The board may enter into a contract or other obligation with the United States for the following purposes:
(1) to construct, operate, and maintain necessary facilities to deliver and distribute water;
(2) to drain district land;
(3) to assume debt for district land;
(4) to rent temporarily United States water for use on district land under the federal reclamation laws; or
(5) to furnish a water supply to the district under any act of Congress which authorizes it.