The acts and resolutions of all boards of county commissioners heretofore authorizing the organization and operation of any diking and drainage districts, following any provisions of chapter 85.05 RCW, and the acts and resolutions of all diking and drainage districts heretofore organized following acts of congress permitting the taking over and operation and maintenance of existing diking and drainage systems by the state and local nonfederal governmental agencies, are ratified and confirmed.