In 2010, during the night of July 29-30, the Sioux Falls area saw unprecedented rainfall. Subsequent flooding damaged the property of Lincoln County landowners along the east side of South Dakota Highway 11. Five couples sued the state, saying that the highway blocked the flow of the Spring Creek Tributary because two 48-inch culverts were inadequate. At trial in the Second Circuit, the landowners prevailed, and the state appealed to the Supreme Court. Justices heard oral arguments in that case Tuesday, Jan. 12.