N.D. Cent. Code § 61-05-21
Nothing contained in this chapter shall be construed as impairing, invalidating, or in any manner affecting the validity of acts or proceedings of irrigation districts organized pursuant to the provisions of chapter 38 of the Code of Civil Procedure of the Supplement to the Compiled Laws of 1913 and prior to March 16, 1939. The organization of any irrigation district prior to March 16, 1939, in substantial compliance with the provisions of this chapter, hereby is declared to be a valid and legal district, and all acts and proceedings of such district, and of the board of directors thereof, done and performed in substantial compliance with the provisions of this title hereby are validated and hereby are declared legal and valid.
N.D.C.C. § 61-05-21