ORS § 548.510
If any such levy of assessment is declared void by a court of competent jurisdiction, then all similar assessments levied in the same or other years by the drainage or irrigation district which under the decision of the court are also void, may be reassessed, relisted and relevied against the property affected, in the manner provided by law and in conformity with such judgment, within five years from the date of the rendition of the judgment of the court declaring such assessment void. In the case of a relisting or relevying of such drainage or irrigation district assessment on any property affected thereby, proper credit in the collection of the same shall be given to all owners of any such property for all payments theretofore made by them on the void assessments.
ORS 548.510