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A peak or projection from the top of a hill or mountain, or any rounded protrusion of land, especially a small but prominent or isolated hill with steep sides; a boulder or an area of resistant rock protruding from the side of a hill or mountain. The term is used primarily in the southern United States. [5] knoll.
An enlargeable map of the 124 combined statistical areas (CSAs) of the United States as of 2006. A core-based statistical area ( CBSA) is a U.S. geographic area defined by the Office of Management and Budget (OMB). It contains a large population nucleus, or urban area, and adjacent communities that have a high degree of integration with that ...
Catchment areas in terms of a geographical location is a low-lying region in which water from higher areas collect into a single water body. The sources of water collected can vary from rainwater to melted snow. Catchment areas may drain their water into other lower lying basins or into a single place, usually a lake, in the case of a closed ...
Geography (from Ancient Greek γεωγραφία geōgraphía; combining gê 'Earth' and gráphō 'write') is the study of the lands, features, inhabitants, and phenomena of Earth. [1] Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities —not merely where objects are, but also ...
Region. In geography, regions, otherwise referred to as areas, zones, lands or territories, are portions of the Earth's surface that are broadly divided by physical characteristics ( physical geography ), human impact characteristics ( human geography ), and the interaction of humanity and the environment ( environmental geography ).
A geographic information system ( GIS) consists of integrated computer hardware and software that store, manage, analyze, edit, output, and visualize geographic data. [1] [2] Much of this often happens within a spatial database, however, this is not essential to meet the definition of a GIS. [1] In a broader sense, one may consider such a ...
The Washington metropolitan area, also referred to as the DC area, Greater Washington, the National Capital Region, or locally as the DMV (short for District of Columbia, Maryland, and Virginia ), is the metropolitan area centered around Washington, D.C., the federal capital of the United States. The metropolitan area includes all of Washington ...
Website. www .usgs .gov. The United States Geological Survey ( USGS ), founded as the Geological Survey, is an agency of the United States government whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the ...