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Hydrograph River at a Glance Download
Mississippi River at Winfield Lock and Dam 25 Tailwater (ft)Flow (kcfs)Observed: 23.31 ft at 7:00AM May 22, 2022Observed: 23.32 ft at 7:30AM May 22, 2022Highest Observation: 23.33 ft at 8:00AM May 22, 2022Observed: 23.32 ft at 8:30AM May 22, 2022Highest Observation: 23.33 ft at 9:00AM May 22, 2022Observed: 23.32 ft at 9:30AM May 22, 2022Observed: 23.32 ft at 10:00AM May 22, 2022Observed: 23.31 ft at 10:30AM May 22, 2022Highest Observation: 23.33 ft at 11:00AM May 22, 2022Highest Observation: 23.33 ft at 11:30AM May 22, 2022Observed: 23.32 ft at 12:00PM May 22, 2022Observed: 23.32 ft at 12:30PM May 22, 2022Observed: 23.31 ft at 1:00PM May 22, 2022Observed: 23.32 ft at 1:30PM May 22, 2022Observed: 23.31 ft at 2:00PM May 22, 2022Observed: 23.3 ft at 2:30PM May 22, 2022Observed: 23.28 ft at 3:00PM May 22, 2022Observed: 23.29 ft at 3:30PM May 22, 2022Observed: 23.28 ft at 4:00PM May 22, 2022Observed: 23.3 ft at 4:30PM May 22, 2022Observed: 23.23 ft at 5:00PM May 22, 2022Observed: 23.26 ft at 5:30PM May 22, 2022Observed: 23.25 ft at 6:00PM May 22, 2022Observed: 23.24 ft at 6:30PM May 22, 2022Observed: 23.22 ft at 7:00PM May 22, 2022Observed: 23.21 ft at 7:30PM May 22, 2022Observed: 23.2 ft at 8:00PM May 22, 2022Observed: 23.19 ft at 8:30PM May 22, 2022Observed: 23.17 ft at 9:00PM May 22, 2022Observed: 23.15 ft at 9:30PM May 22, 2022Observed: 23.13 ft at 10:00PM May 22, 2022Observed: 23.12 ft at 10:30PM May 22, 2022Observed: 23.1 ft at 11:00PM May 22, 2022Observed: 23.09 ft at 11:30PM May 22, 2022Observed: 23.06 ft at 12:00AM May 23, 2022Observed: 23.05 ft at 12:30AM May 23, 2022Observed: 23.04 ft at 1:00AM May 23, 2022Observed: 23.02 ft at 1:30AM May 23, 2022Observed: 23 ft at 2:00AM May 23, 2022Observed: 22.99 ft at 2:30AM May 23, 2022Observed: 22.96 ft at 3:00AM May 23, 2022Observed: 22.94 ft at 3:30AM May 23, 2022Observed: 22.93 ft at 4:00AM May 23, 2022Observed: 22.91 ft at 4:30AM May 23, 2022Observed: 22.89 ft at 5:00AM May 23, 2022Observed: 22.86 ft at 5:30AM May 23, 2022Observed: 22.86 ft at 6:00AM May 23, 2022Observed: 22.84 ft at 6:30AM May 23, 2022Observed: 22.83 ft at 7:00AM May 23, 2022Observed: 22.81 ft at 7:30AM May 23, 2022Observed: 22.79 ft at 8:00AM May 23, 2022Observed: 22.77 ft at 8:30AM May 23, 2022Observed: 22.75 ft at 9:00AM May 23, 2022Observed: 22.74 ft at 9:30AM May 23, 2022Observed: 22.73 ft at 10:00AM May 23, 2022Observed: 22.71 ft at 10:30AM May 23, 2022Observed: 22.71 ft at 11:00AM May 23, 2022Observed: 22.69 ft at 11:30AM May 23, 2022Observed: 22.68 ft at 12:00PM May 23, 2022Observed: 22.66 ft at 12:30PM May 23, 2022Observed: 22.66 ft at 1:00PM May 23, 2022Observed: 22.64 ft at 1:30PM May 23, 2022Observed: 22.64 ft at 2:00PM May 23, 2022Observed: 22.61 ft at 2:30PM May 23, 2022Observed: 22.6 ft at 3:00PM May 23, 2022Observed: 22.6 ft at 3:30PM May 23, 2022Observed: 22.57 ft at 4:00PM May 23, 2022Observed: 22.57 ft at 4:30PM May 23, 2022Observed: 22.55 ft at 5:00PM May 23, 2022Observed: 22.55 ft at 5:30PM May 23, 2022Observed: 22.54 ft at 6:00PM May 23, 2022Observed: 22.53 ft at 6:30PM May 23, 2022Observed: 22.53 ft at 7:00PM May 23, 2022Observed: 22.51 ft at 7:30PM May 23, 2022Observed: 22.5 ft at 8:00PM May 23, 2022Observed: 22.48 ft at 8:30PM May 23, 2022Observed: 22.49 ft at 9:00PM May 23, 2022Observed: 22.48 ft at 9:30PM May 23, 2022Observed: 22.47 ft at 10:00PM May 23, 2022Observed: 22.47 ft at 10:30PM May 23, 2022Observed: 22.46 ft at 11:00PM May 23, 2022Observed: 22.45 ft at 11:30PM May 23, 2022Observed: 22.45 ft at 12:00AM May 24, 2022Observed: 22.46 ft at 12:30AM May 24, 2022Observed: 22.45 ft at 1:00AM May 24, 2022Observed: 22.44 ft at 1:30AM May 24, 2022Observed: 22.44 ft at 2:00AM May 24, 2022Observed: 22.45 ft at 2:30AM May 24, 2022Observed: 22.43 ft at 3:00AM May 24, 2022Observed: 22.41 ft at 3:30AM May 24, 2022Observed: 22.43 ft at 4:00AM May 24, 2022Observed: 22.42 ft at 4:30AM May 24, 2022Observed: 22.43 ft at 5:00AM May 24, 2022Observed: 22.41 ft at 5:30AM May 24, 2022Observed: 22.42 ft at 6:00AM May 24, 2022Observed: 22.41 ft at 6:30AM May 24, 2022Observed: 22.4 ft at 7:00AM May 24, 2022Observed: 22.38 ft at 7:30AM May 24, 2022Observed: 22.37 ft at 8:00AM May 24, 2022Observed: 22.39 ft at 8:30AM May 24, 2022Observed: 22.39 ft at 9:00AM May 24, 2022Observed: 22.37 ft at 9:30AM May 24, 2022Observed: 22.38 ft at 10:00AM May 24, 2022Observed: 22.4 ft at 10:30AM May 24, 2022Observed: 22.37 ft at 11:00AM May 24, 2022Observed: 22.38 ft at 11:30AM May 24, 2022Observed: 22.37 ft at 12:00PM May 24, 2022Observed: 22.39 ft at 1:00PM May 24, 2022Observed: 22.38 ft at 1:30PM May 24, 2022Observed: 22.38 ft at 2:00PM May 24, 2022Observed: 22.37 ft at 2:30PM May 24, 2022Observed: 22.38 ft at 3:00PM May 24, 2022Observed: 22.38 ft at 3:30PM May 24, 2022Observed: 22.38 ft at 4:00PM May 24, 2022Observed: 22.38 ft at 4:30PM May 24, 2022Observed: 22.37 ft at 5:00PM May 24, 2022Observed: 22.37 ft at 5:30PM May 24, 2022Observed: 22.34 ft at 6:00PM May 24, 2022Observed: 22.37 ft at 6:30PM May 24, 2022Observed: 22.37 ft at 7:00PM May 24, 2022Observed: 22.37 ft at 7:30PM May 24, 2022Observed: 22.35 ft at 8:00PM May 24, 2022Observed: 22.38 ft at 8:30PM May 24, 2022Observed: 22.37 ft at 9:00PM May 24, 2022Observed: 22.37 ft at 9:30PM May 24, 2022Observed: 22.36 ft at 10:00PM May 24, 2022Observed: 22.38 ft at 10:30PM May 24, 2022Observed: 22.39 ft at 11:00PM May 24, 2022Observed: 22.39 ft at 11:30PM May 24, 2022Observed: 22.39 ft at 12:00AM May 25, 2022Observed: 22.38 ft at 12:30AM May 25, 2022Observed: 22.39 ft at 1:00AM May 25, 2022Observed: 22.39 ft at 1:30AM May 25, 2022Observed: 22.39 ft at 2:00AM May 25, 2022Observed: 22.38 ft at 2:30AM May 25, 2022Observed: 22.39 ft at 3:00AM May 25, 2022Observed: 22.39 ft at 3:30AM May 25, 2022Observed: 22.39 ft at 4:00AM May 25, 2022Observed: 22.39 ft at 4:30AM May 25, 2022Observed: 22.4 ft at 5:00AM May 25, 2022Observed: 22.39 ft at 5:30AM May 25, 2022Observed: 22.39 ft at 6:00AM May 25, 2022Observed: 22.38 ft at 6:30AM May 25, 2022Observed: 22.38 ft at 7:00AM May 25, 2022Observed: 22.37 ft at 7:30AM May 25, 2022Observed: 22.39 ft at 8:00AM May 25, 2022Observed: 22.39 ft at 8:30AM May 25, 2022Observed: 22.39 ft at 9:00AM May 25, 2022Observed: 22.39 ft at 9:30AM May 25, 2022Observed: 22.38 ft at 10:00AM May 25, 2022Observed: 22.38 ft at 10:30AM May 25, 2022Observed: 22.38 ft at 11:00AM May 25, 2022Observed: 22.39 ft at 11:30AM May 25, 2022Observed: 22.38 ft at 12:00PM May 25, 2022Observed: 22.4 ft at 12:30PM May 25, 2022Observed: 22.4 ft at 1:00PM May 25, 2022Observed: 22.36 ft at 1:30PM May 25, 2022Observed: 22.39 ft at 2:00PM May 25, 2022Observed: 22.38 ft at 2:30PM May 25, 2022Observed: 22.38 ft at 3:00PM May 25, 2022Observed: 22.38 ft at 3:30PM May 25, 2022Observed: 22.38 ft at 4:00PM May 25, 2022Observed: 22.37 ft at 4:30PM May 25, 2022Observed: 22.37 ft at 5:00PM May 25, 2022Observed: 22.38 ft at 5:30PM May 25, 2022Observed: 22.38 ft at 6:00PM May 25, 2022Observed: 22.39 ft at 6:30PM May 25, 2022Observed: 22.39 ft at 7:00PM May 25, 2022Observed: 22.39 ft at 7:30PM May 25, 2022Observed: 22.4 ft at 8:00PM May 25, 2022Observed: 22.41 ft at 8:30PM May 25, 2022Observed: 22.4 ft at 9:00PM May 25, 2022Observed: 22.42 ft at 9:30PM May 25, 2022Observed: 22.42 ft at 10:00PM May 25, 2022Observed: 22.42 ft at 10:30PM May 25, 2022Observed: 22.44 ft at 11:00PM May 25, 2022Observed: 22.45 ft at 11:30PM May 25, 2022Observed: 22.46 ft at 12:00AM May 26, 2022Observed: 22.47 ft at 12:30AM May 26, 2022Observed: 22.48 ft at 1:00AM May 26, 2022Observed: 22.48 ft at 1:30AM May 26, 2022Observed: 22.49 ft at 2:00AM May 26, 2022Observed: 22.5 ft at 2:30AM May 26, 2022Observed: 22.51 ft at 3:00AM May 26, 2022Observed: 22.52 ft at 3:30AM May 26, 2022Observed: 22.54 ft at 4:00AM May 26, 2022Observed: 22.55 ft at 4:30AM May 26, 2022Observed: 22.57 ft at 5:00AM May 26, 2022Observed: 22.58 ft at 5:30AM May 26, 2022Observed: 22.6 ft at 6:00AM May 26, 2022Observed: 22.62 ft at 6:30AM May 26, 2022Observed: 22.62 ft at 7:00AM May 26, 2022Observed: 22.65 ft at 7:30AM May 26, 2022Observed: 22.67 ft at 8:00AM May 26, 2022Observed: 22.68 ft at 8:30AM May 26, 2022Observed: 22.69 ft at 9:00AM May 26, 2022Observed: 22.71 ft at 9:30AM May 26, 2022Observed: 22.74 ft at 10:00AM May 26, 2022Observed: 22.73 ft at 10:30AM May 26, 2022Observed: 22.76 ft at 11:00AM May 26, 2022Observed: 22.75 ft at 11:30AM May 26, 2022Observed: 22.76 ft at 12:00PM May 26, 2022Observed: 22.79 ft at 12:30PM May 26, 2022Observed: 22.79 ft at 1:00PM May 26, 2022Observed: 22.81 ft at 1:30PM May 26, 2022Observed: 22.83 ft at 2:00PM May 26, 2022Observed: 22.83 ft at 2:30PM May 26, 2022Observed: 22.85 ft at 3:00PM May 26, 2022Observed: 22.88 ft at 3:30PM May 26, 2022Observed: 22.89 ft at 4:00PM May 26, 2022Observed: 22.89 ft at 4:30PM May 26, 2022Observed: 22.91 ft at 5:00PM May 26, 2022Observed: 22.92 ft at 5:30PM May 26, 2022Observed: 22.94 ft at 6:00PM May 26, 2022Observed: 22.95 ft at 6:30PM May 26, 2022Observed: 22.97 ft at 7:00PM May 26, 2022Observed: 22.98 ft at 7:30PM May 26, 2022Observed: 22.99 ft at 8:00PM May 26, 2022Observed: 23 ft at 8:30PM May 26, 2022Observed: 23 ft at 9:00PM May 26, 2022Observed: 23.02 ft at 9:30PM May 26, 2022Observed: 23.03 ft at 10:00PM May 26, 2022Observed: 23.04 ft at 10:30PM May 26, 2022Observed: 23.04 ft at 11:00PM May 26, 2022Observed: 23.04 ft at 11:30PM May 26, 2022Observed: 23.06 ft at 12:00AM May 27, 2022Observed: 23.07 ft at 12:30AM May 27, 2022Observed: 23.08 ft at 1:00AM May 27, 2022Observed: 23.09 ft at 1:30AM May 27, 2022Observed: 23.09 ft at 2:00AM May 27, 2022Observed: 23.1 ft at 2:30AM May 27, 2022Observed: 23.1 ft at 3:00AM May 27, 2022Observed: 23.11 ft at 3:30AM May 27, 2022Observed: 23.11 ft at 4:00AM May 27, 2022Observed: 23.11 ft at 4:30AM May 27, 2022Observed: 23.13 ft at 5:00AM May 27, 2022Observed: 23.13 ft at 5:30AM May 27, 2022Observed: 23.13 ft at 6:00AM May 27, 2022Observed: 23.14 ft at 6:30AM May 27, 2022Forecast: 23.2 ft 7:00AM May 27, 2022Forecast: 23.3 ft 1:00PM May 27, 2022Forecast: 23.4 ft 7:00PM May 27, 2022Forecast: 23.6 ft 1:00AM May 28, 2022Forecast: 23.8 ft 7:00AM May 28, 2022Forecast: 23.9 ft 1:00PM May 28, 2022Forecast: 24 ft 7:00PM May 28, 2022Forecast: 24.1 ft 1:00AM May 29, 2022Forecast: 24.1 ft 7:00AM May 29, 2022Forecast: 24.1 ft 1:00PM May 29, 2022Forecast: 24.1 ft 7:00PM May 29, 2022Forecast: 24.1 ft 1:00AM May 30, 2022Forecast: 24.1 ft 7:00AM May 30, 2022Forecast: 24.1 ft 1:00PM May 30, 2022Forecast: 24.2 ft 7:00PM May 30, 2022Forecast: 24.2 ft 1:00AM May 31, 2022Forecast: 24.2 ft 7:00AM May 31, 2022Forecast: 24.2 ft 1:00PM May 31, 2022Forecast: 24.3 ft 7:00PM May 31, 2022Forecast: 24.3 ft 1:00AM Jun 01, 2022Forecast: 24.3 ft 7:00AM Jun 01, 2022Highest Forecast: 24.4 ft 1:00PM Jun 01, 2022Highest Forecast: 24.4 ft 7:00PM Jun 01, 2022Highest Forecast: 24.4 ft 1:00AM Jun 02, 2022Forecast: 24.3 ft 7:00AM Jun 02, 2022Forecast: 24.3 ft 1:00PM Jun 02, 2022Forecast: 24.3 ft 7:00PM Jun 02, 2022Forecast: 24.3 ft 1:00AM Jun 03, 2022Forecast: 24.2 ft 7:00AM Jun 03, 2022Forecast: 24.2 ft 1:00PM Jun 03, 2022Forecast: 24.1 ft 7:00PM Jun 03, 2022Forecast: 24.1 ft 1:00AM Jun 04, 2022Forecast: 24.1 ft 7:00AM Jun 04, 2022Forecast: 24 ft 1:00PM Jun 04, 2022Forecast: 23.9 ft 7:00PM Jun 04, 2022Forecast: 23.8 ft 1:00AM Jun 05, 2022Forecast: 23.7 ft 7:00AM Jun 05, 2022Forecast: 23.6 ft 1:00PM Jun 05, 2022Forecast: 23.6 ft 7:00PM Jun 05, 2022Forecast: 23.5 ft 1:00AM Jun 06, 2022Forecast: 23.4 ft 7:00AM Jun 06, 2022Forecast: 23.3 ft 1:00PM Jun 06, 2022Forecast: 23.2 ft 7:00PM Jun 06, 2022Forecast: 23.1 ft 1:00AM Jun 07, 2022Forecast: 23 ft 7:00AM Jun 07, 2022Forecast: 22.9 ft 1:00PM Jun 07, 2022Forecast: 22.8 ft 7:00PM Jun 07, 2022Forecast: 22.7 ft 1:00AM Jun 08, 2022Forecast: 22.6 ft 7:00AM Jun 08, 2022Forecast: 22.5 ft 1:00PM Jun 08, 2022Forecast: 22.4 ft 7:00PM Jun 08, 2022Forecast: 22.3 ft 1:00AM Jun 09, 2022Forecast: 22.2 ft 7:00AM Jun 09, 2022Forecast: 22.1 ft 1:00PM Jun 09, 2022Forecast: 22 ft 7:00PM Jun 09, 2022CAGM7(plotting HTIRG) Graph Created (6:55AM May 27, 2022)ObservedForecast (issued 9:08PM May 26)Latest observed value: 23.14 ft at 6:30 AM CDT 27-May-2022. Flood Stage is 26 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: Not Available
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: 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 Winfield Lock and Dam 25 are issued routinely year-round.

Return to Area Map
Upstream Gauge - at Mozier Landing Upstream Gauge Downstream Gauge Downstream Gauge - at Grafton
Flood Categories (in feet)
Major Flood Stage: 34
Moderate Flood Stage: 30
Flood Stage: 26
Action Stage: 24
Low Stage (in feet): -9999

Historic Crests
(1) 39.62 ft on 08/01/1993
(2) 39.02 ft on 06/02/2019
(3) 38.59 ft on 06/04/2019
(4) 37.08 ft on 06/27/2008
(5) 36.93 ft on 04/27/1973
(6) 35.40 ft on 04/23/2013
(7) 34.70 ft on 07/10/2014
(8) 34.68 ft on 05/18/2001
(9) 34.39 ft on 12/30/2015
(10) 34.20 ft on 04/14/1979
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 27.70 ft on 04/14/2021
(2) 27.83 ft on 03/20/2021
(3) 27.23 ft on 07/03/2020
(4) 27.79 ft on 06/13/2020
(5) 26.21 ft on 05/18/2020
(6) 29.49 ft on 04/01/2020
(7) 29.61 ft on 10/19/2019
(8) 38.59 ft on 06/04/2019
(9) 39.02 ft on 06/02/2019
(10) 26.34 ft on 11/06/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 5.95 ft on 12/29/1933
(2) 6.89 ft on 12/10/1937
(3) 8.55 ft on 01/19/1938
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:14
KML Image
Gauge LocationGauge Map Marker
 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
If you notice any errors in the below information, please contact our Webmaster
145000 This is the flow at which CAGM7 will go to "open river" conditions.
37.1 This is the level at which the Winfield levee failed in June 2008.
37 Water reaches the top of the lock wall. Also at this level water completely floods Lock and Dam Park in Winfield. Highway 79 is closed a half mile south of Highway 47 for another half mile.
36.29 Highway 79 is closed through the town of Foley.
35.6 Highway 79 is closed from Winfield north to Route Y.
35.5 Highway 79 is closed from Bobs Creek to one mile south.
35.1 The levee behind Lock and Dam 25 will overtop at this height without additional protection.
34.6 Route M is closed south of Elsberry from Highway 79 east to where state maintenance ends near Apex Lane.
34.5 Near this height, the office building and storage building of Kimaterials, a sand and gravel company on Highway 79 between Winfield and Old Monroe, begins flooding. Also, the Corps has not kept Lock 25 open above this height.
34 This is the level of the levee protection for Winfield.
33 Route N is closed from Highway 79 at Winfield to where state maintenance ends.
32.5 Near this level, Winfield Lock 25 is closed to navigation.
30 The Golden Eagle Ferry will likely close near this level. Lakeshore Drive in northern St. Charles County becomes impassable near this level.
29.8 Much of County Highways B and C in eastern St. Charles County are flooded.
29.5 Highway B in eastern St. Charles County floods near the Dardenne Creek bridge.
29.3 The following roads in northern St. Charles County close near this level: Peruque Creek Road near Highway 79, Dalbow Road near Highway 79, and Firma Road.
29.2 Lakeview Road in northeastern St. Charles County is closed north of the railroad tracks. Also, Highway C between Highway B and Silvers Road will be closed near this height.
29 Route 96 at Mozier Landing closes.
28.6 Water begins covering Highway C about a half mile south of Highway B in St. Charles County.
28.3 Near this height, Lakeview Drive becomes impassable and Kampville Road begins flooding in northern St. Charles County.
27.8 Near this height, Wilson Road just north of Washeon Road and Lehmond Island Road south of Sunset Drive in northern St. Charles County begin flooding.
27.5 At this stage, Lock and Dam 25 will stockpile 200 tons of sand, 12,000 sandbags, and 10,000 square feet of polyethylene plastic as a precaution.
23 A few local islands begin to flood.
21.6 Near this stage, the Corps will raise all gates out of the river, creating "open river" conditions. This corresponds to an approximate discharge of 145,000 cfs.
Photos
(1) Winfield levee breaks on June 27, 2008 at a Winfield stage of about 37 feet.
(2) Farm property south of Winfield and east of Hwy 79 on June 22, 2008 at a stage of 36.0 ft.
(3) Farm property east of 79 between Winfield and Old Monroe with a Winfield stage of 36.0 ft.
(4) Farmhouse between Winfield and Old Monroe east of Hwy 79 with a Winfield stage of 36.0 ft.
(5) Cropland flooding east of Winfield on June 22, 2008 at a stage of 36.0 ft.
(6) Sand and gravel company on Highway 79 between Old Monroe and Winfield on 6/22/2008 at 36.0 ft.
(7) Intersection of Dalbow Rd., Peruque Creek Rd., and Firma Rd. on March 29, 2010 at 29.8 feet.
(8) Dalbow Road flooding about 4 miles east of Hwy 79 on March 29, 2010 and a Winfield stage of 29.8 ft.
(9) Dalbow Road less than a mile east of Hwy 79 on March 29, 2010 at a Winfield stage of 29.8 ft.
(10) Peruque Creek Road on March 29, 2010 at a Winfield stage of 29.8 feet.
(11) Highway C looking north on March 30, 2010 at a Winfield stage of 29.6 ft.
(12) Aerial View looking upstream toward Missouri side
(13) Pool gage
(14) Tailwater gage
(15) Looking downstream from the lock
(16) Looking upstream at the gates
About This Location Collapse

Latitude: 39.000833° N, Longitude: 90.687500° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 26 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 406.48 ft 432.48 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 407.00 ft 433.00 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:
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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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