ORS § 93.600
Unless otherwise prescribed by law, real property shall be described for recordation by giving the subdivision according to the United States survey when coincident with the boundaries thereof, or by lots, blocks and addition names, or by partition plat recording and parcel numbers, or by giving the boundaries thereof by metes and bounds, or by reference to the book and page, document number or fee number of any public record of the county where the description may be found or in such other manner as to cause the description to be capable of being made certain. However, description by tax lot number shall not be adequate. Initial letters, abbreviations, figures, fractions and exponents, to designate the township, range, section or part of a section, or the number of any lot or block or part thereof, or any distance, course, bearing or direction, may be employed in any such description of real property.
ORS 93.600