Mississippi River at Quincy
Illinois — Water Level & Flood Stage
Located in Adams County, Illinois on the Mississippi River. Live water level data from USGS, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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This is an NWS forecast point (LID: UINI2). Live data may be limited. View on NWS AHPS →
Flood Stages
Major Flood
26 ft
Moderate Flood
22 ft
Minor Flood
19 ft
Action Stage
17 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
35 ft
The 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.
34 ft
Near this height, the South Quincy Drainage District levee overtops.
31 ft
The Comstock Stove Castle Company warehouse begins flooding near this height.
30.8 ft
Near this height, all roads leading to Bottom Road north of Quincy are closed to all traffic.
29.7 ft
Indian Grave Levee north of Quincy is overtopped.
29.6 ft
The 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.
29.5 ft
The 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.
29 ft
R.J. Peters Drive in south Quincy is closed between 8th Street and Gardner Expressway, or Illinois Route 57.
28.8 ft
Flood water reaches the low steel on the BNSF bridge in Quincy.
28.2 ft
Damage begins at Quincy sewage treatment plant.
28 ft
The city of Quincy begins sandbagging. Also, the land around the log cabins at Log Cabin Village on Quinsippi Island begins flooding.
26.3 ft
Eastbound 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.
26 ft
At this height, Quinsippi Island roads flood by the park shelters and Lenane Park begins flooding.
24 ft
In 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.
23.5 ft
County Highway 7 in Quincy south of Parker Heights Park is flooded.
22.1 ft
Bonansinga Drive at Bob Bangert Park begins to flood. Also, the basement of the South Side Boat Club begins flooding near this height.
22 ft
The Clat Adams Bicentennial Park, just north of the Memorial Bridge, begins flooding. Also at this height, most roads in Kesler Park are flooded.
21.9 ft
The lower floor of the Quincy Boat House begins flooding near this height.
21.1 ft
The roundabout at the north entrance to the Clat Adams Bicentennial Park begins flooding at this height.
20 ft
All America and Bob Bangert parks begin to flood. Also, the Art Keller Marina walkways and the south boat ramp at Kesler Park begin flooding.
19.5 ft
Garages beneath raised homes along Bonansinga Drive will begin flooding near this height.
18.5 ft
BNSF Railroad main line, 10 to 16 miles above Quincy begins to flood at several locations.
15 ft
Riverside campsites south of Quincy begin to flood.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jul 12, 1993 | 32.13 ft | — |
| Jul 12, 1993 | 32.13 ft | — |
| May 3, 2019 | 31.16 ft | 506,400 cfs |
| May 3, 2019 | 31.16 ft | 506,400 cfs |
| Jun 18, 2008 | 30.8 ft | 494,000 cfs |
About This Gauge
NWS LID
UINI2
River
Mississippi River
County
Adams, IL
Coordinates
39.9322°N, 91.4161°W
Get Flood Alerts for Mississippi River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Mississippi River at Quincy?
The Mississippi River at Quincy gauge is maintained by USGS and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Mississippi River at Quincy?
The NWS-defined flood stage for Mississippi River at Quincy is 19 feet. Action stage begins at 17 feet. Moderate flooding starts at 22 feet, and major flooding at 26 feet.
How do I get alerts when Mississippi River rises?
Download StormCast free on Google Play, go to River Gauges, and add Mississippi River at Quincy to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Mississippi River at Quincy gauge located?
The gauge is located in Adams County, Illinois at coordinates 39.9322°N, 91.4161°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: US Army Corps of Engineers
- 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>