; and (ii) other water diversion, storage, and carriage structures. (B) No effect on existing water resource facilities Nothing in this section shall alter, modify, or affect— (i) the use, operation, maintenance, repair, construction, reconfiguration, expansion, or replacement of a water resource facility downstream of a wild and scenic river segment designated by this section, provided that the physical structures of such facilities or reservoirs shall not be located within the river areas designated in this section; or (ii) access to a water resource facility downstream of a wild and scenic river segment designated by this section. (C) No effect on new water resource facilities Nothing in this section shall preclude the establishment of new water resource facilities (including instream sites, routes, and areas) downstream of a wild and scenic river segment designated by this section. (2) Limitation Any new reservation of water or new use of water pursuant to existing water rights held by the United States to fulfill the purposes of the Wild and Scenic Rivers Act ( 16 U.S.C. 1271 et seq.) shall be for non-consumptive instream use only within the segments designated by this section. (3) Existing law Nothing in this section affects the implementation of the Endangered Species Act of 1973 ( 16 U.S.C. 1531 et seq.). 304. Water rights (a) Statutory construction Nothing in this title and no action to implement this title— (1) shall constitute or be construed to constitute either an express or implied reservation of any water or water rights or authorizing an expansion of water use pursuant to existing water rights held by the United States with respect to the land designated as a wilderness area or wilderness addition by section 302(a) or land adjacent to the wild and scenic river segments designated by the amendment made by section 303(a); (2) shall affect, alter, modify or condition any water rights in the State existing on the date of enactment of this Act, including any water rights held by the United States