ORS § 548.705
At any time subsequent to default in the payment of principal or interest upon the bonded or warrant indebtedness of any irrigation or drainage district of this state, the board of directors or board of supervisors may cause a petition to be filed in the Federal District Court pursuant to the provisions of the Federal Bankruptcy Act. The consent of the state is given to any proceedings instituted or attempted before February 16, 1939, by any such district under the Federal Bankruptcy Act. The state also authorizes and confirms any proceedings by any such district to effect a plan of composition or of readjustment of its debts in accordance with the provisions and terms of that Act, and authorizes the consummation of any such proceedings.
ORS 548.705