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 March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

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.

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 (CDT)

Datum: NAVD88

Metadata

NOTE: Forecasts for the Kaskaskia River at Vandalia are issued as needed during times of high water, but are not routinely available.

Vertical Datum updated from NGVD29 to NAVD88 by gauge owner.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet)

Major Flood Stage:	26
Moderate Flood Stage:	24
Flood Stage:	18
Action Stage:	16
Low Stage (in feet):	-9999

Historic Crests
(1) 28.27 ft on 05/08/2002
(2) 27.88 ft on 04/19/2013
(3) 27.84 ft on 01/12/2020
(4) 27.83 ft on 12/28/2015
(5) 27.70 ft on 01/06/2005
(6) 27.65 ft on 05/01/2017
(7) 27.45 ft on 04/28/2011
(8) 27.41 ft on 04/30/1996
(9) 27.40 ft on 05/18/1995
(10) 27.39 ft on 06/29/1951
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 18.26 ft on 05/16/2023
(2) 23.93 ft on 03/26/2023
(3) 18.99 ft on 03/06/2023
(4) 20.70 ft on 08/07/2022
(5) 26.21 ft on 04/01/2022
(6) 22.87 ft on 03/09/2022
(7) 23.70 ft on 02/19/2022
(8) 18.49 ft on 12/31/2021
(9) 23.63 ft on 03/20/2021
(10) 19.31 ft on 03/03/2021
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.00 ft on 08/22/1911
(2) 0.50 ft on 05/01/1980
(3) 1.93 ft on 07/27/2012
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
33.29	Flood waters reach the instrument shelf of the manometer gage house.
31	Floodwaters will threaten the wastewater treatment facility near this height.
30.5	Flood waters reach the floor of the gage house.
27.9	U.S. Highway 51 south of Vandalia begins to flood near this height.
27.5	Near this level, the left bank levee just south of the U.S. Highway 51 bridge is overtopped.
26	The Dively and Vandalia Levees begin to be overtopped.
25.8	Along South 4th Street, numerous homes begin flooding near the St. Clair Street intersection.
25.5	South 4th Street begins flooding near and south of Jefferson Street in Vandalia.
23	Agricultural levee begins to be slightly overtopped. No residences are affected at this level.
19.2	State Highway J just east of County Road 206 begins to flood near this height.
18	Flood Stage. Minor flooding begins. Unprotected farmland begins to flood.
Photos (1) Levee just south of U.S. Hwy 51 bridge on March 20, 2008 at 26.48 feet. (2) The Zone Heath Club at Jefferson and N. 4th Sts. on March 20, 2010 at a stage of 26.48 ft. (3) Homes along North 4th St. at St. Clair St. on March 20, 2008 at a stage of 26.48 ft. (4) Homes along North 4th St. in Vandalia on March 20, 2008 at a stage of 26.48 ft. (5) Home on North 4th St. at St. Clair St. in Vandalia on March 20, 2008 at a stage of 26.48 ft. (6) North 4th Street at Jefferson Street in Vandalia on March 20, 2008 at a stage of 26.5 feet. (7) Cropland east of U.S. Highway 51 south of the bridge on March 20, 2008 at 26.4 ft. (8) Kaskaskia River at low flow looking upstream from the U.S. Highway 51 bridge. (9) Kaskaskia River at low flow looking downstream from the U.S. Hwy 51 bridge. (10) Vandalia gaging shelter at the U.S. Highway 51 bridge.

About This Location

Latitude: 38.960610° N, Longitude: 89.088801° W, Horizontal Datum: NAD83/WGS84

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS stage	0 ft	18 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	452.68 ft	470.68 ft	Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29	453.3 ft	471.3 ft	Older USGS topographic maps, NGVD29 benchmarks
MSL	Not Available	Not Available	Older USGS topographic maps, MSL benchmarks
Other	Not Available	Not Available

Current/Historical Observations:

U.S. Geological Survey (USGS) Data and Site Info for Vandalia

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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