United States v. Riverside Bayview, 474 U.S. 121 (1985), was a United States Supreme Court case challenging the scope of federal regulatory powers over waterways as pertaining to the definition of "waters of the United States" as written in the Clean Water Act of 1972. The Court ruled unanimously that the government does have the power to control intrastate wetlands as waters of the United States. This ruling was effectively revised in Rapanos v. United States (2006), in which the Court adopted a very narrow interpretation of "navigable waters."