Large-scale digital line graph data from the U.S. Geological Survey
Entry ID: DLG_LARGE

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Summary
Abstract: Digital line graph (DLG) data are digital representations of cartographic information. DLGs of map features are converted to digital form from maps and related sources. Large-scale DLG data are derived from USGS 1:20,000-, 1: 24,000-, and 1: 25,000-scale 7.5-minute topographic quadrangle maps and are available in nine categories: (1) hypsography, (2) hydrography, (3)vegetative surface cover, (4) non-vegetative features, (5) boundaries, (6)survey control and markers, (7) transportation, (8) manmade features, and (9)Public Land Survey System. All DLG data distributed by the USGS are DLG - Level 3 (DLG-3), which means the data contain a full range of attribute codes, have full topological structuring, and have passed certain quality-control checks.

Purpose: DLGs depict information about geographic features on or near the surface of the Earth, terrain, and political and administrative units. These data were collected as part of the National Mapping Program.
Related URL
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Geographic Coverage
Spatial coordinates   
  N: 49.0   S: 24.0   E: -66.0   W: -126.0

Data Set Citation
Dataset Originator/Creator: U.S. Geological Survey EROS Center
Dataset Title: DLG Large
Dataset Release Date: 1981-01-01
Dataset Release Place: Sioux Falls, SD 57198 USA
Dataset Publisher: U.S. Geological Survey
Online Resource: http://earthexplorer.usgs.gov
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be aware that temporal changes may have occurred since the data was collected and that some parts of these data may no longer represent actual surface conditions.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
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: DLG Large

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
Fees: None
Personnel
Role: DIF AUTHOR
Phone: 605-594-6151
Fax: 605-594-6953
Email: lta at usgs.gov
Contact Address:
Long Term Archive
USGS EROS Center
U.S. Geological Survey
City: Sioux Falls
Province or State: SD
Postal Code: 57198-0001
Country: USA
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Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2001-06-28
Last DIF Revision Date: 2013-05-07
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