LANDFIRE 2020 Elevation (Elev) AK
In late 2021 the LANDFIRE (LF) team responded to feedback and created new topographic products (Elevation, Slope, and Aspect) for the Conterminous US, Alaska, Hawaii, and Puerto Rico and the Virgin Islands to release in early 2022. To create the new LF 2020 Elevation product, 1 arc-second (approx. 30 meters) Digital Elevation Model (DEM) tiles were downloaded from The National Map (TNM) Downloader (v2.0) on Nov. 16, 2021. Several missing locations especially along coastal areas and a 90km buffer into Canada were filled using 1/3 arc-second DEM (approx. 10 meters), 2 arc-second DEM (approx. 60 meters), or ASTER DEM 1 arc-second V003 (search.earthdata.nasa.gov/search) in order of priority. The tiles were mosaicked in the native coordinate system (GCS_North_American_1983 WKID: 4269 Authority: EPSG) and format (32-float). The file was projected to NAD_1983_Alaska_Albers (WKID: 3338 Authority: EPSG) using the Project Raster tool in ArcGIS Desktop 10.6.1 with Bilinear Interpolation resampling method, cell size and spacing set to the LF grid. This file was used to calculate aspect and slope. The file was then converted to Signed 16-bit using the Copy Raster tool in ArcGIS Desktop 10.6.1 and then clipped to the LF boundary using the Extract by Mask tool in ArcGIS Desktop 10.6.1. Several NoData areas and erroneous negative values along coastal areas were assigned value zero (0) that overlap the LF data extent which includes a 3 nautical mile buffer along coastal areas. -9999 indicates NoData.
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Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey", "@type": "vcard:Contact", "hasEmail": "mailto:helpdesk@landfire.gov" } |
| description | In late 2021 the LANDFIRE (LF) team responded to feedback and created new topographic products (Elevation, Slope, and Aspect) for the Conterminous US, Alaska, Hawaii, and Puerto Rico and the Virgin Islands to release in early 2022. To create the new LF 2020 Elevation product, 1 arc-second (approx. 30 meters) Digital Elevation Model (DEM) tiles were downloaded from The National Map (TNM) Downloader (v2.0) on Nov. 16, 2021. Several missing locations especially along coastal areas and a 90km buffer into Canada were filled using 1/3 arc-second DEM (approx. 10 meters), 2 arc-second DEM (approx. 60 meters), or ASTER DEM 1 arc-second V003 (search.earthdata.nasa.gov/search) in order of priority. The tiles were mosaicked in the native coordinate system (GCS_North_American_1983 WKID: 4269 Authority: EPSG) and format (32-float). The file was projected to NAD_1983_Alaska_Albers (WKID: 3338 Authority: EPSG) using the Project Raster tool in ArcGIS Desktop 10.6.1 with Bilinear Interpolation resampling method, cell size and spacing set to the LF grid. This file was used to calculate aspect and slope. The file was then converted to Signed 16-bit using the Copy Raster tool in ArcGIS Desktop 10.6.1 and then clipped to the LF boundary using the Extract by Mask tool in ArcGIS Desktop 10.6.1. Several NoData areas and erroneous negative values along coastal areas were assigned value zero (0) that overlap the LF data extent which includes a 3 nautical mile buffer along coastal areas. -9999 indicates NoData. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/P1LJEZ3G", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.6a160ba2b66b013d45990bde.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_6a160ba2b66b013d45990bde |
| keyword |
[ "AK", "Alaska", "Elevation", "LF 2020", "OCONUS", "U.S. Geological Survey (USGS)", "US", "USGS:6a160ba2b66b013d45990bde", "United States", "biota", "fires", "geographic information systems", "geospatial datasets", "hazard preparedness", "image collections", "raster digital data", "remote sensing", "topo", "topography" ] |
| modified | 2026-07-23T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -179.3173, 48.8767, -122.0000, 71.5478 |
| theme |
[ "geospatial" ] |
| title | LANDFIRE 2020 Elevation (Elev) AK |
