Skip Navigation Link  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Navigation Bar End Cap


This probabilistic forecast is issued by the Missouri Basin River Forecast Center.
tab left off Hydrograph tab right off tab left off River at a Glance tab right off tab left off Download tab right off tab left on tab right on
About this graph
Forecasts for the Osage River near St. Thomas are issued as needed during times of high water, but are not routinely available.
Return to Area Map

Downstream Gauge Downstream Gauge - at Mari-Osa Campground
Zoom Level:14
Flood Categories (in feet)
Major Flood Stage: 35
Moderate Flood Stage: 30
Flood Stage: 23
Action Stage: 16
Low Stage (in feet): -9999

Historic Crests
(1) 29.53 ft on 12/29/2015
(2) 25.45 ft on 05/01/2017
(3) 25.04 ft on 08/08/2013
(4) 23.95 ft on 07/03/2015
(5) 23.37 ft on 01/06/2005
(6) 23.13 ft on 05/04/2017
(7) 21.86 ft on 06/26/1998
(8) 20.99 ft on 04/01/2008
(9) 20.94 ft on 06/17/2009
(10) 19.78 ft on 10/06/1998
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 23.13 ft on 05/04/2017
(2) 25.45 ft on 05/01/2017
(3) 29.53 ft on 12/29/2015
(4) 23.95 ft on 07/03/2015
(5) 25.04 ft on 08/08/2013
(6) 18.82 ft on 05/21/2011
(7) 18.14 ft on 04/21/2010
(8) 20.94 ft on 06/17/2009
(9) 20.99 ft on 04/01/2008
(10) 17.08 ft on 07/19/2007
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 1.66 ft on 09/26/2001
(2) 1.66 ft on 10/07/2000
(3) 1.75 ft on 10/08/2002
Show More Low Water Records
KML Image
Gauge LocationGauge Map Marker
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 Collapse
If you notice any errors in the below information, please contact our Webmaster
34.7 Additional residences along Spring Beauty Lane become threatened near this height.
32.7 Residence near end of Spring Beauty Lane begins flooding near this height.
31.7 Second residence along Old Ferry Road upstream of Route B bridge begins flooding near this height.
28.4 Lowest residence at the end of Spring Beauty Lane begins flooding near this height.
26.6 Lowest house on Old Ferry Road upstream of the bridge begins flooding near this height.
23 Near this height, Route W in Cole County will be closed in both directions.
20.5 At least two farm houses become cut off by the rising water near the mouth of Profits Creek.
17 At least 5 acres of farmland are flooded near the mouth of Profits Creek downstream of the gauge.
16.5 Water begins flooding the bank near Profits Creek mouth downstream of the gauge.

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
How low could the river get?
Collaborative Agencies Collapse
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
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:29 PM
Privacy Policy
About Us
Career Opportunities