Oregon Revised Statutes Water Resources: Irrigation, Drainage, Flood Control, Reclamation § 542.050

As the purposes of ORS 542.010 to 542.050 are to secure the most immediate, as well as the most beneficial, ultimate use of the available waters for any certain project, the Water Resources Commission, as occasion may require, may grant permits and arrange the details so that minor portions of the project may be segregated and constructed at any time. However, the segregation and development of such minor parts shall not interfere to any serious extent with the handling or completion of the balance of the project.