| Flood Impacts |
| 26.0 | County Highway K30 north of Rock Valley is flooded. |
| 22.0 | The driveway and yard of the house near the gage are flooded. |
| 20.0 | Major agricultural flooding begins throughout the flood plain. |
| 19.0 | Rock Valley begins to experience flood problems and sandbagging of storm sewers in the city begins. |
| 16.0 | Significant amounts of agricultural lands are flooded...and some rural roads are also threatened by high water. |
| 13.0 | The lowest lying pasture and farm land will experience some minor flooding. |
