United States Interagency Elevation Inventory (USIEI)

The U.S. Interagency Elevation Inventory displays high-accuracy topographic and bathymetric data for the United States and its territories. The project is a collaborative effort between NOAA, the U.S. Geological Survey, the Federal Emergency Management Agency, the U.S. Department of Agriculture, the U.S. Forest Service, the National Park Service and the U.S. Army Corps of Engineers. This resource is a comprehensive, nationwide listing of known high-accuracy topographic data, including lidar and IfSAR, and bathymetric data,including NOAA hydrographic surveys, multibeam data, and bathymetric lidar. The following data layers are updated quarterly: topographic lidar, topobathy shoreline lidar, IfSAR data, and bathymetric lidar. The NOAA hydrographic surveys, the multibeam and trackline bathymetry shown are provided via a service that is available from the NOAA National Centers for Environmental Information (NCEI). Access the bathymetric data directly from the NCEI at: http://maps.ngdc.noaa.gov/viewers/bathymetry/ The US Army Corps of Engineers (USACE) hydrographic surveys are provided via a service that is available from the USACE. The information provided for each elevation dataset includes many attributes such as vertical accuracy, point spacing, and date of collection. A direct link to access the data or information about the contact organization is also available through the inventory.

Data quality information