Whitefish Lake (MN) Bathymetry Map
I made this depth model of Minnesota's Whitefish Lake, and some of the adjoining lakes, using bathymetric data from the Minnesota Geospatial Information Office. The model's z-scale is true to actual depth, which, as you can see, is a little underwhelming relative to length, so I'd suggest exaggerating the z-scale in your print.