| 54.0 |
The Metro East St Louis and Fish Lake levees which protect 71,000 acres are overtopped. |
| 52.0 |
St Louis floodwall is overtopped. |
| 49.6 |
This is the RECORD FLOOD LEVEL that was reached on August 1 1993. |
| 49.0 |
Hartford Public Water supply is threatened. The last of the St. Louis City floodgates is installed at the Missouri-Pacific railroad (panel gate). |
| 48.0 |
The Harrisonville and Prairie DuPont levees protect 37,360 acres. |
| 47.7 |
The Columbia levee protects 14,000 acres. |
| 47.0 |
The panel floodgate is installed at the CB&Q railraod. |
| 44.1 |
Chouteau Island Pump Station begins to flood. Power to the Chouteau Island Pump Station disconnected... The Harrisonville and Columbia Levees are overtopped... |
| 43.2 |
This flood level was reached on April 28 1973. |
| 43.0 |
At this level, 5 floodgates are installed: 3 floodgates at the Corps of Engineers Service Base, another at Zepp Street, and another at the railroad near Guthrie Street. |
| 42.0 |
Riverview Blvd becomes flooded. A panel floodgate is installed at Riverview Blvd. |
| 41.0 |
At this level, St. Louis City installs a double floodgate at Branch Street in north St. Louis. |
| 40.0 |
Major flooding begins. At this level the Choteau Island Levee, protecting 2400 acres, is overtopped. Also, Lemay Park just south of Lemay Ferry Road will begin flooding. |
| 39.0 |
The city of Kimmswick, MO begins flooding. Two more St. Louis floodgates are closed at North Market Street (north St. Louis) and at Barton Street on the south side. |
| 38.5 |
Nellie Avenue, south of Lemay Ferry Road along River des Peres, begins flooding. |
| 38.0 |
Four more floodgates are closed at Prairie Avenue, Madison Avenue, Mullanphy Street, and the railroad bed near Lesparance Street. The U.S. Coast Guard will consider closing the St. Louis harbor to navigation above this level. |
| 37.0 |
Three more floodgates are closed at this level: the Missouri Illinois Sand Company gate in south St. Louis, the City of St. Louis railroad gate, and a double gate at East Grand in north St. Louis. |
| 35.0 |
Moderate flooding begins. The floodgates at Gratiot Road railroad and Choteau Street are closed. |
| 34.0 |
Floodgates at Convent Street railroad and Rutger Street are closed. |
| 33.0 |
Floodgates at the Rutger Street railroad and at Miller Street are closed. |
| 32.5 |
The President Casino closes at this level. |
| 32.0 |
Flood panels at Carr Street and Poplar Street are closed. |
| 31.0 |
Water begins entering the downtown parking garage. |
| 30.0 |
Floodwall at Lacledes Landing is closed. |
| 26.0 |
At 26 feet, several levees protects 2000 acres. |
| 18.5 |
Levee parking begins to be inundated. |
| 2.0 |
Barge traffic may need to reduce tonnage below this level. |
weather.gov 
