Mich. Comp. Laws § 485.124
On or before the first Monday in January in each year it shall be the duty of the directors of every company formed under this act, to report to the secretary of state, under the oath of the secretary and 1 or more of the directors, the length of the stream or waters so improved; the cost of such improvements; the amount of money expended; the amount of their capital; how much of the same is paid in and how much is expended; the whole amount of tolls or earnings expended on such improvement; the amount received during the previous years for tolls and from all other sources, stating each separately; the amount set apart for repairs; the amount of dividends made and the amount of indebtedness of such company, specifying the object for which such indebtedness accrued.
MCL 485.124