Oregon Revised Statutes Commercial Fishing and Fisheries § 509.610

(1) Subject to ORS 509.645, when the State Department of Fish and Wildlife requires fish passage to be provided pursuant to ORS 509.585, the person owning or operating an artificial obstruction shall keep the fish passage in such repair as to provide adequate fish passage of native migratory fish at all times.

(2) Each day of neglect or refusal to comply with subsection (1) of this section, after notification in writing by the department, constitutes a separate offense.

(3) A person owning or operating an artificial obstruction is responsible for maintaining, monitoring and evaluating the effectiveness of fish passage or alternatives to fish passage.