| 1. |  | The railroad trestle over Elk Creek showing the pillings washed away at the west end of the span. Debris chokes the east end of the trestle. | Floods -- Black Hills (S.D. and Wyo.) Floods -- South Dakota -- Rapid City (S.D.) | The railroad trestle over Elk Creek showing the pillings washed away at the west end of the span. Debris chokes the east end of the trestle. |