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Over 200 USGS real-time streamgages used to support NWS river forecasts and warnings are at risk of being discontinued. Click here for more information from the USGS...
Weather Forecast Office St. Louis, MO Missouri Basin River Forecast Center
Hydrograph River at a Glance Download
Osage River near St. Thomas Stage (ft)Flow (kcfs)Observed: 12.94 ft at 2:15AM May 14, 2013Observed: 12.9 ft at 2:30AM May 14, 2013Observed: 12.91 ft at 2:45AM May 14, 2013Observed: 12.92 ft at 3:00AM May 14, 2013Observed: 12.96 ft at 3:15AM May 14, 2013Observed: 12.95 ft at 3:30AM May 14, 2013Observed: 12.91 ft at 3:45AM May 14, 2013Observed: 12.91 ft at 4:00AM May 14, 2013Observed: 12.93 ft at 4:15AM May 14, 2013Observed: 12.94 ft at 4:30AM May 14, 2013Observed: 12.9 ft at 4:45AM May 14, 2013Observed: 12.92 ft at 5:00AM May 14, 2013Observed: 12.93 ft at 5:15AM May 14, 2013Observed: 12.88 ft at 5:30AM May 14, 2013Observed: 12.87 ft at 5:45AM May 14, 2013Observed: 12.87 ft at 6:00AM May 14, 2013Observed: 12.91 ft at 6:15AM May 14, 2013Observed: 12.85 ft at 6:30AM May 14, 2013Observed: 12.87 ft at 6:45AM May 14, 2013Observed: 12.87 ft at 7:00AM May 14, 2013Observed: 12.84 ft at 7:15AM May 14, 2013Observed: 12.85 ft at 7:30AM May 14, 2013Observed: 12.83 ft at 7:45AM May 14, 2013Observed: 12.8 ft at 8:00AM May 14, 2013Observed: 12.8 ft at 8:15AM May 14, 2013Observed: 12.76 ft at 8:30AM May 14, 2013Observed: 12.71 ft at 8:45AM May 14, 2013Observed: 12.74 ft at 9:00AM May 14, 2013Observed: 12.7 ft at 9:15AM May 14, 2013Observed: 12.7 ft at 9:30AM May 14, 2013Observed: 12.63 ft at 9:45AM May 14, 2013Observed: 12.66 ft at 10:00AM May 14, 2013Observed: 12.61 ft at 10:15AM May 14, 2013Observed: 12.65 ft at 10:30AM May 14, 2013Observed: 12.64 ft at 10:45AM May 14, 2013Observed: 12.61 ft at 11:00AM May 14, 2013Observed: 12.55 ft at 11:15AM May 14, 2013Observed: 12.5 ft at 11:16AM May 14, 2013Observed: 12.5 ft at 11:30AM May 14, 2013Observed: 12.55 ft at 11:31AM May 14, 2013Observed: 12.55 ft at 11:45AM May 14, 2013Observed: 12.53 ft at 11:46AM May 14, 2013Observed: 12.53 ft at 12:00PM May 14, 2013Observed: 12.52 ft at 12:15PM May 14, 2013Observed: 12.49 ft at 12:30PM May 14, 2013Observed: 12.48 ft at 12:45PM May 14, 2013Observed: 12.46 ft at 1:00PM May 14, 2013Observed: 12.44 ft at 1:15PM May 14, 2013Observed: 12.47 ft at 1:30PM May 14, 2013Observed: 12.42 ft at 1:45PM May 14, 2013Observed: 12.43 ft at 2:00PM May 14, 2013Observed: 12.43 ft at 2:15PM May 14, 2013Observed: 12.44 ft at 2:30PM May 14, 2013Observed: 12.39 ft at 2:45PM May 14, 2013Observed: 12.43 ft at 3:00PM May 14, 2013Observed: 12.42 ft at 3:15PM May 14, 2013Observed: 12.42 ft at 3:45PM May 14, 2013Observed: 12.41 ft at 4:00PM May 14, 2013Observed: 12.43 ft at 4:15PM May 14, 2013Observed: 12.45 ft at 4:30PM May 14, 2013Observed: 12.41 ft at 4:45PM May 14, 2013Observed: 12.42 ft at 5:00PM May 14, 2013Observed: 12.44 ft at 5:15PM May 14, 2013Observed: 12.45 ft at 5:30PM May 14, 2013Observed: 12.45 ft at 5:45PM May 14, 2013Observed: 12.48 ft at 6:00PM May 14, 2013Observed: 12.51 ft at 6:15PM May 14, 2013Observed: 12.52 ft at 6:30PM May 14, 2013Observed: 12.54 ft at 6:45PM May 14, 2013Observed: 12.56 ft at 7:00PM May 14, 2013Observed: 12.55 ft at 7:15PM May 14, 2013Observed: 12.53 ft at 7:30PM May 14, 2013Observed: 12.53 ft at 7:31PM May 14, 2013Observed: 12.57 ft at 7:45PM May 14, 2013Observed: 12.57 ft at 7:46PM May 14, 2013Observed: 12.6 ft at 8:00PM May 14, 2013Observed: 12.6 ft at 8:01PM May 14, 2013Observed: 12.62 ft at 8:15PM May 14, 2013Observed: 12.62 ft at 8:16PM May 14, 2013Observed: 12.62 ft at 8:30PM May 14, 2013Observed: 12.63 ft at 8:45PM May 14, 2013Observed: 12.63 ft at 9:00PM May 14, 2013Observed: 12.64 ft at 9:15PM May 14, 2013Observed: 12.64 ft at 9:30PM May 14, 2013Observed: 12.64 ft at 9:45PM May 14, 2013Observed: 12.66 ft at 10:00PM May 14, 2013Observed: 12.71 ft at 10:15PM May 14, 2013Observed: 12.74 ft at 10:30PM May 14, 2013Observed: 12.73 ft at 10:45PM May 14, 2013Observed: 12.74 ft at 11:00PM May 14, 2013Observed: 12.79 ft at 11:15PM May 14, 2013Observed: 12.76 ft at 11:30PM May 14, 2013Observed: 12.8 ft at 11:45PM May 14, 2013Observed: 12.82 ft at 12:00AM May 15, 2013Observed: 12.81 ft at 12:15AM May 15, 2013Observed: 12.82 ft at 12:30AM May 15, 2013Observed: 12.83 ft at 12:45AM May 15, 2013Observed: 12.87 ft at 1:00AM May 15, 2013Observed: 12.88 ft at 1:15AM May 15, 2013Observed: 12.87 ft at 1:30AM May 15, 2013Observed: 12.89 ft at 1:45AM May 15, 2013Observed: 12.91 ft at 2:00AM May 15, 2013Observed: 12.93 ft at 2:15AM May 15, 2013Observed: 12.94 ft at 2:30AM May 15, 2013Observed: 12.94 ft at 2:45AM May 15, 2013Observed: 12.93 ft at 3:00AM May 15, 2013Observed: 12.96 ft at 3:15AM May 15, 2013Observed: 12.96 ft at 3:30AM May 15, 2013Observed: 12.96 ft at 3:31AM May 15, 2013Observed: 12.98 ft at 3:45AM May 15, 2013Observed: 12.98 ft at 3:46AM May 15, 2013Observed: 12.98 ft at 4:00AM May 15, 2013Observed: 12.98 ft at 4:01AM May 15, 2013Observed: 12.98 ft at 4:15AM May 15, 2013Observed: 12.98 ft at 4:16AM May 15, 2013Observed: 13 ft at 4:30AM May 15, 2013Observed: 13.02 ft at 4:45AM May 15, 2013Observed: 13.03 ft at 5:00AM May 15, 2013Observed: 13.02 ft at 5:15AM May 15, 2013Observed: 13.03 ft at 5:30AM May 15, 2013Observed: 13.06 ft at 5:45AM May 15, 2013Observed: 13.03 ft at 6:00AM May 15, 2013Observed: 13.06 ft at 6:15AM May 15, 2013Observed: 13.06 ft at 6:30AM May 15, 2013Observed: 13.07 ft at 6:45AM May 15, 2013Observed: 13.04 ft at 7:00AM May 15, 2013Observed: 13.11 ft at 7:15AM May 15, 2013Observed: 13.03 ft at 7:30AM May 15, 2013Observed: 13.13 ft at 7:45AM May 15, 2013Highest Observation: 13.14 ft at 8:00AM May 15, 2013Observed: 13.07 ft at 8:15AM May 15, 2013Observed: 13.13 ft at 8:30AM May 15, 2013Highest Observation: 13.14 ft at 8:45AM May 15, 2013USGS--Water Resources of the United StatesSTTM7(plotting HGIRG) Graph Created (1:55AM May 21, 2013)ObservedLatest observed value: 13.14 ft at 8:45 AM CDT 15-May-2013. Flood Stage is 23 ft
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Datum: NGVD29
Metadata
NOTE: 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.

NOTE: Forecasts for the Osage River near St. Thomas are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - near Schell City Upstream Gauge
Flood Categories (in feet)
Major Flood Stage:35
Moderate Flood Stage:30
Flood Stage:23
Action Stage:16

Historical Crests
(1) 25.50 ft on 09/26/1993
(2) 23.37 ft on 01/06/2005
(3) 21.86 ft on 06/26/1998
(4) 20.99 ft on 04/01/2008
(5) 20.94 ft on 06/17/2009
(6) 19.78 ft on 10/06/1998
(7) 18.82 ft on 05/21/2011
(8) 18.14 ft on 04/21/2010
(9) 17.73 ft on 05/13/2002
(10) 17.08 ft on 07/19/2007
Show More Historical Crests

Low Water Records
(1) 1.66 ft on 10/07/2000
(2) 1.66 ft on 09/26/2001
(3) 1.75 ft on 10/08/2002
Show More Low Water Records
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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 Collapse
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.
About This Location Collapse

Latitude: 38.421389° N, Longitude: 92.208333° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 23 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 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 525.72 ft 548.72 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Other Data Sources:
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Hydrologic Resources Additional Resources
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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: 13-Mar-2013 6:27 PM 		Disclaimer
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