California Code, Water Code - WAT § 12055

(a) As a provision of any contract entered into pursuant to subdivision (b) of Section 12054, and for the purpose of securing its performance thereunder, the department may assign rights which have accrued or which will accrue to the department from the execution of any contract entered into pursuant to the provisions of Section 12052.

(b) Such rights may be assigned notwithstanding the fact that no contract pursuant to the provisions of Section 12052 has, at the time of assignment of rights to accrue thereunder, been executed, the provisions of Section 1045 of the Civil Code or of any other provision of law to the contrary notwithstanding.  The department may require, as a condition precedent to its duty to perform any obligation incurred by virtue of its entry into any contract pursuant to subdivision (b) of Section 12054, the subsequent execution of any contract to be entered into by the department pursuant to Section 12052 which is to create the rights assigned.

(c) The department is authorized to require such assurances from public agencies, in the form of covenants in contracts to which it is a party under the provisions of subdivision (b) of Section 12054, as are in the judgment of the department necessary and proper to the execution of the intent expressed by this part.