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This is a list of largest reservoirs in the United States, including all artificial lakes with a capacity greater than or equal to 1,000,000 acre-feet (1.2 km 3). Figures given are for maximum storage capacity (flood pool) of reservoirs, not regular storage volume (conservation pool).
The nearly 8100 major dams in the United States in 2006. The National Inventory of Dams defines a major dam as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3).
Fourteen national parks are designated UNESCO World Heritage Sites (WHS), [6] and 21 national parks are named UNESCO Biosphere Reserves (BR), [7] with eight national parks in both programs. Thirty states have national parks, as do the territories of American Samoa and the U.S. Virgin Islands.
National forests listed in this column in small text are constituent national forests managed by, but not included in the name of, the named national forest in normal text. To reach the figure of 154 national forests, count hyphenated names as two forests, with the exception of Manti–La Sal, which is the official name of one forest.
Some of these are little more than picnic areas or playgrounds; however, others are extensive nature reserves. South Mountain Park in Phoenix, Arizona , for example, is called the largest city park in the United States; it spans 25 sq mi (65 km 2 ) and contains 58 mi (93 km) of trails.
If there is no defined long-term goal for conservation and ecological recovery and extraction of marine resources occurs, a region is not considered a marine protected area. [ 2 ] As of June 2019 there are 14,830 marine protected areas with a total area of 27,495,595 km 2 (10,616,109 sq mi) representing 7.59% of the ocean.
4 North and Central America. Toggle North and Central America subsection. 4.1 Belize. 4.2 Canada. 4.3 Costa Rica. ... The following is a list of reservoirs and dams, ...
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 mining may be permitted, provided their natural values are preserved.