Water Code § 11139
ARTICLE 4. Aid From State Agencies or Other Sources
The department may enter into an agreement with any state agency to repay any money or the value of any rights of way, labor, materials, or other property advanced or contributed; but no repayment therefor shall be made until all obligations issued by the department for the construction of the project have been fully redeemed and paid, and then only out of the revenues received from the operation of the project.