| Flood Impacts |
| 39.4 | The 500 yr flood level is exceeded |
| 38.3 | This level is met or exceeded an average of once every 200 years. |
| 38.2 | The Katy Trail east of Logan Creek floods |
| 37.1 | This level is met or exceeded an average of once every 100 years. |
| 37.0 | This is the RECORD FLOOD LEVEL that was reached on July 31 1993. |
| 35.9 | This level is met or exceeded an average of once every 50 years. |
| 35.8 | This is the flood level that was reached on October 6 1986. |
| 34.0 | Union Pacific Railroad tracks flood. |
| 33.7 | This flood level was reached on April 24 1973. |
| 33.5 | Highway 19 bridge begins to flood. |
| 33.0 | The IGA and Hermann Ford begins to flood. This level is equal to what was reached on July 19 1951. Major flooding begins. |
| 32.0 | 37,000 acres are flooded. |
| 30.0 | 36,154 acres are flooded. |
| 28.0 | 27,627 acres are flooded. |
| 26.0 | Moderate Flooding occurs. This is level is also the Critical stage to stop navigation traffic. 9400 acres on the north side of the river floods |
| 25.2 | The Bait shop just below the bridge floods. |
| 25.1 | Katy Trail near Portland Floods |
| 25.0 | City Lions Club Athletic Field begins to flood. |
| 24.0 | 420 acres of farmland are flooded. |
| 23.0 | 100 acres of farmland are flooded. |
| 21.0 | Flood Stage. Minor flooding begins. |
