About Fish Atlas

Fish Atlas has been developed by Illinois-Indiana Sea Grant and Purdue University to provide easy access to long-term fisheries data from Lake Michigan. These data have been recorded by charter boat captains in logbooks that are managed by the Illinois, Michigan and Wisconsin Departments of Natural Resources. For more information on each of these organizations, please click their logos below:

Charter boat catch data are recorded for each grid cell shown on the map. These grids are approximately 10 miles x 10 miles in size, and provide insight into lake-wide trends without compromising the confidentiality of specific fishing spots.

Fish Atlas includes total catch and catch rate data for Chinook Salmon, Coho Salmon, Rainbow Trout (Steelhead), Brown Trout and Lake Trout.

For more information about the fisheries data or the website, please contact Dr. Mitchell Zischke.