Nebraska Elevation Data Metadata

Identification Information:

  • Citation:
    • Citation_Information:
      • Originator: U.S. Geological Survey (USGS), EROS Data Center
      • Publication_Date: 1999
      • Title: National Elevation Dataset
      • Edition: 1
      • Publication_Information:
    • Publisher: Conservation and Survey Division, University of Nebraska-Lincoln.
  • Description:
    • Abstract:
      • The U.S. Geological Survey has developed a National Elevation Dataset (NED). The NED is a seamless mosaic of best-available elevation data. The 7.5-minute elevation data for the conterminous United States are the primary initial source data. In addition to the availability of complete 7.5-minute data, efficient processing methods were developed to filter production artifacts in the existing data, convert to the NAD83 datum, edge-match, and fill slivers of missing data at quadrangle seams. One of the effects of the NED processing steps is a much-improved base of elevation data for calculating slope and hydrologic derivatives.
    • Purpose:
      • Geospatial elevation data are utilized by the scientific and resource management communities for global change research, hydrologic modeling, resource monitoring, mapping, and visualization applications.
  • Time_Period_of_Content:
    • Time_Period_Information:
      • Beginning_Date: 19990201
      • Ending_Date: Unknown
    • Currentness_Reference: publication date
  • Status:
    • Progress: In work
    • Maintenance_and_Update_Frequency: As needed
  • Spatial_Domain:
    • Bounding_Coordinates:
      • West_Bounding_Coordinate: -104.053
      • East_Bounding_Coordinate: -96.064
      • North_Bounding_Coordinate: 43.002
      • South_Bounding_Coordinate: 40.001
  • Keywords:
    • Theme:
      • Theme_Keyword_Thesaurus: GCMD Parameter Keywords
      • Theme_Keyword: EARTH SCIENCE
      • Theme_Keyword: LAND SURFACE
      • Theme_Keyword: TOPOGRAPHY
      • Theme_Keyword: LANDFORMS
      • Theme_Keyword: TERRAIN ELEVATION
      • Theme_Keyword: 1-DEGREE DEM
      • Theme_Keyword: 2-ARC-SECOND DEM
      • Theme_Keyword: 7.5-MINUTE DEM
      • Theme_Keyword: CARTOGRAPHY
      • Theme_Keyword: DEM
      • Theme_Keyword: DIGITAL ELEVATION MODEL
      • Theme_Keyword: DIGITAL MAPPING
      • Theme_Keyword: EDC
      • Theme_Keyword: EROS
      • Theme_Keyword: GEODATA
      • Theme_Keyword: GIS
      • Theme_Keyword: MAPPING
      • Theme_Keyword: RASTER
      • Theme_Keyword: USGS
    • Place:
      • Place_Keyword_Thesaurus: GCMD Location Keywords
      • Place_Keyword: NORTH AMERICA
      • Place_Keyword: UNITED STATES
      • Place_Keyword: UNITED STATES OF AMERICA
    • Access_Constraints: None
    • Use_Constraints:
      • None. Acknowledgement of the originating agencies would be appreciated in products derived from these data.
  • Distribution_Information:
    • Distributor: Conservation and Survey Division, UN-L
  • Point_of_Contact:
    • Contact_Information:
      • Contact_Person_Primary: Les Howard
      • Contact_Organization_Primary: Conservation and Survey Division
      • Address_Type: mailing and physical address
      • Address:
        • Conservation and Survey Division
        • 113 Nebraska Hall
        • University of Nebraska
        • Lincoln, NE 68588-0517
        • Contact_Voice_Telephone: 402-4729192
        • Resource_Description: National Elevation Dataset (NED)
  • Distribution_Liability:
    • Although these data have been processed successfully on a computer system at the Conservation and Survey Division, no warranty expressed or implied is made by either regarding the utility of the data on any system, nor shall the act of distribution constitute any such warranty. The CSD will warrant the delivery of this product in computer-readable format and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer peripherals, or when the physical medium is delivered in damaged condition.
Data: Download or Purchase

Data Quality Information

  • Lineage:
    • Source_Information:
      • Source_Citation:
        • Citation_Information:
          • Originator: U.S. Geological Survey (USGS), EROS Data Center
          • Publication_Date: 1999
          • Title: National Elevation Database
          • Edition: 1
          • Geospatial_Data_Presentation_Form: raster digital data
          • Publication_Information:
          • Publication_Place: Sioux Falls, SD
          • Publisher: U.S. Geological Survey
          • Online_Linkage: http://edcnts12.cr.usgs.gov/ned/default.htm
    • Process_Step:
      • Process_Description: Original data was copied from the National Elevation Database CD and converted to a grid file within ArcInfo. The tiles were mosaiced, reprojected and resampled to 30 meter cell size.

Spatial Reference Information:

  • Horizontal_Coordinate_System_Definition:
    • Planar:
      • Grid_Coordinate_System_Name: Universal Transverse Mercator
      • UTM_Zone_Number: 13-15
      • Transverse Mercator:
        • Scale_Factor_at_Central_Meridian: .0996
        • Longitude_of_Central_Meridian: dependent on UTM zone
        • Latitude_of_Projection_Origin: 0.0
        • False_Easting: 500000
        • Flase_Northing: 0
    • Geodetic_Model:
      • Horizontal_Datum_Name: North American Datum 1983
      • Ellipsoid_Name: Geodetic Reference System 80 (GRS80)

Entity_and_Attribut_Information:

  • Detailed_Description:
    • Entity_type: Elevation
      • Entity_Type_Label: Elevation in meters above sea level
      • Entity_Type_Definition: Unknown
      • Entity_Type_Definition_Source: Unknown
    • Attribute:
      • Attribute_Label: Value
      • Attribute_Definition: For each cell the associated value is the elevation above sea level.
      • Attribute_Definition_Source: Unknown
      • Attribute_Units_of_Measure: Meters

Metadata_Reference_Information:

  • Metadata_Date: 200004

Questions ????

Les Howard
Les Howard, GIS Specialist

229e Hardin Hall
University of Nebraska-Lincoln
Lincoln NE 68583-0982