Okla. Stat. tit. 82, § 1611
Within one hundred eighty (180) days after the completion of construction of any flood control protective works, the floodplain board in the respective area of jurisdiction shall redefine the floodplain as altered by the works by amending the floodplain regulations pursuant to the procedures set forth in Section 1610 of this title.
Laws 1980, HB 1094, c. 179, § 11, emerg. eff. May 13, 1980; Amended by Laws 2002, HB 2228, c. 46, § 11, eff. November 1, 2002 (superseded document available); Amended by Laws 2011, HB 1692, c. 214, § 8 (superseded document available).