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U.S. Census Bureau regions and divisions. Since 1950, the United States Census Bureau defines four statistical regions, with nine divisions. [1] [2] The Census Bureau region definition is "widely used... for data collection and analysis", [3] and is the most commonly used classification system.
List of longest rivers of the United States (by main stem) List of longest rivers of the United States by state; List of rivers of the United States by discharge; List of National Wild and Scenic Rivers; List of river borders of U.S. states; List of rivers of U.S. insular areas; List of rivers of the Americas by coastline
The physiographic regions of the contiguous United States comprise 8 divisions, 25 provinces, and 85 sections. [1] The system dates to Nevin Fenneman's report Physiographic Divisions of the United States, published in 1916. [2] [3] The map was updated and republished by the Association of American Geographers in 1928. [4]
[citation needed] In the United States, there are at least six exceptions, however, where the boundary is one bank of the river rather than the thread of the channel: The boundary between New Hampshire and Vermont is the west bank of the Connecticut River. This was established as the eastern boundary of New York by a grant of King Charles II in ...
Map of Central America. The water in rivers in Central America flows to either the Atlantic Ocean or Pacific Ocean. The Río Coco, locally known as the Wanks, runs along the border with Honduras and is the longest river flowing totally within Central America. The second longest river in Central America is the Patuca River. [7] [8]
A water resource region is the first level of classification used by the United States Geological Survey to divide and sub-divide the United States into successively smaller hydrologic units as part of the U.S. hydrologic unit system. This first level of classification divides the United States into 21 major geographic areas, or regions.
The Atlantic Seaboard basin in eastern North America drains to the Atlantic Ocean; the Great Lakes-St. Lawrence basin in central and eastern North America drains to the Gulf of St. Lawrence on the Atlantic Ocean or to the Labrador Sea; the Gulf of Mexico basin in the southern United States drains to the Gulf of Mexico, a basin of the Atlantic ...
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