Or. Rev. Stat. § 540.670 – Effect of cancellation of primary water right on supplemental right; change from supplemental to primary right; priority date

(1) The cancellation of a primary water right for nonuse under ORS 540.641 shall not also cancel a supplemental water right unless the supplemental water right also has not been used beneficially for five or more years.
(2) If the Water Resources Commission cancels a primary water right under ORS 540.641 the commission may issue a new water right certificate changing the supplemental water right to a primary right if the commission finds that the change would not result in injury to existing water rights.
(3) A supplemental right changed to a primary right under subsection (2) of this section shall retain the priority date of the supplemental right.

[1987 c.339 §2]