| Location |
Lake Michigan, Lake Street, Grand Mere State Park, Hoffmaster, Silver Lake State Park, Ludington State Park, Platte Bay, Sleeping Bear Dunes, Nine Mile Point, Wilderness State Park, St. Ignace, Pointe Aux Chenes, Stony Point Beach, Bailey County, Whitefish Dunes, Point Beach State Park, Kohler-Andrae State Park, Illinois Beach, Platte River, Point Betsy, Empire, Bar Lake, Sleeping Bear Point, Otter Creek, Illinois Beach State Park, , Indiana Dunes National Lakeshore |
| Summary |
GPS benchmarks collected and surveys completed between 1988-10-17 to 1998-10-27, 1989-05-16 to 1989-05-25, 1989-06-22 to 1989-07-14, 1989-12-08 to 1989-12-14, 1990-05-08 to 1990-05-17, 1992-06-12, to 1992-06-17, 1993-09-18 to 1993-09-23. and 1994-09-20 to 1994-20-23 |
