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Author Topic:   Lake Michigan Bathymetry
Hoosier posted 01-20-2015 09:34 AM ET (US)   Profile for Hoosier   Send Email to Hoosier  
"New 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. This bathymetry was compiled at a scale of 1:250,000, with a contour interval of 5 meters. This 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)."

Here's the link that I took the quote from:

http://www.ngdc.noaa.gov/mgg/greatlakes/lakemich_cdrom/start.htm

Hoosier posted 01-20-2015 10:47 AM ET (US)     Profile for Hoosier  Send Email to Hoosier     
After digging deeper I found the link for the other Lakes:

http://www.ngdc.noaa.gov/mgg/greatlakes/greatlakes.html

"By following the lake links at left, you will find available data and imagery, as well as links to data products including posters. The links at right go to all products for all lakes.

Compilation of Great Lakes Bathymetry at NGDC has been suspended, leaving Lake Superior incomplete. We will collect and hold any comments or suggestions for consideration in the event that the project is reactivated in the future."

jimh posted 01-22-2015 05:48 AM ET (US)     Profile for jimh  Send Email to jimh     
David--that's interesting data. Thanks for giving us the links to it.
jimh posted 01-23-2015 10:31 AM ET (US)     Profile for jimh  Send Email to jimh     
In the lake bottom depth images available for Lake Huron and Georgian Bay, one can see that just East of Tobermory and Flowerpot Island lies the deepest portion of Georgian Bay. There is a theory that the unusual flower pot rock formations of Flowerpot Island were created when a great deal of water was suddenly released and flowed very rapidly though the gap around Tobermory and Flowerpot, eroding the rock and shaping those flower pot formations. The presence of that deep area to the East might be related.

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