Information Access and Distribution Development

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Map & Data Services
The Information Access and Distribution Development project provides map and data services for The National Map, Geospatial One Stop, and a variety of applications for homeland security and natural hazards. Our mission is to deliver information at low or no cost in convenient formats for GIS user's around the world. Our current online data holdings are listed below with future holdings noted in italics.

International	National
GISDATA Web Portal Earth Explorer	GISDATA Web Portal Earth Explorer Seamless Data Distribution

Please visit these sites for more information on these data sets:

International

National

Elevation (30" GTOPO30)
Elevation Hydrologic Derivatives (HYDRO1k)
NIMA Gazeteer
Shuttle Radar Topography Mission (90 m SRTM)
Vector Map of the World (VMAP)

Elevation (1' NED, 1/3" NED (partial coverage), and 1/9" NED (Limited areas))
Geographic Names Information System (GNIS Condensed)
Land Cover (National Land Cover Dataset)
Land Cover (National Land Cover Database 2001, partial coverage)
MODIS Direct Broadcast
NHD (RAD extraction)
Shuttle Radar Topography Mission (30 m SRTM)
Transportation (Bureau of Transportation Statistics Roads)
Population (CENSUS 2000)

Please visit our portal page at http://gisdata.usgs.net for more information or our seamless store at http://seamless.usgs.gov to obtain data sets.