Garmin LakeMaster Michigan (microSD(TM)/SD(TM) card ) Contains coverage of more than 2,500 lakes in Michigan including Arbutus, Bellaire, Belleville, Bond Falls Flowage, Cass, Clam, Fenton, Gogebic, Gun, Hardy Pond, Intermediate Chain, Lakeville, Long, Lotus, Macaday, Pontiac, Spider, and St. Helen Provides detailed shorelines and depth contours, including 1-foot contours for many lakes created from on-the-water surveys Displays islands, reefs, points, bays, inlets, access points, boat ramps and aquatic vegetation Includes rivers, streams, river and creek channels, interstates, highways, and general roads