ORS § 543.440
No voluntary transfer of any license or any rights under a license or of any property acquired, constructed or operated pursuant to license issued under ORS 543.010 to 543.610 shall be made without written approval of the Water Resources Commission. Any successor or assignee of any licensee under any project acquired, constructed or operated by licensee, whether by voluntary transfer approved by the commission or sale upon foreclosure, execution or otherwise, shall be subject to all the terms and conditions of the license and of the provisions of ORS 543.010 to 543.610 to the same extent as though the successor or assignee was the original licensee thereunder. Any mortgage, deed of trust, or other lien suffered or created upon any such project shall be subject and subordinate to all the terms and conditions of ORS 543.010 to 543.610. However, the provisions of this section shall not apply to any transfer, voluntary or involuntary, to the state or any municipal corporation thereof, and upon such transfer the license shall terminate.
ORS 543.440