Mich. Comp. Laws § 45.8: Wayne, Macomb and St. Clair counties; common jurisdiction as to Lake St. Clair.

Sec. 8.

The counties of Wayne, Macomb and St. Clair, shall have jurisdiction, in common, of all offences committed on that part of Lake St. Clair which lies within the limits of this state; and such offences may be heard and tried in either of said counties in which legal process against the offender shall be first issued, in like manner, and to the same effect as if the offence had been committed in any part of either of said counties.