Iowa v. Illinois

The Mississippi Biver flows between the States of Iowa and Illinois. It is a navigable stream and constitutes the boundary between the two States; and the controversy between them is as to the position of the line between its banks or shores which separates the jurisdiction of the two States for the purposes of taxation and other purposes of government.

The complainant, the State of Iowa, contends that, for taxation, and. for all other purposes, the boundary line is the middle of the main body of the river, taking the middle line between its banks or shores without regard to the “ steamboat…