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    • 2023 NOAA NGS Lidar DEM: Long Island Sound, NY

    Metadata Updated: May 22, 2025

    NOAA Long Island Sound Topobathymetric Lidar data were collected by NV5 using Leica Chiroptera/Hawkeye 4X and Chiroptera/Hawkeye 5 systems in four blocks. Block01 was flown between 20230305 and 20230411 in 14 missions, block02 was flown between 20230305 and 20230722 in 23 missions, block03 was flown between 20230316 and 20231028 in 13 missions and block04 was flown between 20230410 and 20230530 in 19 missions.

    The final classified lidar data were then transformed from ellipsoid (GRS80) to orthometric height (Geoid18) and used to create topobathymetric DEMs in Cloud Optimized GeoTIFF format with 1m pixel resolution.

    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 25, 2025
    Metadata Created Date May 22, 2025
    Metadata Updated Date May 22, 2025
    Reference Date(s) 2025 (creation), (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NOS NGS

    Other Data Resources

    Graphic Preview

    This graphic shows the lidar footprint for this dataset.

    Additional Metadata

    Resource Type Dataset
    Metadata Date February 25, 2025
    Metadata Created Date May 22, 2025
    Metadata Updated Date May 22, 2025
    Reference Date(s) 2025 (creation), (publication)
    Responsible Party NOAA Office for Coastal Management (Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:74870
    Access Constraints Cite As: National Geodetic Survey, [Date of Access]: 2023 NOAA NGS Lidar DEM: Long Island Sound, NY [Data Date Range], https://www.fisheries.noaa.gov/inport/item/74870., 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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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 -71.79
    Bbox North Lat 41.56
    Bbox South Lat 41.12
    Bbox West Long -72.98
    Coupled Resource
    Frequency Of Update notPlanned
    Graphic Preview Description This graphic shows the lidar footprint for this dataset.
    Graphic Preview File https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/10273/supplemental/extent_ngs_longIslandSound_topobathy_m10273.kmz
    Graphic Preview Type kmz
    Harvest Object Id 60558daa-c8e4-410f-8098-4da034c161bb
    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": [[[-72.98, 41.12], [-71.79, 41.12], [-71.79, 41.56], [-72.98, 41.56], [-72.98, 41.12]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System EPSG::6347
    Spatial Harvester True
    Temporal Extent Begin 2023-03-05
    Temporal Extent End 2023-04-11

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