Cal. Pub. Cont. Code § 20997

The governing body of the district shall have full authority to cause to be inserted in specifications and contracts for any flood control work financed or paid for in whole or in part out of moneys obtained from the United States of America or any department or agency thereof as a loan, grant, or appropriation, the provisions or terms as may be prescribed by the United States of America or such department or agency as a condition upon which the federal funds are loaned, granted, or appropriated.