Garmin LakeMaster Dakotas Map (microSD/SD Card) Contains coverage of more than 300 lakes in the Dakotas, including Big Stone Lake, Traverse Lake, Devils Lake, Lake Oahe, Bitter Lake, Cattail Lake, Clear Lake, Kampeska Lake, Kettle Lake, Lynn Lake, Pickerel Lake, Thompson Lake and Waubay Lake 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