N.D. Cent. Code § 61-07-29
The board of any irrigation district in this state may enter into a contract for a supply of water with the United States, or with any department or agency thereof, or with the state water commission, or with any person, association, firm, corporation, or limited liability company, or with another irrigation district, for the irrigation of lands within the district. Under such contract, the board may agree to pay for the water furnished or delivered to the district from collections obtained from tolls or charges paid by water users and from assessments levied against the lands irrigated. The source of supply of such water may be either within or without the boundaries of this state. Such water supply may be the entire supply for such district or may supplement an appropriation of water already made by said district.
N.D.C.C. § 61-07-29