Description
Item Description:Relief shown by shading.
Depths shown by bathymetric tints.
Title from HTML home page (viewed on June 5, 2008).
First appeared online May 2002.
Includes overview map.
Electronic resource.
Publication Frequency:Updated irregularly
Format:Mode of access: Internet from the NOAA NGDC web site. Address as of 6/5/08: http://map.ngdc.noaa.gov/website/mgg/greatlakesbathy/viewer.htm ; current access via PURL.