Mike's Maps has been creating detailed GPS lake maps of South Dakota lakes, reservoirs and sloughs since 1998. Their maps provide GPS coordinates to structural elements that other mapping companies haven't taken the time research.
A detailed lake map is an invaluable tool before heading out onto a body of water. Spend a little research time on shore to increase your results on the water.
All maps are printed on synthetic paper.
Mke's Maps are affordable, durable and they float!