Bathymetry of Lake Michigan

Description

Bathymetry of Lake Michigan has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more accessible to the public. The project is a cooperative effort between investigators at the NOAA National Geophysical Data Center's Marine Geology & Geophysics Division (NGDC/MGG) and the NOAA Great Lakes Environmental Research Laboratory (GLERL). was compiled utilizing the entire historic sounding data base. This bathymetry resolves physiography of the lake floor to an extent that known features are revealed more accurately and features never before seen are revealed for the first time. Bathymetry has been compiled using the entire array of good-quality historical hydrographic soundings collected in support of nautical charting over a 120-year period by the NOAA National Ocean Service and its predecessor agency for Great Lakes surveying, the Army Corps of Engineers. More than 600,000 bathymetric soundings were employed, of which approximately 60 per cent were already in digital form, 25 per cent were digitized in conjunction with this effort, and the remaining 15 per cent were available only on paper survey sheets. Bathymetry was compiled at a scale of 1:250,000, with a contour interval of 5 meters. Density of tracklines is generally about 2000m for the open lake and ranges from 200m to 600m for nearshore areas. Soundings collected since 1903 were already reduced to the Lake Michigan mean low water datum; these were used for bathymetric contouring without further calibration or adjustments. Soundings collected prior to 1903 were reduced to the mean low water datum. In preparation for bathymetric contouring, digital soundings were converted to metric units and plotted in color; separate colors were assigned to the various depth ranges. From the paper sheets, contours in metric units were generated directly on overlays; these contours were then reduced to the compilation scale of 1:250,000 and incorporated into the map. Compilation sheets were then scanned and vectorized; and the resulting digital vector bathymetric contour data were used to generate the imagery shown on the large color plate. Images were constructed using the publicly-available software Generic Mapping Tools (GMT).

Resources

Name Format Description Link
50 online tool for grid extract http://maps.ngdc.noaa.gov/viewers/wcs-client/
21 home page for Lake Michigan bathymetry data https://www.ngdc.noaa.gov/mgg/greatlakes/michigan.html
21 This bathymetry of Lake Michigan provides a detailed look at the lake floor topography and serves as a GIS base layer for many applications. https://www.ngdc.noaa.gov/mgg/greatlakes/michigan.html
0 https://www.ncei.noaa.gov/products/coastal-elevation-models
0 NOAA GeoPlatform listing for NCEI Digital Elevation Model (DEM) Extents https://noaa.maps.arcgis.com/home/item.html?id=0afa88a1701749dbbf76fcadca4f77f3
0 NOAA GeoPlatform listing for DEM Global Mosaic (Elevation Values) https://noaa.maps.arcgis.com/home/item.html?id=c876e3c96a8642ab8557646a3b4fa0ff
0 Shaded relief visualization of a global seamless bathymetry/topography mosaic of digital elevation models at NOAA/NCEI. https://noaa.maps.arcgis.com/home/item.html?id=e11ebaeb19544bb18c2afe440f063062
0 An image service providing access to bathymetric/topographic digital elevation models stewarded at NOAA's National Centers for Environmental Information. Either individual DEMs or small subsets can be accessed through this service. https://noaa.maps.arcgis.com/home/item.html?id=e9ba2e7afb7d46cd878b34aa3bfce042
0 Text search for locating completed and planned DEMs. https://www.ngdc.noaa.gov/mgg/coastal
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
23 REST endpoint for Digital Elevation Models Global Mosaic (Color Shaded Relief) ArcGIS image service https://gis.ngdc.noaa.gov/arcgis/rest/services/DEM_mosaics/DEM_global_mosaic_hillshade/ImageServer
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 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). https://www.ncei.noaa.gov/maps/bathymetry/
21 Please see website for more information about Coastal DEMs. https://ngdc.noaa.gov/mgg/coastal/coastal.html
0 A map service showing the location and coverage of land and seafloor digital elevation models (DEMs) available. https://noaa.maps.arcgis.com/home/item.html?id=d41f39c8a6684c54b62c8f1ab731d5ad
52 Capabilities document for Open Geospatial Consortium Web Map Service for Digital Elevation Models Global Mosaic (Color Shaded Relief) https://gis.ngdc.noaa.gov/arcgis/rest/services/DEM_mosaics/DEM_global_mosaic_hillshade/ImageServer/WMSServer?request=GetCapabilities&service=WMS
23 REST endpoint for NCEI Digital Elevation Model (DEM) Extents ArcGIS Feature Service https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/ncei_dem_extents/FeatureServer
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 NOAA GeoPlatform listing for Digital Elevation Models Global Mosaic (Color Shaded Relief) https://noaa.maps.arcgis.com/home/item.html?id=feb3c625dc094112bb5281c17679c769

Tags

  • digital elevation model
  • topography
  • terrestrial hydrosphere
  • surface water features
  • surface water processes/measurements
  • united states of america
  • international council for science - world data system
  • infoterra
  • nesdis
  • icsu-wds
  • geomorphology
  • bathymetry
  • oceans
  • water channels
  • environmental monitoring
  • ocean/lake records
  • continent
  • national geophysical data center
  • noaa
  • baseline studies
  • monitoring data
  • paleoclimate
  • dem
  • lakes/reservoirs
  • geology
  • north america
  • multibeam
  • coastlines
  • stratigraphic sequence
  • u.s. department of commerce
  • earth science
  • doc/noaa/nesdis/ngdc
  • bathymetry/seafloor topography
  • doc/noaa/nesdis/ncei
  • lacustrine
  • geography and land cover
  • models/analyses
  • environmental information
  • gis
  • sediments
  • subject disciplines
  • water depth
  • lithosphere
  • great lakes
  • surface water
  • national centers for environmental information

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