S.D. Codified Laws § 46A-5-13
After adopting a plan of canals, storage reservoirs, and works, the board of directors shall publish notice of the plan, not less than twenty days after it is adopted, in one newspaper published in each of the counties in which the district is situated, if a newspaper is published in the counties, and in such other newspapers as the board deems advisable, calling for bids for the construction of the work or any portion of the work. If less than the whole work is advertised, the portion so advertised shall be particularly described in the notice. The notice shall set forth that plans and specifications can be seen at the office of the board, and that the board will receive sealed proposals for the work, and that the contract will be let to the lowest responsible bidder. The notice shall state the time and place for opening the proposals, which at the time and place shall be opened in public. As soon as convenient after the bids are opened, the board shall let such work, either in part or as a whole, to the lowest responsible bidder. Alternatively, the board may reject any bid and readvertise for proposals, or may proceed to construct the work under its own superintendence.
SDCL 46A-5-13