At the hearing provided in section 61-05-10, the department of water resources may amend the plan of irrigation proposed in the petition provided in section 61-05-07. The department may adjourn the hearing from time to time and may make changes in the proposed boundaries of the district as the department deems advantageous and advisable, but the boundaries of the district proposed in the petition for its organization may not be enlarged or extended until the electors who own a majority of the acres [hectares] of land subject to assessments for construction or other costs to be included in the extension consented to the enlargement or extension in writing.
N.D.C.C. § 61-05-11