43 U.S. Code § 480 - Cancellation of water right or entry for nonpayment of construction charge
If any water-right applicant or entryman shall be one year in default in the payment of any installment of the construction charges and penalties, or any part thereof, his water-right application, and if he be a homestead entryman his entry also, shall be subject to cancellation, and all payments made by him forfeited to the reclamation fund, but no homestead entry shall be subject to contest because of such default.
Source(Aug. 13, 1914, ch. 247, § 3,38 Stat. 687.)