| 1. |  | Flood damages, June 9-10 1972. Omaha exit to West Boulevard. High water has washed soil out from under the sidewalk exposing the guard rail posts and sodging debris in the guard rail. | Floods -- Black Hills (S.D. and Wyo.) Floods -- South Dakota -- Rapid City (S.D.) | Flood damages, June 9-10 1972. Omaha exit to West Boulevard. High water has washed soil out from under the sidewalk exposing the guard rail posts and sodging debris in the guard rail. |