S.D. Codified Laws § 46A-4-65
The owner in fee of any tract of land, entrymen of unpatented lands, and the secretary of the interior for unentered public lands, which constitute a portion of an irrigation district, may file with the board of directors of the district a petition praying that such tracts and any other contiguous tracts be excluded and taken from the district. The petition shall describe the boundaries of the land which the petitioners desire to have excluded from the district and also the lands of each of the petitioners that are included within the boundaries. The description of the lands need not be more particular nor certain than is required when the lands are entered in the assessment book by the county director of equalization; and the petition shall be acknowledged in the same manner and form as required in case of a conveyance of land.
SDCL 46A-4-65