Mississippi River at Dubuque (Railroad Bridge)
Iowa — Water Level & Flood Stage
Located in Dubuque County, Iowa 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: DBQI4). Live data may be limited. View on NWS AHPS →
Flood Stages
Major Flood
21.5 ft
Moderate Flood
18 ft
Minor Flood
17 ft
Action Stage
15 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
34.6 ft
Water reaches the top of the flood wall at Kerper in Dubuque.
32 ft
Water overtops the Dubuque flood wall and levee at their lowest points.
31.6 ft
Water reaches the bottom of the 16th Street bridge.
28.8 ft
Water reaches the bottom of the 4th Street bridge.
28.5 ft
Water overtops the East Dubuque levee.
26.5 ft
Water affects service buildings at Dubuque Casino. Water also reaches the top of the East Dubuque levee flood gates.
26 ft
Water affects Miller Riverview Park parking lot in Dubuque.
25.5 ft
Water affects the lowest sections of Dubuque Casio parking lot.
25 ft
Water affects Admiral Sheehy Drive at Greyhound Park Road in Dubuque. Water also affects the Burlington Northern railroad tracks near Lock and Dam 11. Water also floods ballparks on City Island.
24 ft
Water affects Dubuque Marina facilities and buildings. Water also affects Hawthorne Peninsula Park in Dubuque.
22.6 ft
Water affects the Midtown Marina facilities and parking lot in East Dubuque.
21.5 ft
Water affects several homes in the Frentress Lake area.
20.5 ft
Water affects the Illinois Central railroad tracks in Dubuque.
20 ft
Water reaches the base of the flood wall at the Ice Harbor. Most of the houses on the river side of the East Dubuque levee are in water.
18 ft
Water reaches the bottom of the East Dubuque Flats levee.
17.5 ft
Water affects Basten Road in East Dubuque.
17 ft
Water affects homes in Shore Acres in East Dubuque.
15 ft
Water affects yards in East Dubuques Shore Acres subdivision.
14 ft
Water inundates the lower end of City Island. Water is at the edge of the Shore Acres subdivision and the Bent Prop Marina area in East Dubuque.
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 |
|---|---|---|
| Apr 25, 1965 | 26.81 ft | — |
| Apr 25, 1965 | 26.81 ft | — |
| Apr 20, 2001 | 25.4 ft | — |
| Apr 20, 2001 | 25.4 ft | — |
| Apr 28, 2023 | 24.3 ft | — |
About This Gauge
NWS LID
DBQI4
River
Mississippi River
County
Dubuque, IA
Coordinates
42.4994°N, 90.6531°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 Dubuque (Railroad Bridge)?
The Mississippi River at Dubuque (Railroad Bridge) 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 Dubuque (Railroad Bridge)?
The NWS-defined flood stage for Mississippi River at Dubuque (Railroad Bridge) is 17 feet. Action stage begins at 15 feet. Moderate flooding starts at 18 feet, and major flooding at 21.5 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 Dubuque (Railroad Bridge) 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 Dubuque (Railroad Bridge) gauge located?
The gauge is located in Dubuque County, Iowa at coordinates 42.4994°N, 90.6531°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: U.S. Army Corps of Engineers, Observations courtesy of U.S. Army Corps of Engineers
- 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.