Oregon Revised Statutes Water Resources: Irrigation, Drainage, Flood Control, Reclamation § 545.033

(1) The order of the county court shall designate the name of the district. The name of the district may be changed by the county court at any time thereafter upon petition of the board of directors of the district accompanied by either the consent, in writing, of a majority of the owners of lands within the district or by the certificate of the secretary of the district certifying that, at a regular or special election called and held in the district for any purpose provided by law, the proposed change of name was approved by a majority of the electors voting upon the question of change of name. The secretary of the district shall cause a certified copy of the order to be recorded in the office of the county clerk of the county or counties in which the district is located.

(2) If the petition provides for a five-member board of directors or provides for a three-member board of directors for a subdivided district, the county court shall divide the district into the required number of divisions. Each division shall be as nearly equal as practicable in the number of acres that will be subject to the charges or assessments of the district. The county court shall define and particularly describe division boundaries and make use, insofar as may be desirable, of any natural boundaries that may exist in the district. The divisions shall be numbered.