What happens when a river authorized for study under Section 5(a) of the Wild & Scenic Rivers Act is determined not suitable for designation?

Regardless of the study agency’s eligibility and suitability findings, a Section 5(a) study river is protected by the conditions and restrictions specified in Sections 7(b), 8(b), 9(b), and 12(a) of the Wild & Scenic Rivers Act during the period of the study, plus up to three years after the required report is submitted to Congress. In other words, these protections are independent of the recommendation of the study, allowing for Congressional consideration.

Source
Interagency Wild & Scenic Rivers Council