This is a site hosted at the EROS Data Center by the USGS. Here you will find public web map services, and interfaces developed at the center. Many of the public web map services are published on the Geography Network, and some national services are cohosted by ESRI. (Read more)
The Seamless Data Distribution System and other map and web services will be down:
Oct. 14, 2004 10:00 pm to 12:00 am
Oct. 15, 2004 12:00 am to 12:00 pm
The downtime is for hardware/administrative maintenance on the systems. We apologize for any inconvenience.
A new area for NED 1/3 Arc Second data has been added to SDDS. The new areas are pieces across the United States. To see what areas are available follow steps listed below.
High Resolution Orthoimagery now available for Carson City, NV-Chattanooga,TN- Salt Lake City,UT on 
A new area for NED 1/3 Arc Second data has been added to SDDS. The new areas are pieces across the United States. To see what areas are available follow steps listed below.