Cal. Water Code § 74616

The board may accept, on behalf of the district, appointment of the district as fiscal agent of the United States, or authorization of the district by the United States to make collection of money for, and on behalf of, the United States, and to assume the duties and liabilities incidental thereto. The board may do any and all things required by the federal statutes now or hereafter enacted in connection therewith, and all things required by any rules or regulations now or hereafter established under any such federal statutes.