; or (B) the modification of the terms and conditions of groundwater withdrawal, guidance and reporting procedures, or conservation and source protection measures established by a State. 5. Effect (a) Reclamation contracts Nothing in this Act in any way interferes with any existing or future Bureau of Reclamation contract entered into pursuant to Federal reclamation law (the Act of June 17, 1902 (32 Stat. 388, chapter 1093), and Acts supplemental to and amendatory of that Act). (b) Endangered species act Nothing in this Act affects the implementation of the Endangered Species Act of 1973 ( 16 U.S.C. 1531 et seq. ). (c) Federal reserved water rights Nothing in this Act limits or expands any existing or future reserved water rights of the Federal Government on land administered by the Secretary. (d) Federal power act Nothing in this Act limits or expands authorities pursuant to sections 4(e), 10(j), or 18 of the Federal Power Act ( 16 U.S.C. 797(e) , 803(j), 811). (e) Indian water rights Nothing in this Act limits or expands any existing or future reserved water right or treaty right of any federally recognized Indian Tribe. (f) Federally held state water rights Nothing in this Act limits the ability of the Secretary, through applicable State procedures, to acquire, use, enforce, or protect a State water right owned by the United States. (g) Interstate Compacts Nothing in this Act affects an allocation contained in, or limitations and requirements of, any interstate water compact or decree of the Supreme Court of the United States interpreting or enforcing an interstate water compact.