2011 ORS § 261.635¹
Procedure exclusive
No contest of any proceeding, matter or thing by this chapter provided to be had or done by the board of directors, by the district, by the county governing body or by any elector of the district, shall be had or maintained at any time or in any manner except as provided in ORS 261.605 (Testing validity of certain commission and board proceedings) to 261.630 (Institution of proceeding by elector). [Amended by 1979 c.558 §28; 1983 c.85 §36]
