S.D. Codified Laws § 46A-10A-63
At a hearing, any interested person may appear in regard to statements in the petition, matters set forth in the engineer's report or the overall construction plan of the project. After a hearing, the board may establish the project as set forth in the engineer's report or may amend and establish the project in accordance with an amendment of the engineer's report. If the board deems it best to vary the route, materially change the initial or terminal points of the proposed project or increase the width of land to be taken for the proposed project, the board shall adjourn the hearing and give the owners of the land affected by the project change notice as in the original hearing. If the proposed project does not have sufficient fall to drain lands as intended or will not dispose of water properly, it shall be extended as necessary, the hearing shall be adjourned and notice shall be given as in the original hearing, to all owners of land affected by the extension.
SDCL 46A-10A-63