N.D. Cent. Code § 61-06-01
If an irrigation district contains less than twenty thousand irrigable acres [8093.72 irrigable hectares] of land and is not divided into precincts or divisions, the board of directors consists of five directors who must be residents of the state and electors of the district and must be elected at large. Two directors elected at the election for the organization of the district serve until the first Tuesday in April following the first regular district election, and three serve until the first Tuesday in April following the second regular election.
If an irrigation district contains twenty thousand irrigable acres [8093.72 irrigable hectares] or more, it must be divided into five or seven divisions or precincts, as the case may be, and one director must be elected from and by the electors of each division or precinct.
If an irrigation district contains twenty thousand irrigable acres [8093.72 irrigable hectares] or more and is divided into five divisions or precincts, the board of directors of the irrigation district consists of five directors. Two directors elected at the election for the organization of the district serve until the first Tuesday in April following the first regular district election, and three directors serve until the first Tuesday in April following the second regular district election.
If an irrigation district contains twenty thousand irrigable acres [8093.72 irrigable hectares] or more and is divided into seven divisions or precincts, the board of directors of the irrigation district consists of seven directors. Three directors elected at the election for the organization of the district serve until the first Tuesday in April following the first regular district election, and four directors serve until the first Tuesday in April following the second regular district election.
The terms of office of the directors elected at the first election for the organization of the district must be determined by lot at their first meeting. Directors elected at subsequent elections serve for four years and until their successors are duly elected and qualified. In case the office of any director becomes vacant, the remaining members of the board shall fill the vacancy by appointment. A director appointed to fill a vacancy serves the unexpired term of the director whose office that director has been appointed to fill. If vacancies occur in the offices of a majority of the directors of an irrigation district, the remaining members and the director of the department of water resources shall fill the vacancies; and if the offices of all the directors become vacant, the director of the department of water resources shall appoint the members of the board who shall serve until the next regular election of the district. The successors of the appointed directors must be elected to serve the unexpired term of the directors whose offices became vacant. The unexpired term of office that each director elected in this manner fills must be determined by lot.
N.D.C.C. § 61-06-01