Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.48706

Sec. 48706. Except as otherwise provided by law, a person shall not fish with any kind of seines or nets within a radius of 100 feet of or from any dam, frighten or hinder fish from the free passage up or down a fish chute or ladder, or place any obstruction or device in or across any race, stream, or river in this state in a manner that obstructs the free passage of fish up and down the race, stream, or river. For the purpose of this part, a dam is an artificial barrier or obstruction placed in a river or stream in this state which changes the natural elevation of the water level more than 2 feet.