Lake Michigan setbacks
The Michigan.gov website contains a link to a map of Ganges Township and associated high risk erosion zones here:
There are three Areas- A, B, and C that appear to have slightly different setbacks within Ganges Township. Areas B anc C have a 65' and 115' setback for 30 and 60 year setback. Area A has 70' and 130' for the same time periods.
I hope that this answers your question. For more information on the High Risk Erosion program or to look at other community maps: https://www.michigan.gov/egle/0,9429,7-135-3311_4114-344443--,00.html
Mary Reilly (Manistee County)