Garmin LakeVü g3 Ultra U.S. - WestLakeV g3 Ultra U. S. West The Premier Freshwater Fishing Map Provides industry leading coverage, clarity and detail for more than 17,000 lakes with 1 contours that feature integrated Garmin and Navionics data Auto Guidance technology uses your desired depth and overhead clearance to calculate routes and show a suggested path to follow Coverage for more than 17,000 lakes, of which more than 150 are Garmin Elite survey lakes with up to 1 contours High