N.D. Cent. Code § 40-22-08
For the purpose of making an improvement project of one of the types specified in section 40-22-01 and defraying the cost thereof by special assessments, a municipality may create water districts, sewer districts, water and sewer districts, street improvement districts, boulevard improvement districts, flood protection districts, and parking districts, and may extend any such district when necessary. The appropriate special improvement district may be created by ordinance or resolution. The district shall be designated by a name appropriate to the type of improvement for the making of which it is created, and by a number distinguishing it from other improvement districts. Nothing herein, however, shall prevent a municipality from making and financing any improvement and levying special assessments therefor under any alternate procedure set forth in this title.
N.D.C.C. § 40-22-08