ORS § 545.094
After the creation of a subdistrict, the board may develop an engineering plan for the improvements requested in the petition for the creation of the subdistrict or proposed by the board. The board may make an engineering plan for the subdistrict or may adopt as an engineering plan any plan made by any department or agency of the federal government or the State of Oregon or a project work plan proposed for any soil and water conservation district in which lands within the subdistrict are located. Upon completion of the plan, the board shall give notice of the plan to the owners of the tracts of land within the subdistrict and shall permit the inspection of the plan at the office of the subdistrict by the landowners. The notice may be given by mail or by publication, as may be determined by the board. The notice shall fix a time and place for a hearing at which objections to the plan may be heard by the board. The hearing shall be held not less than 20 nor more than 30 days after the date of mailing or the date of the last publication of the notice. At the hearing, the board may make changes in the engineering plan that the board considers necessary after reviewing objections or suggestions made by any person at the hearing. After the hearing, the board may approve the plan, as corrected or changed, by adopting an order of approval. However, if the owners of more than 50 percent of the lands within the subdistrict subject to the charges or assessments of the district file written objections to the order approving the engineering plan with the secretary of the district within 15 days after the date of the order, no further action shall be taken under the order and the plan shall be considered to have been rejected by the landowners. When an engineering plan for a subdistrict is rejected by the landowners, the board may obtain a new engineering plan and present it to the landowners in the manner provided in this section.
ORS 545.094
See note under 545.093.