USGS Geographic Data Download Alternative Page
Data Sets NOTES:
NOTICE: Effective July 1, 1996, the U.S. Geological Survey discontinued providing the Digital Line Graph (DLG-S) data in the Standard format. The Digital Line Graph (DLG-O) data in the Optional (Native) format will continue to be available. The newer Spatial Data Transfer Standard (SDTS) format availability will continue to increase as data are converted and/or produced in this format.
Note: These data files are for use in geographical information systems(GIS) for analysis and integration
with other geospatial data. They are not directly viewable using WWW browser or image viewing tools.
The USGS offers free software for viewing some digital cartographic products, including DLG-O, DEM,
DLG/SDTS and DRG data. These viewers run on Windows 95/NT only. They are tools for data preview, and
are not substitutes for commercial geographic information system software. Available display software
may be found in the "Public Domain Software" Web page.
The EROS Data Center provides file transfer protocol (FTP) access to a variety of USGS digital data sets.
The following is a list of each data set and includes: a link to data examples, a hyperlink to user guide
information, and a list of the methods available for transferring the data using FTP. You can download files
by connecting to the data set's anonymous FTP account and selecting files from the existing directory structure
(FTP from account), by selecting from a list of states that will guide you to the appropriate files
(FTP sorted by state), or by using the graphic option which allows you to select files using an index map
(Graphics FTP). Not all FTP options are available for each data set. The user guide provides detailed
information about the data set, including distribution formats.
If you use FTP from account, be sure to review the README (or 00README) file located in the first
directory you encounter.
Status Maps
are available for a limited number of data sets.
Geographic Data Download Statistics
Public Domain Software for use with DEM, DLG, DRG, LULC, and SDTS files.
Spatial Data Transfer Standard
(SDTS)
information. Note: Please be aware that not all Native files have been converted to SDTS format.
For a complete listing of data available in Native and SDTS, please go to EarthExplorer.
1:250,000 Scale Digital Elevation Models (DEM)
Examples
Status Maps
Data User Guide (National Mapping Program FTP)
Elevation Program
(USGS Rocky Mountain Mapping Center HTML)
Condensed User Guide (HTML)
Review the 00README
before downloading!
FTP via Alphabetical List
FTP via State
FTP via Graphics
1:24,000 Scale Digital Elevation Models (DEM) SDTS format only
The USGS has two options for acquiring 1:24,000-Scale (7.5-minute) Digital Elevation Model data.
1) The original DEM 7.5 minute tiled data available only in Spatial Data Transfer Standard (SDTS) form
is available at no cost via downloads from the GeoComm International Corporation at http://gisdatadepot.com/dem
and from MapMart.com at http://www.mapmart.com, and from Advanced Topographic Development and Images (ATDI) at
http://www.atdi-us.com. (See disclaimer).
Disclaimer
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The U.S. Geological Survey (USGS) has entered into an agreement with the GeoCommunity, MapMart.com, and ATDI,
to serve updated, SDTS format, Digital Elevation Models (DEMs) through the GIS Data Depot at
http://www.gisdatadepot.com and at MapMart.com at
http://www.mapmart.com, and ATDI at
http://www.atdi-us.com for no charge. The 7.5' SDTS DEM data are also available for purchase via premium
(fast) download and on CD-ROM from GeoCommunity and for purchase on CD-ROM from MapMart.com.
The decision to provide SDTS DEMs through commercial vendors is consistent with the USGS goal of making
more public domain data available at no charge while enabling the private sector to have a greater role
in the distribution of USGS data. SDTS DEMs placed on media in response to customer orders will be sold
by our partners at a price less than the USGS currently charges.
The GeoCommunity, MapMart.com, and ATDI will continue to receive SDTS versions of the DEMs as they are
made available by the USGS. Native format DEMs are still available for sale from USGS on various media
and via ftp.
If you have additional questions or comments, please contact us at sdts@usgs.gov. Please monitor the
SDTS Home Page for further news and updates on this issue. http://mcmcweb.er.usgs.gov/sdts
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2) The National Elevation Dataset (NED) is the result of the maturation of the USGS effort to provide
1:24,000-scale Digital Elevation Model (DEM) data for the conterminous U.S. and 1:63,360-scale DEM
data for Alaska in a seamless form. Available data formats include ArcGrid, Floating Point, and BILS.
For more information see (30m NED button), or go directly to the
Seamless Data Distribution System at (Seamless Store).
30m NED button: 30 Meter Resolution National Elevation Dataset
Merging the highest-resolution, best-quality elevation data available across the United States
into a seamless raster format has developed the USGS National Elevation Dataset (NED). NED is
the result of the maturation of the USGS effort to provide 1:24,000-scale Digital Elevation Model
(DEM) data for the conterminous US and 1:63,360-scale DEM data for Alaska.
Seamless Data Distribution System (SDDS)
offers seamless data for sale, by user-defined area, in a variety of formats.
30 Meter Resolution National Elevation Dataset (NED)
Merging the highest-resolution, best-quality elevation data available across the United States into a
seamless raster format has developed the USGS National Elevation Dataset (NED). NED is the result of
the maturation of the USGS effort to provide 1:24,000-scale Digital Elevation Model (DEM) data for the
conterminous US and 1:63,360-scale DEM data for Alaska.
Seamless Data Distribution System (SDDS) offers
seamless data for sale, by user-defined area, in a variety of formats.
1:2,000,000 Digital Line Graphs (DLG) SDTS format only
Examples
Data User Guide
(National Mapping Program FTP)
Condensed User Guide
(Global Land Information System HTML)
Review the 00README
before downloading!
SDTS format only.
FTP via State
FTP via Graphics
SDTS Format Data Dictionaries: SDTS DLGs require the use of either the uncompressed SDTS Master Data Dictionary
file as a single tar file for
1:2M,
100K, 1:24K
or a series of uncompressed small files for
1:2M.
100K,
1:24K
1:100,000 Scale Digital Line Graphs (DLG)
File names changes Note: The file names have been changed to match the file naming structure from
the production centers. A cross reference from the old naming convention to
the new naming convention is available for
optional (native) and SDTS formats.
Example
Status Maps
Data User Guide
(National Mapping Program FTP)
Condensed User Guide
(Global Land Information System HTML)
Review the 00README
for Native and the
00README.SDTS for SDTS before downloading data.
FTP via Alphabetical List
FTP via State
FTP via Graphics
SDTS DLGs require Master Data Dictionary: SDTS DLGs require the use of either the uncompressed SDTS Master Data Dictionary
file as a single tar file for
1:2M,
100K, 1:24K
or a series of uncompressed small files for
1:2M.
100K,
1:24K
1:24,000 Scale Digital Line Graphs (DLG) SDTS Format Only
Example
Status Maps
Data User Guide (National Mapping Program FTP)
Condensed User Guide (Global Land Information System HTML)
Review the
00README before downloading!
SDTS format only.
FTP via Alphabetical List
FTP via State
FTP via Graphics
SDTS DLGs require Master Data Dictionary: SDTS DLGs require the use of either the uncompressed SDTS Master Data Dictionary
file as a single tar file for
1:2M,
100K, 1:24K
or a series of uncompressed small files for
1:2M.
100K,
1:24K
1:250,00 & 1:100,00 Scale Land Use Land Cover (LULC)
Examples
Condensed User Guide (Global Land Information System HTML)
Review the
00README before downloading!
250K FTP via Alphabetical List
250K FTP via State
250K FTP via Graphics
Review the
00README before downloading!
100K FTP via Alphabetical List
100K FTP via State
100K FTP via Graphics
National Land Cover Data (NLCD)
Product Description
Examples
Products
Classification Guide
National Hydrography Dataset (NHD)
Status Maps
Technical References
National Hydrographic Dataset Program
Download Data
U.S. Department of the Interior |
U.S. Geological Survey (USGS) | EROS Data Center (An official website of the U.S. government.)
