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    • 2018 NOAA National Geodetic Survey Topobathy Lidar: Potomac River, Chesapeake Bay

    Metadata Updated: March 15, 2024

    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 delivery 02 lidar data were acquired from 20180215 - 20180417 in five 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), and temporal bathy bottom (31) 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 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.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date February 29, 2024
    Metadata Created Date July 28, 2023
    Metadata Updated Date March 15, 2024
    Reference Date(s) 2019-05 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NOS NGS

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date February 29, 2024
    Metadata Created Date July 28, 2023
    Metadata Updated Date March 15, 2024
    Reference Date(s) 2019-05 (publication)
    Responsible Party NOAA Office for Coastal Management (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:56114
    Access Constraints Cite As: National Geodetic Survey, [Date of Access]: 2018 NOAA National Geodetic Survey Topobathy Lidar: Potomac River, Chesapeake Bay [Data Date Range], https://www.fisheries.noaa.gov/inport/item/56114., Access Constraints: None, Use Constraints: Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations., Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the National Geodetic Survey, the Office for Coastal Management, or its partners.
    Bbox East Long -76.176395
    Bbox North Lat 38.332869
    Bbox South Lat 37.715495
    Bbox West Long -76.791568
    Coupled Resource
    Frequency Of Update notPlanned
    Harvest Object Id 0f14f38e-f5c2-46bd-a3f7-94233dfbdb1b
    Harvest Source Id ea6e63e6-96bb-4fb1-a72f-b7af08062c83
    Harvest Source Title NOS NGS
    Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-76.791568, 37.715495], [-76.176395, 37.715495], [-76.176395, 38.332869], [-76.791568, 38.332869], [-76.791568, 37.715495]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System EPSG::6319
    Spatial Harvester True
    Temporal Extent Begin 2018-02-15
    Temporal Extent End 2018-04-17

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