1:250,000 Scale Digital Elevation Models (DEM) from the U.S. Geological Survey
Entry ID: USGS_DEM250K

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Summary
Abstract: A digital elevation model (DEM) consists of an array of elevations for ground positions that are usually at regularly spaced intervals.

The 1-degree DEM provides coverage in 1- by 1-degree blocks and is available for all of the contiguous United States, Hawaii, and most of Alaska. The basic elevation model is produced by the Defense Mapping Agency (DMA) using cartographic and photographic ... View entire text
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Description: National Elevation Dataset
Geographic Coverage
Spatial coordinates   
  N: 76.63   S: 13.71   E: -61.48   W: -177.1

Data Set Citation
Dataset Title: 1:250,000 Scale Digital Elevation Models
(DEM)
Dataset Publisher: EROS Data Center, USGS
Online Resource: http://edc.usgs.gov/geodata/
Data Resolution
Latitude Resolution: 1 degree
Longitude Resolution: 1 degree
Access Constraints None.
Use Constraints There is no guarantee of warranty concerning the accuracy of these data. Users should be aware that temporal changes may have occurred since the data was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of their limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data set is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data set, nor to imply that changes made were approved or endorsed by the U.S. Geological Survey. Please refer to http://www.usgs.gov/privacy.html for the USGS disclaimer.
Data Set Progress
IN WORK
Originating Center
Data Center
Earth Resources Observation and Science Center, U.S. Geological Survey, U.S. Department of the Interior Supplemental Info
Data Center URL: http://eros.usgs.gov/
Dataset ID: Small-scale DEM

Data Center Personnel
Name: EROS CENTER
Phone: 605-594-6151
Phone: 800-252-4547
Fax: 605-594-6589
Email: lta at usgs.gov
Contact Address:
LTA Customer Services
U.S. Geological Survey
EROS Center
47914 252nd Street
City: Sioux Falls
Province or State: SD
Postal Code: 57198-0001
Country: USA
Distribution
Distribution Media: Digital Download from http://ned.usgs.gov
Fees: None
Personnel
Role: DIF AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
Publications/References
Digital Elevation Models, National Mapping Program Technical
Instructions, Data Users Guide 5, U.S. Geological Survey, Second
Printing (Revised), Reston, Virginia, 1990.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2001-02-09
Last DIF Revision Date: 2013-06-03
Future DIF Review Date: 2004-05-06
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