43 U.S.C. § 390dd - U.S. Code - Unannotated Title 43. Public Lands § 390dd. Limitation on ownership

(1) a qualified recipient for use in the irrigation of lands owned by such qualified recipient in excess of nine hundred and sixty acres of class I lands or the equivalent thereof; or

(2) a limited recipient for the use in the irrigation of lands owned by such limited recipient in excess of six hundred and forty acres of class I lands or the equivalent thereof;