| Flood Impacts |
| 38.0 | The levees in and around Sioux City downstream of the gage begin to be overtopped. |
| 36.0 | Flooding begins to affect the town of James. |
| 34.5 | Approximately 3700 acres of farm land are flooded. |
| 34.0 | The northbound lane of Highway 75 is flooded...and the railroad company begins to shut down operations. |
| 31.5 | Flooding begins to affect the farm levees...and about 3200 acres of farm land are flooded. |
| 30.0 | County Highway C70 begins to flood. |
| 28.5 | Approximately 2100 acres of farm land are flooded. |
| 27.5 | Approximately 1500 acres of farm land are flooded. |
| 26.0 | Flooding begins to affect the low lying agricultural lands. |
| 23.0 | The lowest banks are overtopped with minor lowland flooding. |
