In carrying out the purposes of the Act of June 17, 1902 (32 Stat. 388), and Acts amendatory thereof and supplementary thereto and known as the reclamation law, the Secretary of the Interior may enter into contract with any legally organized irrigation district whereby such irrigation district shall agree to pay the moneys required to be paid to the United States, and in such event water-right applications on the part of landowners and entrymen, in the discretion of the Secretary of the Interior, may be dispensed with. In the event of such contract being made with an irrigation district, the Secretary of the Interior, in his discretion, may contract that the payments, both for the construction of irrigation works and for operation and maintenance, on the part of the district shall be made upon such dates as will best conform to the district and taxation laws of the respective States under which such irrigation districts shall be formed, and if he deem it advisable he may contract for such penalties or interest charges in case of delinquency in payments as he may deem proper and consistent with such State laws, notwithstanding the provisions of sections 471, 472, 475, 478 to 481, 492, 493, 494 to 497 and 499 of this title. The Secretary of the Interior may accept a partial payment of the amount due from any district to the U

Patents and water-right certificates which shall be issued after May 15, 1922, under the terms of subchapter XIV of this chapter, for lands lying within any irrigation district with which the United States shall have contracted, by which the irrigation district agrees to make the payment of all charges for the building of irrigation works and for operation and maintenance, shall not reserve to the United States a lien for the payment of such charges; and where such a lien shall have been reserved in any patent or water-right certificate issued under said subchapter, the Secretary of the Interior is empowered to release such lien in such manner and form as may be deemed effective; and the Secretary of the Interior is further empowered to release liens in favor of the United States contained in water-right applications and to assent to the release of liens to secure reimbursement of moneys due to the United States pursuant to water-right applications running in favor of the water users’ association and contained in stock subscription contracts to such associations, when the lands covered by such liens shall be subject to assessment and levy for the collection of all moneys due and to become due to the United States by irrigation districts formed pursuant to State law and with which the United States shall have entered into contract therefor: Provided, That no such lien so reserved to the United States in any patent or water-right certificate shall be released until the owner of the land covered by the lien shall consent in writing to the assessment, levy, and collection by such irrigation district of taxes against said land for the payment to the United States of the contract obligation: Provided further, That before any lien is released under this section the Secretary of the Interior shall file a written report finding that the contracting irrigation district is legally organized under the laws of the State in which its lands are located, with full power to enter into the contract and to collect by assessment and levy against the lands of the district the amount of the contract obligation.

Upon the execution of any contract between the United States and any irrigation district pursuant to sections 511 and 512 of this title the public lands included within such irrigation district, when subject to entry, and entered lands within such irrigation district, for which no final certificates shall have been issued and which may be designated by the Secretary of the Interior in said contract, shall be subject to all the provisions of chapter 13 of this title: Provided, That no map or plan as required by section 623 of this title need be filed by the irrigation district for approval by the Secretary of the Interior.