Source: Nebraska Department of Natural Resources
Processed by: Data Bank (KM)
Digital Elevation Model - for more information - click
(DEM) is a sampled array of elevations for a number of ground positions referenced horizontally
and are usually spaced at regular intervals. The DEMs are produced in 7.5 minute quadrangle units which correspond
to USGS 7.5 topographic maps with contour lines spaced at 10 feet interval and drawn to 1:24,000 scale. The level-2, 30-meter interval,
DEMs
are elevation data generated from hypsography (contours) Digital line graphs (DLGs) that have been processed or smoothed for consistency and edited to remove
identifiable systematic errors. The DEMs are referenced horizontally to the NAD 27 and UTM projections (Zone 13, 14 & 15), and have a root mean square error (RMSE)
of one half of the contour interval. The elevation units are in feet relative to the National Geodetic Vertical Datum of 1929 (NGVD29).
The following Information Resources are available:
Availablity of DEMs - (10 meter)
The Nebraska Department of Natural Resources, in cooperation with the U. S. Geological Survey, developed 10-meter interval, Level 2, DEMs for the State of Nebraska.
These DEMs are produced in 7.5 minute quadrangle units drawn to 1:24,000 scale, and are referenced to NAD 27 and UTM projections. The elevation units are in feet relative to NGVD 1929.
Following options are available to retrieve 10-meter DEMs:
Retrieval of DEMs (30-meter)
The Nebraska Department of Natural Resources (DNR) in cooperation with the U.S. Geological Survey, developed Level-2, 7.5
minute, 30-meter interval DEMs for the entire state of Nebraska.
These DEMs are available through the Department of Natural Resources website and are also available
upon request from the agency.
Following Options are available to retrieve 30-meter DEMs:
Display of DEMs
A GIS (Geographic Information System) software is required to display DEM coverages. A copy of a freeware software called
"DEM3d" is available from the Mid Continent Mapping Center (MCMC), U.S. Geological Surveuy. It can be downloaded from the
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