As mentioned in the previous post, the IDNR in cooperation with the staff of the Lake and River Enhancement Section (LARE) of the Division of Fish and Wildlife have been generating updated topographic maps of many of our Indiana lakes, about 70 to date. These maps use GPS in combination with depth soundings and mapping software to create a lake map with 5 foot contours, which is considerably better than the old 10' contour maps. No, they're not the super hi-res stuff many private companies are putting out, but they are a definite improvement over the old maps, especially considering that many lakes were never mapped in the first place and can only be had by using/altering USGS Quad maps. Plus, they're available for free download and use 24/7 at the IDNR bathymetry web page (link above).
Two popular lakes which were recently surveyed are West Boggs down in southwest Indiana, and Lake Waveland over in the west central part of the state. Both are very popular tournament destinations for bass anglers. The West Boggs map is going to take a while to create due to size and time constraints, and probably won't be available until sometime this winter. The Lake Waveland map has been completed and is just awaiting upload to the IDNR bathymetry page, which is usually done after they've gathered a few new ones to post. I was able to obtain a copy of the Waveland map courtesy/credit of the IDNR, and have it available at the link below while we wait for official webpage upload.