This bill clarifies and updates the federal cost-sharing arrangement for operating and maintaining the Toussaint River Federal navigation project in Carroll Township, Ohio. The legislation specifies that the cost share for this navigation project should follow the standard cost-sharing formula established in the Water Resources Development Act of 1986, rather than any other arrangement that may have previously applied. The bill affects the U.S. Army Corps of Engineers, which manages federal navigation projects, as well as state and local entities responsible for sharing maintenance costs. The measure takes effect on the first day of the federal fiscal year in which it is enacted and continues to apply to all subsequent fiscal years. No specific funding amounts are authorized in this legislation, as it primarily establishes the cost-sharing policy framework going forward.