The LakeMaster® Pro Maps Minnesota card contains shorelines for 25,000 lakes and ponds. 10,000 of these are named. 268 are Lowrance enhanced lake maps with detailed shoreline and depth contours, and many of these offer other features such as weed symbols, navaids, hazards, and more. 59 of the 268 enhanced lakes contain LakeMasterr Pro high-detail surveyed depth contours.