Oregon Revised Statutes Public Lands § 274.925

(1) Whenever the United States, while engaged in the promotion of navigation, creates new lands upon submersible or submerged lands owned by the state and the adjoining or opposite upland or riparian land on the same side of the body of water is owned by a public body, the public body has the right to purchase the new lands as provided in this section. The public body shall pay to the Department of State Lands for the new lands a sum equal to the difference between the value of the tract, consisting of the new lands and the adjoining or opposite upland on the same side of the body of water, and the value of the adjoining or opposite upland before the creation of the new lands and an amount prescribed by the department to pay its administrative costs incurred with respect to the new lands. Such payment shall be made by the public body within one year after the date of the receipt by it of actual notice by the department of the creation of the new lands, the sum equal to the difference between the value of the tract, consisting of the new lands and the adjoining or opposite upland on the same side of the body of water, and the value of the adjoining or opposite upland before the creation of the new lands and the administrative costs incurred by the department with respect to new lands. If the public body fails to make payment for the new lands as provided in this subsection within one year after the date of such notice, the department may dispose of the new lands as provided in ORS 274.915.

(2) If a public body and the department cannot agree on the sum to be paid under subsection (1) of this section, the sum to be paid shall be determined by three appraisers, one appointed by the public body, one by the department, and the third by the first two, and their determination shall be final. The cost of the third appraiser shall be borne equally by the public body and the department.