2024 NOAA Lidar DEM: AK Coastal Communities (Kachemak Bay)
Original Product: Hydroflattened Digital Elevation Model (DEM) data covering the NOAA AK Communities 2025 project area.
Original Geographic Extent: This dataset and derived products encompass an area covering approximately 286,327 acres of Southwest Alaska.
Original Dataset Description: Lidar flight line swaths were processed to create 2,299 classified LAZ 1.4 files delineated in 750m x 750m tiles. Each LAZ file contains lidar point information, which has been calibrated, controlled, and classified. Class 2 (ground) lidar points in conjunction with the hydro breaklines were used to create 2,299 - 0.5 meter hydro-flattened Raster DEMs delineated in 750m x 750m tiles. Non-Vegetated Vertical Accuracy (NVA) was assessed using 43 check points located on bare earth in clear, unobstructed areas. Vegetated Vertical Accuracy (VVA) was assessed using 19 check points in Tall Grass, Forest, and Shrub landcover types. Additional products include classified LAZ files, intensity images, maximum surface height rasters, and 3D breaklines of water bodies within the study area.
Ground Condition: Ground conditions contained snow at high elevations and acquisition occurred free of smoke, fog and cloud cover
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "NOAA Office for Coastal Management",
"@type": "vcard:Contact",
"hasEmail": "mailto:coastal.info@noaa.gov"
}
|
| describedByType | application/octet-steam |
| description | Original Product: Hydroflattened Digital Elevation Model (DEM) data covering the NOAA AK Communities 2025 project area. Original Geographic Extent: This dataset and derived products encompass an area covering approximately 286,327 acres of Southwest Alaska. Original Dataset Description: Lidar flight line swaths were processed to create 2,299 classified LAZ 1.4 files delineated in 750m x 750m tiles. Each LAZ file contains lidar point information, which has been calibrated, controlled, and classified. Class 2 (ground) lidar points in conjunction with the hydro breaklines were used to create 2,299 - 0.5 meter hydro-flattened Raster DEMs delineated in 750m x 750m tiles. Non-Vegetated Vertical Accuracy (NVA) was assessed using 43 check points located on bare earth in clear, unobstructed areas. Vegetated Vertical Accuracy (VVA) was assessed using 19 check points in Tall Grass, Forest, and Shrub landcover types. Additional products include classified LAZ files, intensity images, maximum surface height rasters, and 3D breaklines of water bodies within the study area. Ground Condition: Ground conditions contained snow at high elevations and acquisition occurred free of smoke, fog and cloud cover |
| distribution |
[
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"description": "Create custom data files by choosing data area, map projection, file format, etc. A new metadata will be produced to reflect your request using this record as a base.",
"downloadURL": "https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=10419/details/10419",
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"title": "Bulk Download",
"accessURL": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/dem/AK_KachemakBay_DEM_2024_10419/index.html",
"description": "Bulk download of data files in GeoTIFF format, UTM Zone 5N NAD83(2011) meters coordinates and elevations in NAVD88 (GEOID12B) meters.",
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|
| identifier | gov.noaa.nmfs.inport:77562 |
| issued | 2024-01-01T00:00:00.000+00:00 |
| keyword |
[
"EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION",
"EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > DIGITAL ELEVATION/TERRAIN MODEL (DEM)",
"EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION",
"CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA",
"CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALASKA",
"VERTICAL LOCATION > LAND SURFACE",
"LIDAR > Light Detection and Ranging",
"Airplane > Airplane",
"DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce",
"DEMs"
]
|
| landingPage | https://www.fisheries.noaa.gov/inport/item/77562 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2025-01-01T00:00:00.000+00:00 |
| publisher |
{
"name": "Office for Coastal Management",
"@type": "org:Organization"
}
|
| references |
[
"https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocm/dmp/pdf/77562.pdf"
]
|
| rights | otherRestrictions, unclassified |
| spatial | -150.849167,59.222021,-151.995345,59.639355 |
| temporal | 2023-08-01T00:00:00+00:00/2023-08-02T00:00:00+00:00 |
| title | 2024 NOAA Lidar DEM: AK Coastal Communities (Kachemak Bay) |
