Oregon Revised Statutes Water Resources: Irrigation, Drainage, Flood Control, Reclamation § 543.290

(1) All maps, plans, specifications and cost estimates as may be required by the commission for a full understanding of the proposed project. The maps, plans and specifications, when approved by the commission, shall become a part of the license, if one is issued upon the application, and thereafter no change shall be made in any such maps, plans and specifications until the proposed change has been approved by the commission. When a proposed change is approved by the commission, the changes shall become a part of the license.

(2) Any further statements and data as may be required by the commission concerning the proposed project, the market to be served, the financial responsibility of the applicant, the plan of financing and any other matters deemed material by the commission.