Please use the following resources to learn more about observational buoys in the Great Lakes and around the world.

Buoy Data:

National Data Buoy Center (NDBC)

NDBC, zoomed in on southern Lake Michigan

Great Lakes Observing Systems (GLOS)

Great Lakes Buoys

Great Lakes Webcams:

LimnoTech Webcam Gallery

Great Lakes Environmental Research Laboratory Webcams

Wind and Wave Data:

NOAA Great Lakes Coastal Forecasting System (GLFCS)


Owned by
Illinois Indiana Sea Grant and Purdue University Civil Engineering


Located four miles off Michigan City

(N41.75532, W86.96847)

The buoy is located in about 62’ of water. Attached to a ton-weight concrete anchor, the 500-lb buoy can be seen with 7’ above the surface and 8’ below. The buoy is outfitted with a flashing beacon light as required by law.

Illinois-Indiana Sea Grant
Purdue University
195 Marsteller Street
West Lafayette, IN 47907-2033
University of Illinois Extensio
Sea Grant
Purdue University