(2) ORS 274.430 to 274.450 shall not apply to any nonnavigable lakes lying within the boundaries of any duly organized and incorporated drainage district which was in existence on January 1, 1921.
(3) Nothing in this section impairs the title of any upland or riparian owner to or any vested rights in land which was added prior to May 25, 1921, by natural accretion or reliction to the lands of such upland owner. [Amended by 1967 c.421 §132]