(a) The board of a district organized under the provisions of Article XVI, § 59, of the Texas Constitution to irrigate arid land may contract with the United States for the investigation, construction, extension, operation, and maintenance of any federal reclamation project of benefit to the district and authorized under the National Reclamation Act of 1902, as amended.
(b) The board may contract to secure a district water supply from the federal reclamation project and to pay to the United States the agreed cost of it in the form of construction charges, operation and maintenance charges, and water rental charges, as shown by the contract and in accordance with the terms and conditions of the national reclamation law.