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Great Lakes Bathymetry and Shoreline Data

Great Lakes Bathymetric Data Map - Select for larger image

Great Lakes bathymetric data maps (sample above):

Gridded bathymetric data and digitized shorelines for the Great Lakes:

The bathymetric grids consist of an array containing the average lake depths in 2-km squares (1.2-km squares for Lake St. Clair). The digitized shorelines are lists of latitudes and longitudes for closed loops describing lake and island shorelines. Conversion equations for map-to-geographical and geographical-to-map coordinate transformations for all bathymetric grids, as well as the format of the above data is described in the following NOAA technical memo:

Computerized Bathymetry and Shorelines of the Great Lakes
D.J. Schwab and D.L. Sellers
NOAA Data Report ERL GLERL-16

Great Lakes Topographic Relief Map:

More information on Great Lakes bathymetry data:

David J. Schwab
Oceanographer
NOAA Great Lakes Environmental Research Laboratory
4840 S. State Rd.
Ann Arbor, MI 48108-9719 USA
313-741-2120, 313-741-2055 (FAX)
David.Schwab@noaa.gov