33 U.S.C. § 31 : US Code - Section 31: Iowa River, Iowa, above Toolsboro

Search 33 U.S.C. § 31 : US Code - Section 31: Iowa River, Iowa, above Toolsboro

So much of the Iowa River within the State of Iowa, as lies north
of the town of Wapello, and so much of the said river within the
State of Iowa, as lies between the town of Toolsboro and the town
of Wapello, in the county of Louisa, shall not be deemed a
navigable river or public highway, but dams and bridges may be
constructed across it.