Content Description
Abstract: Statewide digital elevation model (DEM). A DEM contains a series of elevations ordered from south to north with the order of the columns from west to east. The DEM is formatted as one ASCII header record (A-record), followed by a series of profile records (B- records) each of which include a short B-record header followed by a series of ASCII integer elevations per each profile. The last physical record of the DEM is an accuracy record (C-record). The 7.5-minute DEM provides coverage in 7.5- by 7.5-minute blocks. Each product provides the same coverage as a standard USGS 7.5-minute quadrangle. Coverage is available for the contiguous United States, Hawaii, and Puerto Rico but is not complete.
Purpose: DEMs can be used as source data for digital orthophotos, and as layers in geographic information systems, for earth science analysis. DEMs can also serve as tools for volumetric analysis, for site location of towers, or for drainage basin delineation. These data were collected as part of the National Mapping Program.
Supplemental Information: This DEM dataset has been reprojected to the Kentucky NAD83 Single Zone Coordinate System using the interpolation method specified by NADCON (NGS). When the zip file is extracted a directory called DEM will be created. The file-based geodatabase will be placed in the DEM directory.
Content Status
Progress: Complete
Update Frequency: Irregular
Content Keywords
Theme Keywords: REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords., imageryBaseMapsEarthCover, digital terrain model, hypsography, dem, altitude, height, elevation, USGS, EPPC, statewide dem, DGI, OGI
Place Keywords: