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3 lis 2022 · 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 ...
Average elevation: 1,014 ft • United States • 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.
US Topo is the current USGS topographic map series for the Nation. These are modeled on the legacy 7.5-minute maps, but are mass-produced from GIS databases of The National Map and published as digital documents.
There are several ways to view elevation in the United States. But the most common way to see a US elevation map is by using: Digital elevation model; Hillshade surface; Physical map; Let’s check out all 3 ways to see how height changes in America.
Average elevation: 309 m • United States • The Rocky Mountains, west of the Great Plains, extend north to south across the country, peaking at over 14,000 feet (4,300 m) in Colorado. Farther west are the rocky Great Basin and deserts such as the Chihuahua, Sonoran, and Mojave.
US Topo map data is derived from the geographic information system (GIS) data of The National Map and is continuously updated via National, state, local, and commercial partnerships. Current and historic USGS topographic maps are available for immediate download from The National Map Downloader .
The U.S. Geological Survey hosts topoView, an interactive database of the survey’s topographic maps. The map is searchable by address, and clicking on any point on the map brings up topographic maps of the area dating back to 1879. Map results can be narrowed further using scale and date filters.
