Awesome maps! Thank you! You must devote an immense amount of time into this project.
I also noticed that a section of Wisconsin is missing, around N44 32.082, W91 16.147. Also, there is a problem with missing data in Wisconsin near Door county around N45 05.716, W87 11.539. The upper peninsula of Michigan and all of Minnesota is missing the lakes and streams data. All these were present in version 1.4. I also noticed that the Wisconsin lakes and streams are mostly missing, but that was also missing in 1.4.