Notes on lake depth maps, the Upper Peninsula lakes we map, and gift ideas for the people who love them.
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Depth map or contour map: which lake design should you choose?
Our lakes come as minimal contour maps in light and dark and as shaded depth maps. Here is how to pick the right one for a shirt, mug or wall.
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What is a lake depth contour map?
Contour lines show a lake’s underwater shape. Here is how to read them, where Michigan’s lake maps come from and why they make good gifts.