Michigan has hydrocology maps for each county that we use. NOAA has all the maps for the great lakes.

These are the two paper sources we utilize unless there is another map source available. We have found many of the chips available to not be accurate and not include much of the correct contour information.

We stay away from paper copies produced by these companies. Garmin maps and lowrance maps are some of the best available. PM me if you want to know what we stay away from. I hate publicly putting out that information because it always hurts someone's feelings.

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