National Weather Service Advanced Hydrologic Prediction Service

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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit https://www.weather.gov/owp/operations for more information.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.


DID YOU KNOW... Please try our new TEST hydrograph page link at: https://preview.water.noaa.gov/gauges/abcde - Just replace “abcde” with your local hydrograph five character ID found in the lower left corner of the hydrograph. In late March of 2024, the base URL path will become water.noaa.gov. Feedback can be provided HERE

Weather Forecast Office St. Louis, MO

North Central River Forecast Center

Hydrograph

River at a Glance

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About this graph

Tabular Data (UTC)

Tabular Data (CST)

Datum: Not Available

Metadata

NOTE: 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.

NOTE: For the latest navigation status update from the U.S. Army Corps of Engineers-St. Louis District, click here.

NOTE: Forecasts for the Mississippi River at Louisiana are issued routinely year-round.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet)

Major Flood Stage:	25
Moderate Flood Stage:	20
Flood Stage:	15
Action Stage:	13
Low Stage (in feet):	-9999

Historic Crests
(1) 28.40 ft on 07/28/1993
(2) 27.72 ft on 06/02/2019
(3) 27.05 ft on 04/24/1973
(4) 26.96 ft on 06/23/2008
(5) 24.99 ft on 04/22/2013
(6) 24.43 ft on 05/16/2001
(7) 24.33 ft on 07/08/2014
(8) 22.79 ft on 10/13/2018
(9) 22.70 ft on 04/05/1983
(10) 22.70 ft on 10/05/1986
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 19.98 ft on 05/06/2023
(2) 17.49 ft on 04/13/2021
(3) 16.98 ft on 03/19/2021
(4) 16.92 ft on 07/02/2020
(5) 17.31 ft on 06/11/2020
(6) 15.18 ft on 05/18/2020
(7) 18.91 ft on 04/03/2020
(8) 19.07 ft on 10/18/2019
(9) 27.72 ft on 06/02/2019
(10) 15.05 ft on 11/12/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -3.20 ft on 12/07/1897
(2) -3.20 ft on 12/28/1933
(3) -0.20 ft on 10/21/1932
(4) 0.10 ft on 07/27/1911
(5) 0.80 ft on 10/20/1918
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.

Show FEMA's National Flood Hazard Layers

Zoom Level:14

	Gauge Location	Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

If you notice any errors in the below information, please contact our Webmaster
33.1	Near this height, water will begin to flood U.S. Highway 54 on the Illinois side between the Champ Clark bridge and the levee.
29.5	The boat house floods.
28.6	The floodwall at the sewage treatment plant is overtopped, forcing the plant shutdown.
28.4	This is the RECORD FLOOD LEVEL that was reached on July 28 1993.
28.3	This represents the height of the railroad tracks along Water Street.
28	Water reaches low steel on railroad bridge in Louisiana.
27	The Sny Island Cell #2 Levee is overtopped. This flood level was reached on April 24 1973.
26	Floodgates and sandbags are used to protect the city water treatment intake.
25.9	Near this height the main floor of the Two Rivers Marina off U.S. Highway 54 begins flooding.
25.5	The south end of Main Street in Louisiana begins flooding.
25.25	Missouri Highway 79 from County Road 115 to County Road 117 is closed northwest of Louisiana.
23.5	Sny Levee District starts mobilizing to close levee.
23	Numerous houses and businesses in southeast Louisiana begin to flood.
22.8	Highway 79 is closed at Route D south of Louisiana near the Dyno-Nobel plant and Calumet plant.
21.7	Floodgates are installed at the city sewage treatment facility.
21.5	Water encroaches both shoulders of State Highway 79 about one half mile south of Louisiana at the Junction of County Road D. Also at this level low sections highway 79 in Louisiana are flooded. Motorists are detoured onto side streets. A business at the SW corner of Highway 79 and Alabama begins flooding.
21.3	Highway 79 near Alabama Street at Gladney's car lot is closed.
21	Highway 79 begins flooding near 3rd Street on the south side of Louisiana.
20.8	Near this height, the railroad bridge below the mouth of Noix Creek is closed. Above this height, the bridge is unable to open to vessel traffic.
20.2	Illinois Street between Main and Highway 79 begin flooding.
19.8	Entrance to Noix Creek Campground begins flooding.
19.6	Maryland Steet at 4th Street by the Town Branch bridge begins flooding near this height.
17	The parking area at the boat house floods.
15	The first quarter mile of Edison Avenue beyond the railroad tracks begins flooding near this height.
12.2	For barge navigation, the Corps will attempt to keep the river at or below this level. Year-round target levels are between 11.5 and 12.2 feet.
11.5	For safe navigation of barge traffic, the Corps will try to keep the river above this level. Year-round target levels are between 11.5 and 12.2 feet.
Photos (1) Louisiana riverfront flooded on June 19, 2008 at 26.0 ft. (2) Highway 54 flooded just east of Mississippi River bridge on June 19, 2008 at 25.95 feet. (3) Flooded businesses along South Main Street south of Delaware Street on June 19, 2008 at 25.95 feet. (4) South 3rd Street (Highway 79) looking south from N. Carolina Street on June 19, 2008 at 25.9 ft. (5) Alabama Street between Main St. and South 3rd Street on June 19, 2008 at 25.9 feet. (6) Looking down Highway 79 at Alabama Street on May 17, 2001 at 24.1 feet. (7) 4th St. at Maryland looking south on June 25, 2010 at 20.74 feet. (8) Illinois Street from Main Street looking west on June 25, 2010 at 20.73 feet. (9) Hwy 79 (3rd St.) looking south toward Alabama Street on June 25, 2010 at 20.73 feet. (10) Delaware Street looking west from Hwy 79 (3rd St.) on June 25, 2010 at 20.73 feet. (11) Louisiana riverfront park on May 17, 2001 at 24.1 feet. (12) Riverfront parking near the boathouse restaurant on April 14, 2007 at 16.75 ft. (13) Gaging shelter at Louisiana, MO at a stage of 16.75 feet.

About This Location

Latitude: 39.452500° N, Longitude: 91.046667° W, Horizontal Datum: NAD83/WGS84

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS stage	0 ft	15 ft	Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum	Elevation (gauge height = 0)	Elevation (gauge height = flood stage)	Elevation information source
NAVD88	437.03 ft	452.03 ft	Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29	437.33 ft	452.33 ft	Older USGS topographic maps, NGVD29 benchmarks
MSL	Not Available	Not Available	Older USGS topographic maps, MSL benchmarks
Other	Not Available	Not Available

Additional Information

How low could the river get?

Resources

Hydrologic Resources

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Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

NWS Information

National Weather Service
St. Louis Weather Forecast Office
12 Missouri Research Park Drive
St. Charles, MO 63304
(636) 441-8467
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Page last modified: 2-Nov-2020 7:29 PM

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