| 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. |
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1) 36.97 ft on 07/31/1993
2) 36.22 ft on 05/19/1995
3) 35.79 ft on 10/06/1986
4) 35.50 ft on 06/01/1844
5) 33.66 ft on 04/24/1973
6) 33.00 ft on 07/19/1951
7) 32.40 ft on 05/18/1990
8) 31.70 ft on 09/29/1993
9) 30.20 ft on 03/26/1978
10) 29.53 ft on 05/14/2002
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5) 0.50 ft on 01/08/1977
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