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Anchorage, Alaska 8/15 arc-second Coastal Digital Elevation Model

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NOAA's National Centers for Environmental Information (NCEI) is building high-resolution digital elevation models (DEMs) to support individual coastal States as part of the National Tsunami Hazard Mitigation Program's (NTHMP) efforts to improve community preparedness and hazard mitigation. These integrated bathymetric-topographic DEMs are used to support tsunami and coastal inundation mapping. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to various vertical and horizontal datums depending on the specific modeling requirements of each State. For specific datum information on each DEM, refer to the appropriate DEM documentation. Cell sizes also vary depending on the specification required by modelers in each State, but typically range from 8/15 arc-second (~16 meters) to 8 arc-seconds (~240 meters).
  • Cite as: NOAA National Centers for Environmental Information. 2019. Anchorage, Alaska 8/15 arc-second Coastal Digital Elevation Model. NOAA National Centers for Environmental Information. Accessed [date].
  • NCEI Metadata ID:gov.noaa.ngdc.mgg.dem:anchorage_ak_815_mhhw
gov.noaa.ngdc.mgg.dem:anchorage_ak_815_mhhw
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Distribution Formats
  • NetCDF (Version: 4)
  • netCDF (Version: 4 Classic)
Ordering InstructionsContact NCEI for other distribution options and instructions.
DistributorDEM Information
NOAA National Centers for Environmental Information
dem.info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact DEM Information
NOAA National Centers for Environmental Information
dem.info@noaa.gov
Time Period2000-01-01 to 2017-01-01
Spatial Reference Systemurn:ogc:def:crs:EPSG::4326MHHW
Spatial Bounding Box Coordinates
N: 61.6400739245
S: 60.70007423
E: -148.799926251
W: -150.400073879
Spatial Coverage Map
Associated Resources
  • National Tsunami Hazard Mitigation Program
    • Bathymetric Data Viewer (search)
      The Bathymetric Data Viewer is an interactive map providing discovery, descriptions, and download capability for bathymetric survey data and digital elevation models archived at NOAA's National Centers for Environmental Information (NCEI).
  • Marine Geology and Geophysics
Publication Dates
  • publication: 2020-08-14
Data Presentation FormmapDigital
Dataset Progress StatusComplete - production of the data has been completed
Data Update Frequency Not planned
PurposeDeveloped for the University of Alaska at Fairbanks (UAF), Geophysical Institute for tsunami and coastal inundation modeling efforts for the State of Alaska.
Use Limitations
  • Not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For navigation, please refer to the NOS nautical chart series.
  • Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
Dataset Citation
  • Cite as: NOAA National Centers for Environmental Information. 2019. Anchorage, Alaska 8/15 arc-second Coastal Digital Elevation Model. NOAA National Centers for Environmental Information. Accessed [date].
Originators
  • NOAA National Centers for Environmental Information
Publishers
  • NOAA National Centers for Environmental Information
Theme keywordsGlobal Change Master Directory (GCMD) Science Keywords
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
  • Earth Science > Oceans > Coastal Processes > Coastal Elevation
  • {{Add other GCMD science ketywords}}
Data Center keywordsGlobal Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Platform keywordsGlobal Change Master Directory (GCMD) Platform Keywords
  • DEM > Digital Elevation Model
Instrument keywordsGlobal Change Master Directory (GCMD) Instrument Keywords
  • Not applicable
Place keywordsGlobal Change Master Directory (GCMD) Location Keywords
  • Vertical Location > Sea Floor
  • Alaska
  • Cook Inlet
  • Anchorage
Data Resolution keywordsGlobal Change Master Directory (GCMD) Data Resolution Keywords
  • H: 1 meter - < 30 meters
  • V: < 1 meter
Use Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Access Constraints
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Other ConstraintsCite as: NOAA National Centers for Environmental Information. 2019. Anchorage, Alaska 8/15 arc-second Coastal Digital Elevation Model. NOAA National Centers for Environmental Information. Accessed [date].
Fees
  • No Charge
Lineage information for: dataset
Processor
  • NOAA National Centers for Environmental Information
Processing Steps
  • 2020-07-01T00:00:00 - All datasets obtained by NCEI were converted to common horizontal and vertical datums of WGS 84 geographic and Mean Higher High Water, respectively, based on tide station information. They were also converted to common file format, ESRI point shapefiles, for visualization and inspection.
Processing EnvironmentVersion 6.2 (Build 9200) ; Esri ArcGIS 10.6.0.8321
Source Datasets
  • Electronic Navigational Chart (ENC) digital soundings
  • NOS Hydrographic Surveys
    • NOS Hydrographic Survey Database (download)
      Digital database of NOS hydrographic surveys that date back to the late 19th century.
    • Description of Source: NOS hydrographic survey data
    • Temporal extent used: 2007-01-01 to 2009-01-01
  • Bench Mark Data Sheet with Tidal Datum References
    • Tides and Currents Station Selection
      Bench Mark Data Sheet for stations #9455963, #9455934, #9455920, #9455912, #9455866, #9455869, #9455777, #9455760, #9455735, #9455711, #9455732, #9455653, #9455606, #9455558, #9455595, #9455517, #9455500, #9456717, #9455145, #9455146, #9455204, #9455159, #9455151, #9455128, #9455120, #9455090
    • Description of Source: Tidal information table from which vertical datum adjustment information are interpreted
    • Temporal extent used: 1983-01-01 to 2018-11-01
  • 2015 Lidar DEM: Municipality of Anchorage, AK
    • DGGS Elevation Portal (download)
      Alaska Department of Natural Resources, Divison of Geological and Geophysical Surveys, Data Download and Visualization Services
    • Description of Source: Topographic Lidar DEM
    • Temporal extent used: 2015-05-10 to 2015-05-31
  • AFSC/RACE/GAP/Zimmermann: Cook Inlet bathymetry of Alaska Grid
    • Description of Source: Gridded smoothsheet bathymetry
  • Harbor condition survey for Anchorage and Cook Inlet
    • Survey data of Anchorage and Cook Inlet (download)
      Hydrographic Sounding at intervals and topographic data points along Project design lines spaced at specific intervals.
    • Description of Source: Harbor condition survey
    • Temporal extent used: 2012-01-01 to 2020-01-01
  • 1/3rd and 1 arc-second Digital Elevation Models (DEMs) - USGS National Map 3DEP Downloadable Data Collection
    • USGS The National Map (download)
      The National Map Data Download and Visualization Services
    • Description of Source: Digital Elevation Models (DEMs)
    • Temporal extent used: 2013-01-01 to 2019-01-01
  • MatSu Matanuska Area Point Clouds
    • DGGS Elevation Portal (download)
      Alaska Department of Natural Resources, Divison of Geological and Geophysical Surveys, Data Download and Visualization Services
    • Description of Source: Topographic Lidar DTM
    • Temporal extent used: 2011-05-10 to 2011-10-10
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Acquisition Information (collection)
Platform
  • DEM
Last Modified: 2022-09-13
For questions about the information on this page, please email: ncei.info@noaa.gov