Mississippi River at Quincy

1. 35.00 ftThe Flood wall protecting the Quincy Water Plant is overtopped. The South Quincy Drainage District levee is overtopped near this height, flooding 5500 acres on the Illinois side 1 to 9 miles downstream of Quincy.
2. 34.00 ftNear this height, the South Quincy Drainage District levee overtops.
3. 31.00 ftThe Comstock Stove Castle Company warehouse begins flooding near this height.
4. 30.80 ftNear this height, all roads leading to Bottom Road north of Quincy are closed to all traffic.
5. 29.70 ftIndian Grave Levee north of Quincy is overtopped.
6. 29.60 ftThe Fabius River Drainage District levee is overtopped near this height, flooding 14000 acres on the Missouri side from 5 miles upstream of Quincy and 4 miles downstream of Quincy.
7. 29.50 ftThe main floor of the South Side Boat Club floods near this height. Also, the Union Township Drainage District levee is overtopped, flooding 5000 acres on the Missouri side about 4 to 8 miles upstream of Quincy.
8. 29.00 ftR.J. Peters Drive in south Quincy is closed between 8th Street and Gardner Expressway, or Illinois Route 57.
9. 28.80 ftFlood water reaches the low steel on the BNSF bridge in Quincy.
10. 28.20 ftDamage begins at Quincy sewage treatment plant.
11. 28.00 ftThe city of Quincy begins sandbagging. Also, the land around the log cabins at Log Cabin Village on Quinsippi Island begins flooding.
12. 26.30 ftEastbound lanes of the US Highway 24 bridge (Memorial Bridge) are closed. Eastbound traffic is diverted to the northern US Highway 24 bridge, or onto the Bayview Bridge.
13. 26.00 ftAt this height, Quinsippi Island roads flood by the park shelters and Lenane Park begins flooding.
14. 24.00 ftIn Quincy, Bonansinga Drive is closed at Cedar Street and at Koch's Lane. Illinois Highway 57 is closed between Jefferson Street and the Gardner Denver company. The Art Keller Marina docks are cabled off and closed.
15. 23.50 ftCounty Highway 7 in Quincy south of Parker Heights Park is flooded.
16. 22.10 ftBonansinga Drive at Bob Bangert Park begins to flood. Also, the basement of the South Side Boat Club begins flooding near this height.
17. 22.00 ftThe Clat Adams Bicentennial Park, just north of the Memorial Bridge, begins flooding. Also at this height, most roads in Kesler Park are flooded.
18. 21.90 ftThe lower floor of the Quincy Boat House begins flooding near this height.
19. 21.10 ftThe roundabout at the north entrance to the Clat Adams Bicentennial Park begins flooding at this height.
20. 20.00 ftAll America and Bob Bangert parks begin to flood. Also, the Art Keller Marina walkways and the south boat ramp at Kesler Park begin flooding.
21. 19.50 ftGarages beneath raised homes along Bonansinga Drive will begin flooding near this height.
22. 18.50 ftBNSF Railroad main line, 10 to 16 miles above Quincy begins to flood at several locations.
23. 15.00 ftRiverside campsites south of Quincy begin to flood.

Chance of flooding, September to November

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Most recent crests

• May 5, 2023: 21.18 ft
• April 2, 2020: 19.58 ft
• October 17, 2019: 20.05 ft
• October 1, 2019: 18.03 ft
• July 9, 2019: 17.33 ft
• May 3, 2019: 31.16 ft
• October 12, 2018: 24.81 ft
• September 9, 2018: 20.31 ft
• July 5, 2018: 19.15 ft
• May 15, 2018: 19.61 ft

• UpstreamMississippi River at LaGrange
• DownstreamMississippi River at Quincy Lock and Dam 21
• South Fabius River at Taylor
• North River (MO) at Palmyra
• North Fabius River at Ewing
• Mississippi River at Hannibal
• Mississippi River at Canton Lock and Dam 20
• Middle Fabius River at Ewing

Forecasts by the North Central River Forecast Center. Forecasts are issued routinely year-round. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time. For the latest navigation status update from the U.S. Army Corps of Engineers-St. Louis District, <a href="http://www.mvs.usace.army.mil/Missions/Navigation/Status-Reports/">click here.</a>

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service.