Oregon Revised Statutes Water Resources: Irrigation, Drainage, Flood Control, Reclamation § 545.351

In order to make the lands available for development by the federal government or any federal agency, as provided in ORS 545.349, any irrigation district may accept from any landowner within the district title to any part of the land of the landowner and allow the landowner credit to the extent of the reasonable value of that land on the reclamation charge against the remainder of the land of the landowner. However, credit shall not be allowed so as to entirely extinguish the reclamation charge against any land in the district, and land shall not be accepted by the district or credit allowed until a contract has been executed by the district and the federal government or some federal agency for development of the lands.