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28 Δεκ 2021 · The National Map is a collection of free, nationally-consistent geographic datasets that describe the landscape of the United States and its territories. Included in The National Map are the latest elevation data from the 3D Elevation Program (3DEP) , surface water data from the National Hydrography Datasets (NHD) , and place name data from the ...
3 Νοε 2022 · Included in The National Map are the latest elevation data from the 3D Elevation Program (3DEP), surface water data from the National Hydrography Datasets (NHD), and place name data from the Geographic Names Information System (GNIS).
The most current map of each area is available from The National Map. TopoView shows the many and varied older maps of each area, and so is especially useful for historical purposes—for example, the names of some natural and cultural features have changed over time, and the historical names can be found on many of these topographic maps.
Click on a map to view its topography, its elevation and its terrain. The topography of the United States is characterized by diverse and dynamic landscapes that vary widely across the country. In the east, rolling hills and low mountains transition into the Appalachian Mountains, featuring peaks that generally reach around 6,684 feet.
Click on the map to display elevation. The topography of the United States is characterized by diverse and dynamic landscapes that vary widely across the country. In the east, rolling hills and low mountains transition into the Appalachian Mountains, featuring peaks that generally reach around 6,684 feet.
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The National Map is easily accessible for display on the Web through such products as topographic maps and services and as downloadable data. The geographic information available from The National Map includes boundaries, elevation, geographic names, hydrography, land cover, orthoimagery, structures, and transportation.
