National Geospatial Program Standards
| Available Documents | Version Date | Available Formats |
|---|---|---|
| Standards for Digital Elevation Models Contains preliminary pages and pages that briefly describe the various changes that have been made to the standard. (5 p., 11KB, PDF) |
01/1998 |  Download the latest Adobe Reader |
| Part 1: General, Standards for Digital Elevation Models Identifies and provides a general overview of the characteristics of the five different Digital Elevation Model (DEM) product types. This part describes horizontal coordinate systems, units of coverage, elevation units, profile spacing (horizontal grid spacing), and data order of DEM data. (17 p., 97KB, PDF) |
08/1997 | |
| Part 2: Specifications, Standards for Digital Elevation Models Defines specifications for data accuracy, classification levels, format, geometry, areas of constant elevation, data records, horizontal and vertical datums, and geographic reference systems for DEM products. (70 p., 207KB, PDF) |
01/1998 | |
| Part 3: Quality Control, Standards for Digital Elevation Models Identifies several procedures for accuracy verification and editing that are mandatory during a quality control check of DEM data. (10 p., 23KB, PDF) |
08/1997 | |
Please note: NGP standards documents that are available in Adobe's PDF format require the latest version of the free Adobe Reader or the full version of Adobe Acrobat to view, navigate, or print. For additional information, please see the Help -- Instructions.
If you have comments and (or) questions about Digital Elevation Model standards or any other USGS NGP standards documents, please e-mail NGP Standards.
For comments or questions about other USGS products and (or) services, please contact Ask USGS -- Science Information and Library Services (SILS) or call 1-888-ASK-USGS (1-888-275-8747) or e-mail ask@usgs.gov.
Top | Help -- Instructions | NGP Standards Home | National Geospatial Programs Office | USGS Home
U.S. Department of the Interior | U.S. Geological Survey
URL: http://rockyweb.cr.usgs.gov/nmpstds/demstds.html
Questions or Assistance: Contact USGS
Last modified: Wednesday, 29-Aug-2007 08:10:10 MDT
