The Wild & Scenic Rivers Act requires that detailed boundaries portrayed on maps be established and submitted to Congress within one year of designation. Agencies may finalize boundaries through their respective land management planning process.
Pending the establishment of detailed river boundaries, the Wild & Scenic Rivers Act specifies that the interim boundary is one-quarter mile on each side of the river as measured from the ordinary high water mark.
Section 3(b) of the Wild & Scenic Rivers Act states:
The agency charged with the...