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    • 2023 NOAA Lidar: AK Coastal Communities (Dillingham/Aleknagik, Ekuk, Ekwok, Koliganek, Manokotak, New Stuyahok)

    Metadata Updated: September 11, 2025

    Original Product: Classified LAZ 1.4 files, formatted to 1611 individual 750m x 750m tiles covering the NOAA AK Communities 2023 project area.

    Original Geographic Extent: This dataset and derived products encompass six areas in southwest Alaska, covering approximately 183,738 acres.

    Original Dataset Description: The NOAA AK Coastal Communities 2023 Lidar project called for the planning, acquisition, and processing of lidar data collected to Quality Level 1 (QL1) standards. Project specifications are based on the U.S. Geological Survey National Geospatial Program Lidar Base Specification Version 2023, Revision A. The data was developed based on the NAD83 2011 horizontal datum and the NAVD88 Geoid 12b vertical datum. Data was projected in UTM Zone 4N, Meters. Lidar data was delivered as calibrated and classified LAZ 1.4 files. Non-Vegetated Vertical Accuracy (NVA) was assessed using 124 check points located on bare earth in clear, unobstructed areas. Vegetated Vertical Accuracy (VVA) was assessed using 37 check points in Tall Grass, Forest, and Shrub landcover types. Single swath nominal pulse spacing (NPS) was designed to be 0.35 at nadir. Aggregate Nominal Pulse Spacing (ANPS) was calculated to be 0.269 using all valid first return points. Derived products include: Intensity Imagery, Hydro-flattened Bare Earth Digital Elevation Models (DEMs), Highest Hit Digital Surface Models (DSMs), and 3D waters edge breaklines. Ground Condition: Ground conditions were free of snow and acquisition occurred free of smoke, fog and cloud cover.

    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 September 3, 2025
    Metadata Created Date September 4, 2025
    Metadata Updated Date September 11, 2025
    Reference Date(s) January 1, 2023 (creation), 2025 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NOS OCM

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date September 3, 2025
    Metadata Created Date September 4, 2025
    Metadata Updated Date September 11, 2025
    Reference Date(s) January 1, 2023 (creation), 2025 (publication)
    Responsible Party NOAA Office for Coastal Management (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:77581
    Access Constraints Cite As: Office for Coastal Management, [Date of Access]: 2023 NOAA Lidar: AK Coastal Communities (Dillingham/Aleknagik, Ekuk, Ekwok, Koliganek, Manokotak, New Stuyahok) [Data Date Range], https://www.fisheries.noaa.gov/inport/item/77581., 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 Office for Coastal Management or its partners.
    Bbox East Long -158.81
    Bbox North Lat 59.05
    Bbox South Lat 58.91
    Bbox West Long -159.09
    Coupled Resource
    Frequency Of Update notPlanned
    Harvest Object Id 84122631-4695-4ec0-a1e4-d267090d4e0a
    Harvest Source Id c0121fd9-df15-4168-ac04-42f6e36a794d
    Harvest Source Title NOS OCM
    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 This data was collected by NV5 Geospatial for the NOAA Office for Coastal Management (OCM).
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-159.09, 58.91], [-158.81, 58.91], [-158.81, 59.05], [-159.09, 59.05], [-159.09, 58.91]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System EPSG::6319
    Spatial Harvester True
    Temporal Extent Begin 2023-09-17
    Temporal Extent End 2023-09-18

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