U.S. Interagency Elevation Inventory (USIEI) - Data Download

The U.S. Interagency Elevation Inventory (USIEI) displays high-accuracy topographic and bathymetric data for the United States and its territories. The project is a collaborative effort between the National Oceanic and Atmospheric Administration, the U.S. Geological Survey, the Federal Emergency Management Agency, the U.S. Department of Agriculture - Natural Resources Conservation Service and 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.

This zip file contains the attribute information and footprints about the data sets that are displayed in the Topographic Lidar, Topobathy Shoreline Lidar, IfSAR Data, and Bathymetric Lidar layers in the USIEI viewer. This does not include the elevation data itself. The data are provided in Esri file geodatabase format (gdb) and in the open format of OGC GeoPackage (gpkg). The data is also available via this map service: https://coast.noaa.gov/arcgis/rest/services/USInteragencyElevationInventory/USIEIv2/MapServer.

The data is updated quarterly. The information provided for each elevation data set 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. The footprints in this data set are generalized to represent the coverage of the collection. If the exact data coverage is needed, please contact the data provider for an authoritative footprint. The fields in the gdb and gpkg are in four tables. The fields in each table are listed in the Entity Attribute Overview field.

High resolution, high accuracy datasets are often publicly available, but scattered in many places. The USIEI serves as a central index for available topographic and bathymetric data sets, provides information about the data sets, and directs you to further information.

Updates are done as a collaboration between multiple federal agencies to ensure the information is current.

The fields in the gdb and gpkg are in four tables that are listed below.

nationalelevtioninventory Table

Project_Name - Descriptive name of the project

Data_Type - Type of data: Lidar-Bathy, Lidar-Topo, Lidar-Topobathy, Multibeam, NOAA Hydro Surveys, Other Bathy Surveys

CollectionYear - Fiscal year of collection

ProjectStatus - The completion status of the data

Restrictions - The restrictions, if any, on the use of the data. Government Only, Other, Public, Purchase, Unknown

Horizontal_Datum - Horizontal datum of the data

Horizontal_Accuracy - Horizontal accuracy of the data

Vertical_Datum - Vertical datum of the data

Notes - Any items of interest or additional information not represented by other attributes

Products_Available - The types of data products available

Point_Spacing - The distance between data points. Also may be called Horizontal Resolution or Ground Sample Distance (GSD) or Nominal Pulse Spacing (NPS) of data. Expressed in meters.

Collection_Date - The actual dates of collection of the data

Point_Spacing_Number - The numerical value of the Point Spacing, expressed in cm RMSE.

QL - The quality level assigned to the data set. 1-5 are the quality levels. 7 is bad or unusable data. 8 is bathymetry, 9 is Unknown

InvID - US Interagency Elevation Inventory (USIEI) identification number

Global ID - The Universally Unique Identifier or GUID assigned to the data set

Owner - The agency responsible for maintaining the record

Meets3DEP - Does the data meet 3DEP requirements? Yes, No, Expected to Meet or Unknown

Reasons3DEP - Reasons wny the data does or does not meet 3DEP requirements

UUID - Universally Unique Identifier

DistributorName - USGS/National Map name and/or source agency name

CoverageArea - 2 letter state/territory abbreviation for the state(s)/territory(ies) the data set covers

LASFormat - The data file format (LAS 1.4, LAS 1.2. or others)

PointClasses - The classifications of the points in the data set

LeafOnOff - Indicates if the data was flown during Leaf Off or Leaf On conditions

InfoContact - Corporate contact about the data set, usually an email address

Contract_Specification - USGS Lidar Base Specification used in the contract to collect the data

Meets_3DEP_LPC - Does the data set meet 3DEP Lidar Point Cloud requirements? Differs from the Meets 3DEP field by looking at only the point cloud

FootprintType - The type of footprint represented. It may be the footprint used in the planning stage, the footprint given to a contractor for acquisition, the completed footprint, or a simplified footprint used for web viewing. Initially, all footprints were copied from the simplified web footprint, but will be updated over time.

DataLinks Table

InvUUID - The Universally Unique Identifier for a data set.

Link - The link to the data access, metadata, service, or additional resource

LinkLabel - The text to appear in the viewer for the associated link

LinkIDType - The number that identifies the type of link

LinkType Table

LinkTypeID - The number that identifies the type of link

LinkTypeName - The type of link and the field in the viewer to display the link

VertAccBasis Table

BasisID - The number that identifies the source of the vertical accuracy value

Description - The source of the vertical accuracy value

VertAccuracy Table

InvUUID - The Universally Unique Identifier for a data set

VertRMSEcm - The numerical value of the RMSE expressed in centimeters. A value of 9999 indicates that the vertical accuracy is unknown, not applicable, or has not yet been determined.

Description - The numerical value and unit of the vertical accuracy

BasisID - The number that identifies the source of the vertical accuracy

Intended use of this information is not for navigational purposes. Acquire metadata for additional information on each data set and verification of accuracy of inventory content. Any conclusions drawn from the analysis of this information are not the responsibility of the National Oceanic and Atmospheric Administration (NOAA), the U.S. Geological Survey (USGS), the Federal Emergency Management Agency (FEMA), the U.S. Department of Agriculture (USDA), the U.S. Forest Service (USFS), the U.S. Army Corps of Engineers (USACE), the National Park Service (NPS), the NOAA National Centers for Environmental Information (NCEI), the NOAA Office for Coastal Management or their partners.

Download a zipped Esri file geodatabase (gdb) and/or Open GeoSpatial Consortium (OGC) GeoPackage (gpkg)

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The Esri file geodatabase (gdb) and the OGC GeoPackage (gpkg) files are created by the NOAA Office for Coastal Management (OCM) to provide USIEI users with the footprints and attribute information for the IfSAR and the topographic, topobathy, and bathymetric lidar that are displayed in the USIEI viewer.