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Hydrograph River at a Glance Download
Missouri River at Gasconade Stage (ft)Flow (kcfs)GSCM7(plotting HGIRZ) Graph Created (11:41AM Jan 18, 2021)Flood Stage is 22 ft
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Tabular Data (CST)
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Datum: Not Available
NOTE: Flood only forecasts for this location have recently been discontinued due to limited observed gage readings.

Reliability of the Forecast: Unavailable due to missing or inaccurate readings

NOTE: Graphical forecasts are not available for the Missouri River at Gasconade. During times of high water, forecast crest information can be found in the text products.

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Upstream Gauge - near Chamois Upstream Gauge Downstream Gauge Downstream Gauge - at Hermann
Flood Categories (in feet)
Major Flood Stage: 37
Moderate Flood Stage: 34
Flood Stage: 22
Action Stage: 20
Low Stage (in feet): 0

Historic Crests
(1) 39.60 ft on 07/31/1993
(2) 39.00 ft on 05/04/2017
(3) 38.60 ft on 10/06/1986
(4) 37.90 ft on 12/30/2015
(5) 37.60 ft on 05/19/1995
(6) 36.40 ft on 04/24/1973
(7) 35.80 ft on 06/07/2019
(8) 35.50 ft on 05/03/1983
(9) 35.40 ft on 02/25/1985
(10) 35.40 ft on 06/01/2013
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 28.30 ft on 05/30/2020
(2) 23.30 ft on 05/18/2020
(3) 23.40 ft on 04/28/2020
(4) 27.30 ft on 03/21/2020
(5) 23.50 ft on 03/12/2020
(6) 27.80 ft on 01/12/2020
(7) 23.00 ft on 11/01/2019
(8) 22.70 ft on 10/11/2019
(9) 23.80 ft on 09/26/2019
(10) 26.40 ft on 09/02/2019
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 1.00 ft on 12/26/1963
(2) 1.00 ft on 01/08/1947
(3) 1.50 ft on 01/22/1957
Show More Low Water Records
Zoom Level:14
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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
38 Homes and structures on the east side of Gasconade begin flooding along the Gasconade River. In December, 2015, with major flood flow from the Gasconade River, water levels in town were actually higher than in 1993.
37.6 Near this height, Missouri Highway 100 will be closed through Gasconade.
37.5 Near this height, Route Z west of Morrison will be closed in both directions.
36.7 The Tri-County Levee Section One along the left bank between Bluffton and McKittrick will overtop near this height.
36.5 Cropland south of Gasconade begins flooding near this height.
35.5 A house at the end of Oak Street in Gasconade begins flooding at the base of the concrete foundation.
34.79 The Corps of Engineers Gasconade Harbor Facility boatyard area begins to flood.
33 The Diermann levee about 4 miles upstream of Gasconade will overtop near this height.
32.5 Highway 100 between Morrison and State Route Z begins flooding near this level.
32 The east end of Oak Street in Gasconade begins flooding near this level.
24.5 Southern portions of Old Rock Road and Twisters Road south of Rhineland begin flooding near this height.
23.5 The southern end of School House Road south of Rhineland begins flooding near this height.
22.4 Gasconade Park boat ramp...BBQ grills...and parking area begins flooding near this height.
22 Minor flooding of cropland begins.
(1) Gasconade residence threatened on Septembe 17, 2008 at 33.1 ft.
(2) Oak Street in Gasconade on September 17, 2008 at 33.1 ft.
(3) Missouri Highway 100 eastbound at Highway Z near Morrison on September 17, 2008 at 33.1 ft.
(4) Minor flood of May 10, 2007 near the mouth of the Gasconade River with a stage near 28.6 ft.
(5) Minor flood of May 10, 2007 at confluence of Missouri and Gasconade Rivers near 28.6 feet.
(6) Lower sectional staff gage during minor flood of May 10, 2007 near 28.6 feet.
(7) Gasconade slope gage on July 21, 2011.
(8) Lower sectional staff gage at Gasconade, Missouri.
(9) Upper sectional staff gage at Gasconade, Missouri.
(10) View looking upstream
(11) View looking downstream
About This Location Collapse

Latitude: 38.674570° N, Longitude: 91.552059° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 22 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(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 29 484.8 ft 506.8 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
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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: 2-Nov-2020 7:29 PM
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