National Hydrography Dataset
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NHD Home « The Nation Needs The National Map The Nation Needs The National MapThe National Map provides the nation with access to basic geographic information describing the landscape of the United States and its territories. It has many uses ranging from recreation to scientific analysis to emergency response. The National Map is easily accessible for display on the Web, printed products, and as downloadable data. The geographic information available from The National Map consists of terrain elevations, aerial imagery, hydrography, transportation, boundaries, structures, geographic names, and land cover. Other types of geographic information also can be added to create specific types of maps. |