I you are wanting high definition detail of KY/Barkley you will need to purchase a 07 or newer Navionics chip. An 06 or older chip will have bottom contour details but the new chips have high definition details showing better countour details.

The map card may show where a stump flat is located but the map card does not show a specific stump in a particular area. If you are wanting to know where a particular stump is located you will have to find it and then mark it as a way point. Here is the best way I can describe the map... it shows information just like a topographical paper map but in a digital format on your gps screen.