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Summary

DescriptionLake Michigan bathymetry map.png	English: Lake Michigan bathymetric shaded relief map contoured with interval 25 m (100 m with thicker lines). The deepest point is marked with "×". For land the vertical datum is sea level, for bathymetry low water datum of the lake. The map was created using the Generic Mapping Tools, GMT, version 5.1.1.
Date	4 April 2015
Source	Own work using: the following Public Domain datasets (grids): Great Lakes Bathymetry from National Geophysical Data Center http://www.ngdc.noaa.gov/mgg/greatlakes/greatlakes.html. Credits: National Geophysical Data Center, 1996. Bathymetry of Lake Michigan. National Geophysical Data Center, NOAA. doi:10.7289/V5B85627 [access date: 2015-03-23]. National Geophysical Data Center, 1999. Bathymetry of Lake Huron. National Geophysical Data Center, NOAA. doi:10.7289/V5G15XS5 [access date: 2015-03-23]. (only small portion of this map) GLOBE http://www.ngdc.noaa.gov/mgg/topo/gltiles.html - land part of this map. Credits: National Geophysical Data Center, 1999. Global Land One-kilometer Base Elevation (GLOBE) v.1. Hastings, D. and P.K. Dunbar. National Geophysical Data Center, NOAA. doi:10.7289/V52R3PMS [access date: 2015-03-16]. The coordinates of deepest point are taken from the NOAA Great LakesEnvironmental Research Laboratory webpage ( www.glerl.noaa.gov/, kml file Google Earth Great Lakes Tour). The color palette of the depth scale was made to be more or less similar to the color palettes used on the NGDC Lake Michigan maps. This map was created with GMT.
Author	Darekk2 using the Great Lakes Bathymetry and GLOBE tiles
Other versions	The same map but not shaded: Lake Michigan bathymetry map 2.png

Licensing

Attribution (in addition to the author of this map):
The NGDC in it's copyright notice says:
As required by 17 U.S.C. 403, third parties producing copyrighted works consisting predominantly of the material produced by U.S. government agencies must provide notice with such work(s) identifying the U.S. Government material incorporated and stating that such material is not subject to copyright protection within the United States. (...)
(for credits see the Source section).

This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.

Attribution: The author of the work
and Great Lakes Bathymetry and GLOBE
(see above and the Source section)

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Information

File history

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	Date/Time	Dimensions	User	Comment
current	12:24, 10 May 2015	597 × 1,024 (948 KB)	Darekk2	a small island in NE
	16:36, 9 May 2015	597 × 1,024 (948 KB)	Darekk2	the lakes tiles better assembled, retouched western part of Green Bay
	22:31, 9 April 2015	597 × 1,024 (948 KB)	Darekk2	replaced contours generated by GMT program by contours downloaded from the NOAA website; added some annotations to contours; made contours 100 and 200 m bold; added rivers and minor lakes; moved Lake Michigan label and Chicago circle
	13:29, 4 April 2015	597 × 1,024 (942 KB)	Darekk2	User created page with UploadWizard