2018 NOAA National Geodetic Survey Topobathy Lidar DEM (void): Potomac River, Chesapeake Bay

Description

These data were collected by Quantum Spatial, Inc. (QSI) for the National Oceanic and Atmospheric Administration (NOAA), National Geodetic Survey (NGS), Remote Sensing Division (RSD), Coastal Mapping Program (CMP) using a Riegl VQ880G system. The Initial Award lidar data were acquired from 20180215 - 20180417 in eighteen missions. The dataset includes topobathy data in a LAS 1.2 format file with the following classification: unclassified (1), ground (2), noise (7), overlap default (19), overlap ground (20), overlap water column (21), water column (25), bathymetric bottom or submerged topography (26), submerged feature (29), submerged aquatic vegetation (30), temporal bathy bottom (31), and unclassified withheld/edge clip (129) in accordance with project specifications. The contracted project consists of approximately 309.125 square miles (197,840 acres) of the states of Virginia and Maryland covering the confluence of the Potomac River and the Chesapeake Bay. To ensure complete coverage and adequate point densities around survey area boundaries, the Area of Interest (AOI) was buffered by 100m. The full Initial Award project area including buffered area is approximately 478.151 square miles (306,017 acres). LAS files were compiled by 500 m x 500 m tiles. The final classified LiDAR data were then transformed to orthometric heights and used to create topobathymetric DEMs in IMG format with 1m pixel resolution.

Resources

Name Format Description Link
33 NOAA Data Management Plan for this record on InPort. https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocm/dmp/pdf/56297.pdf
0 Link to custom download https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8734
0 View the complete metadata record on InPort for more information about this dataset. https://www.fisheries.noaa.gov/inport/item/56297
0 Data Access Viewer for discovering coastal imagery, land cover, and elevation data https://coast.noaa.gov/dataviewer
0 Web page for the NOAA Office for Coastal Management https://coast.noaa.gov
0 Web page to the Digital Coast for finding coastal data https://coast.noaa.gov/dataregistry
0 NOAA Office for Coastal Management Home Page https://coast.noaa.gov
0 NOAA Office for Coastal Management Home Page https://coast.noaa.gov
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Link to bulk LAZ files https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/NGS_PotomacRiver_DEM_Void_2018_8734/
25 KMZ displays the footprint for this lidar data set. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8727/supplemental/2018_ngs_topobathy_potomac_river_m8727.kmz

Tags

  • united states of america
  • office of coastal management
  • national ocean service
  • dems
  • bathymetry
  • oceans
  • 20180417
  • chesapeake bay
  • virginia
  • continent
  • noaa
  • north america
  • doc/noaa/nos/ocm
  • coastal elevation
  • u.s. department of commerce
  • earth science
  • bathymetry/seafloor topography
  • maryland
  • coastal processes
  • seafloor topography
  • 20180215

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