Section 3 of this Act, referred to in subsec. (b), is section 3 of Pub. L. 94–199. Subsec. (a) of section 3 added pars. (11) and (12) of section 1274 (a) of this title, relating to components of the national wild and scenic rivers system. Subsec. (b) of section 3, relating to the administration of those segments of the Snake and Rapid Rivers designated as wild or scenic river areas, is set out as a note under section 1274 of this title.

1978—Subsec. (b). Pub. L. 95–625 substituted “May 1978” for “September 1975” to clarify that the boundary between Saulsberry and Freezeout Saddles is the hydrologic divide.

Section 17 of Pub. L. 94–199 provided that: “If any provision of this Act [this subchapter] is declared to be invalid, such declaration shall not affect the validity of any other provision hereof.”