Oregon Revised Statutes Water Resources: Irrigation, Drainage, Flood Control, Reclamation § 541.875

(1) No person shall construct, operate or maintain, and no officer or agency of this state shall issue any permit for the construction, operation or maintenance of, any dam or hydroelectric facility on:

(2) Nothing in this section applies to the repair, structural repair, maintenance or improvement of any dam constructed on the North Umpqua River prior to November 1, 1981, with the approval of the Water Resources Commission and the State Department of Fish and Wildlife. The commission and the State Department of Fish and Wildlife shall not unreasonably withhold or delay such approval, but may withhold approval for reasonable cause, including but not limited to a substantiated finding that the repairs, structural repairs, maintenance or improvements:

(3) No person shall appropriate and no officer or agency of this state shall issue or approve any license, permit or certificate for the use of water for hydroelectric generation at a dam at the location referred to in subsection (1) of this section.