; or (ii) unreasonably diminish the resource values described in sections 101(b) and 201(b) of the Dolores River within the covered land; or (B) located outside the covered land that would unreasonably diminish the resource values described in sections 101(b) and 201(b) of the Dolores River within the covered land. (2) Limitations Subject to the requirements of this section, nothing in paragraph (1)— (A) prevents, outside the covered land— (i) the construction of small diversion dams or stock ponds; (ii) new minor water developments in accordance with existing decreed water rights; or (iii) minor modifications to structures; or (B) affects access to, or operation, maintenance, relicensing, repair, or replacement of, existing water resource projects. (d) Effect Nothing in this Act— (1) affects— (A) any water right that is— (i) decreed under the laws of the State; and (ii) in existence on the date of enactment of this Act; (B) the use, allocation, ownership, or control, in existence on the date of enactment of this Act, of any water or water right; (C) any vested absolute or decreed conditional water right in existence on the date of enactment of this Act, including any water right held by the United States; (D) any interstate water compact in existence on the date of enactment of this Act; or (E) State jurisdiction over any water law, water right, or adjudication or administration relating to any water resource; (2) imposes— (A) any mandatory streamflow requirement within the covered land; or (B) any Federal water quality standard within, or upstream of, the covered land that is more restrictive than would be applicable if the covered land had not been designated as the Conservation Area or Special Management Area under this Act; or (3) constitutes an express or implied reservation by the United States of any reserved or appropriative water right within the covered land. 403. Effect on private property and regulatory authority (a) Effect Nothing in this Act— (1) affects valid existing rights