Or. Rev. Stat. § 545.295
(1) Notwithstanding any other provisions of this chapter, in any irrigation district that was formed before April 23, 1959, and that lies entirely west of the summit of the Cascade Mountains, the board of directors shall, as a condition precedent to the delivery of water and the charging and assessment of any lands within the district that have not been irrigated or charged or assessed, determine:
[Formerly 545.065]