Mich. Comp. Laws § 750.493b: Well or cistern; abandoning or failing to keep safely covered or fenced; depth and width.

Sec. 493b.

Any person who shall knowingly abandon or fail to keep safely covered or fenced any well or cistern of a depth of 4 feet or more and with a top width of 12 inches or more on property owned or occupied by such person shall be guilty of a misdemeanor.