LakeMaster's all new North and South Dakota map card will make you stop and look twice. The Dakotas edition includes High-Definition 1-foot Contours for 15 lakes in North Dakota, South Dakota, and the SD/MN border. Devils Lake has been updated with a new shoreline, points of interest, and contours for New Mill Bay! Also includes Lake Oahe. Additionally, this map card includes depth contours on Lake Sakakawea and hundreds of other lakes, public accesses, thousands of named lakes, detailed roads, highways and cities. Product is available in Garmin® MapSource CD-ROM, pre-programmed data card, or microSD card formats.