Oregon Revised Statutes Water Resources: Irrigation, Drainage, Flood Control, Reclamation § 543.055

(1) The Water Resources Commission may hold hearings and take testimony orally, by deposition or in such other form as the commission considers satisfactory, either within or without this state. The Water Resources Commission may require, by subpoena, the attendance of witnesses and the production of documentary evidence.

(2) An administrative law judge assigned from the Office of Administrative Hearings established under ORS 183.605, shall conduct any contested case hearing that the commission is required or permitted by law to hold. The administrative law judge has the same powers with respect to the conduct of the hearing as are granted by law to the commission, including the taking of testimony, the signing and issuance of subpoenas and the administering of oaths and affirmations to witnesses. The administrative law judge shall keep a record of the proceedings on the hearing and shall transmit such record to the commission.

(3) The commission may designate any person to take the testimony, affidavit or deposition of a witness. The person so designated may administer an oath or affirmation to any such witness and take the testimony thereof in accordance with such rules as the commission may prescribe.

(4) Witnesses appearing before the commission or any person designated by the commission to take testimony shall be paid the fees and mileage provided for witnesses in ORS 44.415 (2).