Okla. Stat. tit. 82, § 82-277.26: Transfer and substitution of land unsuitable for

irrigation.

A landowner who owns assessed irrigable land which is no longer

useful or suitable for irrigation may transfer and substitute such

land for other land owned by such landowner within the district or

to land outside of but adjacent to the district when such transfer

is approved by the board of directors of the district. The

unsuitable land from which the transfer is made shall become

nonirrigable land and the land to which the transfer is made shall

become irrigable land.