I did some fishing in Buffalo and Brewers this weekend and did some mapping with my Navionics App and Lowrance with Wifi. You can also use the Vexilar SonarPhone to do this. This is unprocessed once processed the islands that are overwritten with the map app will be added back in. If you have a Navionics Hotmaps Platinum or Navionics + with Freshest Data subscription you can update your card with this info in a week or so
Also below the dam