alaska. The smallest park is Gateway Arch National Park, Missouri, at 192.83 acres (0.7804 km 2 ).
Affiliated areas are marked on the lists below. National Park System units are found in all 50 states, the District of Columbia, and the U.S. territories of Guam, American Samoa, the U.S. Virgin Islands, and Puerto Rico. The territory of the Northern Mariana Islands has an affiliated area but not an official NPS unit.
The protected areas of the United States are managed by an array of different federal, state, tribal and local level authorities and receive widely varying levels of protection. Some areas are managed as wilderness, while others are operated with acceptable commercial exploitation. As of 2022, the 42,826 protected areas covered 1,235,486 km 2 ...
Map of national forests and national grasslands of the United States. The United States has 154 protected areas known as national forests, covering 188,336,179 acres (762,169 km 2; 294,275 sq mi). National forests are managed by the U.S. Forest Service, an agency of the U.S. Department of Agriculture.
There are boreal forests in Alaska. [4] Forests in Hawaii and the U.S. territories are tropical. [5] The most heavily forested regions of the U.S. are Maine, New Hampshire, American Samoa, the Northern Mariana Islands and West Virginia; the least heavily forested regions are North Dakota, Nebraska, and South Dakota.
The United States is part of North America. The environment of the United States comprises diverse biotas, climates, and geologies. This diversity leads to a number of different distinct regions and geographies in which human communities live. This includes a rich variety of species of animals, fungi, plants and other organisms.
National preserve. Entrance sign to Mojave National Preserve. There are 21 protected areas of the United States designated as national preserves. They were established by an act of Congress to protect areas that have resources often associated with national parks but where certain natural resource -extractive activities such as hunting and ...