Cal. Wat. Code § 12670.12
With regard to the project for flood control authorized in Section 12670.10, the Sacramento Area Flood Control Agency may join the department or the Reclamation Board in providing the Secretary of the Army with the assurances of nonfederal cooperation required by the Water Resources Development Act of 1996, and may, in conjunction with the Department of the Army, carry out the project with the modifications and amendments that may be necessary to fulfill the purposes of Chapter 1 (commencing with Section 12570) and this chapter. The Sacramento Area Flood Control Agency shall be reimbursed pursuant to Section 12585.5 for any project costs that the agency advances on behalf of the department or the Reclamation Board, provided that prior to any such reimbursement, the agency shall execute an agreement with the department under which it agrees to indemnify and hold the state harmless from damages due to the construction, operation, or maintenance of the project and agrees to operate, maintain, repair, replace, and rehabilitate the project.
Ca. Water Code § 12670.12