Okla. Stat. tit. 82, § 82-548: Amendment of district boundaries to include other

necessary lands - Validation.

Any time subsequent to the entry of the decree creating the

district, and prior to the filing of the report of the board of

appraisers, land situated outside of the district boundaries,

necessary to accomplish the purposes of the district, may be

included within the boundaries of said district. Said lands may be

included within the boundaries of said district, by the filing, with

the court having jurisdiction of said district, a petition, signed

by owners of at least fifty-one percent (51%) of the land area and

by not less than fifty-one percent (51%) of the landowners in the

area proposed to be added to the said district. Proceedings of said

petition shall conform to the proceedings to create a district as

provided in this title. Upon said hearing, if the court finds that

said land is reasonably necessary to be included within said

district to accomplish the purposes for which said district was

originally created, the court shall amend the boundaries of the

district to include said land.

Any amendments to the boundaries of a district heretofore made

by a court having jurisdiction thereof according to the procedure

herein provided are hereby validated.