Cal. Water Code § 44082

As partial consideration for privileges obtained by the district under contract with the United States, any rights of way or rights to water or other property owned or acquired by the district may be conveyed by the board to the United States insofar as the same may be needed for the construction, operation, and maintenance of works by the United States for the benefit of the district under any contract that may be entered into with the United States pursuant to the provisions of this chapter.