This is a list of the designated National Wild and Scenic Rivers in the United States. Each river has been designated by Congress, or, if certain requirements were met, the Secretary of the Interior. A designation may include multiple watercourses; for example, the Saint Croix National Scenic Riverway includes the Namekagon River as well as the St. Croix River. Rivers are managed by one or more federal, state, local government agencies. Only federal agencies are listed in this table. Abbreviations used are: