1. Short title This Act may be cited as the Nashua River Wild and Scenic River Act of 2018 . 2. Nashua wild and scenic rivers, Massachusetts and New Hampshire (a) Designation of wild and scenic river segments Section 3(a) of the Wild and Scenic Rivers Act ( 16 U.S.C. 1274(a) ) is amended by inserting after paragraph (212) the following: (213) Nashua, Squannacook, and Nissitissit wild and scenic rivers, Massachusetts and New Hampshire (A) The following segments in the Commonwealth of Massachusetts and State of New Hampshire, to be administered by the Secretary of the Interior as a scenic river: (i) The approximately 27-mile segment of the mainstem of the Nashua River from the confluence of the North and South Nashua Rivers in Lancaster, Massachusetts, and extending north to the Massachusetts-New Hampshire border, except as provided in subparagraph (B). (ii) The approximately 16.3-mile segment of the Squannacook River from its headwaters in Ash Swamp, Townsend, Massachusetts, extending downstream to the confluence of the river with the Nashua River in Shirley/Ayer, Massachusetts, except as provided in subparagraph (B). (iii) The approximately 9.5-mile segment of the Nissitissit River from its headwaters in Brookline, New Hampshire, to the confluence of the river with the Nashua River in Pepperell, Massachusetts. (B) Exclusion areas The designation of the river segments in subparagraph (A) shall exclude— (i) with respect to the Ice House hydroelectric project (FERC P–12769), from 700 feet upstream from the crest of the dam to 500 feet downstream from the crest of the dam; (ii) with respect to the Pepperell hydroelectric project (FERC P12721), from 9,240 feet upstream from the crest of the dam to 1,000 feet downstream from the crest of the dam