Spend the day fishing, boating or just enjoying the water on thousands of lakes and waterways in Wisconsin. LakeMaster Wisconsin has detailed coverage of more than 2,500 lakes with high-definition depth contours and lake bottom information structure created from on-the-water surveys. LakeMaster maps also include rivers, streams, channels, islands, inlets, boat ramps and access points, hazards, and aquatic vegetation, as well as full statewide road coverage.