I have created and added a chart for Optimal Fish Temperatures plus upper and lower limit. If anyone notices anything incorrect, or has resources citing different data, please let me know.
This can be found under the Resources tab and is called Temp Zones.
The South End provides useful resources and discussion forums for those that fish The South End of Lake Michigan for Salmon, Steelhead, Perch, and Bass as well as elsewhere in the Region and Chicago area.