Garmin MapSource U.S. Inland Lakes North Central Freshwater Map microSD Card Contains coverage of freshwater lakes in North and South Dakota, Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Nebraska, Ohio, and Wisconsin Includes lakes with high-definition shoreline and bathymetric detail Provides data on tide prediction stations, U.S. Coast Guard aids to navigation, and wrecks and obstructions Includes rivers, streams, and river and creek channels Includes interstates, highways and general roads