Oregon Revised Statutes Public Lands § 274.260

(1) The title of owners of land riparian to lakes and ponds drained under ORS 274.210 to 274.260 extends to only so much of the submersible or submerged lands adjoining or underlying such lake or pond which may be reclaimed by such drainage as is required to fill up the fractional subdivision or subdivisions of a section which the owner owns and which are rendered fractional by such lake or pond, and the title of such owner is so limited when the waters of such lake or pond receding, because of such drainage, uncover the submersible or submerged lands adjoining or underlying such lake or pond.

(2) This section shall not affect the right of riparian owners to land acquired by natural accretion or reliction because of the gradual and natural recession of the waters of the lake or pond to which the lands of such owners are riparian.