Oregon Revised Statutes Water Resources: Irrigation, Drainage, Flood Control, Reclamation § 548.930

(1) Upon canvass of the votes, if it is found and declared by the district board that a majority of the qualified electors and landowners of the district, representing at least one-half of the acres of land assessed by the district, voted against the dissolution or reorganization of the district, the petition for dissolution or reorganization shall be denied and no further action shall be taken upon it. However, if it is found and declared that the majority voted for the dissolution or reorganization of the district, the district board shall, within 60 days after the date of the election, file in the circuit court of the county in which the registered office of the district is located, a petition requesting the court to examine and determine the regularity and legality and correctness of the proceedings and to determine and adjudicate the rights and liabilities of all interested parties in a manner which is equitable, reasonable and in the best interests of the parties. There shall be attached to and made a part of the district board petition a copy of the petition for dissolution or reorganization, as the case may be, of the electors and landowners as filed with the district secretary.

(2) If a petition for election is not filed as provided by this section within 30 days after the date of publication of notice as provided by ORS 548.920 (1) and (2), the district board shall file its petition in the circuit court within 90 days after the date notice is published.