Camping is often important to the enjoyment of wild and scenic rivers. As appropriate, and when private interests do not provide sufficient facilities, the federal managing agency attempts to provide them on federal lands. As a condition of use, consistent with river classification and the management objectives for the river area, the managing agency may specify that camping will be permitted only in designated locations. Enforcement of camping restrictions and limitations can be through indirect means (brochures, maps, signs, etc.) and/or direct means (permits, enforcement personnel, etc.).
Source
Interagency Wild & Scenic Rivers Council