What is the responsibility of the federal study agency for a river authorized for study under Section 5(a) of the Wild & Scenic Rivers Act and found eligible, pending a suitability determination?

Once such a river has been found eligible, the federal study agency should, to the extent it is authorized under the Wild & Scenic Rivers Act and subject to valid existing rights, ensure the river and the surrounding area are protected as a potential wild and scenic river pending a suitability determination.