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Hydrograph River at a Glance Download
Mississippi River at Clarksville Lock and Dam 24 Tailwater (ft)Flow (kcfs)Observed: 13.88 ft at 11:00AM Mar 23, 2024Observed: 13.83 ft at 11:30AM Mar 23, 2024Observed: 13.85 ft at 12:00PM Mar 23, 2024Observed: 13.85 ft at 12:30PM Mar 23, 2024Observed: 13.85 ft at 1:00PM Mar 23, 2024Observed: 13.85 ft at 1:30PM Mar 23, 2024Observed: 13.87 ft at 2:00PM Mar 23, 2024Observed: 13.88 ft at 2:30PM Mar 23, 2024Observed: 13.85 ft at 3:00PM Mar 23, 2024Observed: 13.87 ft at 3:30PM Mar 23, 2024Observed: 13.88 ft at 4:00PM Mar 23, 2024Observed: 13.89 ft at 4:30PM Mar 23, 2024Observed: 13.9 ft at 5:00PM Mar 23, 2024Observed: 13.87 ft at 5:30PM Mar 23, 2024Observed: 13.85 ft at 6:00PM Mar 23, 2024Observed: 13.95 ft at 6:30PM Mar 23, 2024Observed: 13.89 ft at 7:00PM Mar 23, 2024Observed: 13.91 ft at 7:30PM Mar 23, 2024Observed: 13.91 ft at 8:00PM Mar 23, 2024Observed: 13.81 ft at 8:30PM Mar 23, 2024Observed: 13.91 ft at 9:00PM Mar 23, 2024Observed: 13.92 ft at 9:30PM Mar 23, 2024Observed: 13.93 ft at 10:00PM Mar 23, 2024Observed: 13.93 ft at 10:30PM Mar 23, 2024Observed: 13.95 ft at 11:00PM Mar 23, 2024Observed: 13.95 ft at 11:30PM Mar 23, 2024Observed: 13.96 ft at 12:00AM Mar 24, 2024Observed: 13.98 ft at 12:30AM Mar 24, 2024Observed: 13.99 ft at 1:00AM Mar 24, 2024Observed: 14 ft at 1:30AM Mar 24, 2024Observed: 14 ft at 2:00AM Mar 24, 2024Observed: 14.05 ft at 2:30AM Mar 24, 2024Observed: 14.03 ft at 3:00AM Mar 24, 2024Observed: 14.05 ft at 3:30AM Mar 24, 2024Observed: 14.06 ft at 4:00AM Mar 24, 2024Observed: 14.07 ft at 4:30AM Mar 24, 2024Observed: 14.05 ft at 5:00AM Mar 24, 2024Observed: 14.05 ft at 5:30AM Mar 24, 2024Observed: 14.05 ft at 6:00AM Mar 24, 2024Observed: 14.04 ft at 6:30AM Mar 24, 2024Observed: 14.11 ft at 7:00AM Mar 24, 2024Observed: 14.05 ft at 7:30AM Mar 24, 2024Observed: 14.09 ft at 8:00AM Mar 24, 2024Observed: 14.11 ft at 8:30AM Mar 24, 2024Observed: 14.11 ft at 9:00AM Mar 24, 2024Observed: 14.13 ft at 9:30AM Mar 24, 2024Observed: 14.15 ft at 10:00AM Mar 24, 2024Observed: 14.17 ft at 10:30AM Mar 24, 2024Observed: 14.17 ft at 11:00AM Mar 24, 2024Observed: 14.17 ft at 11:30AM Mar 24, 2024Observed: 14.18 ft at 12:00PM Mar 24, 2024Observed: 14.18 ft at 12:30PM Mar 24, 2024Observed: 14.19 ft at 1:00PM Mar 24, 2024Observed: 14.24 ft at 1:30PM Mar 24, 2024Observed: 14.21 ft at 2:00PM Mar 24, 2024Observed: 14.2 ft at 2:30PM Mar 24, 2024Observed: 14.03 ft at 3:00PM Mar 24, 2024Observed: 14.01 ft at 3:30PM Mar 24, 2024Observed: 13.9 ft at 4:00PM Mar 24, 2024Observed: 13.92 ft at 4:30PM Mar 24, 2024Observed: 13.87 ft at 5:00PM Mar 24, 2024Observed: 13.85 ft at 5:30PM Mar 24, 2024Observed: 13.83 ft at 6:00PM Mar 24, 2024Observed: 13.81 ft at 6:30PM Mar 24, 2024Observed: 13.8 ft at 7:00PM Mar 24, 2024Observed: 13.77 ft at 7:30PM Mar 24, 2024Observed: 13.78 ft at 8:00PM Mar 24, 2024Observed: 13.75 ft at 8:30PM Mar 24, 2024Observed: 13.79 ft at 9:00PM Mar 24, 2024Observed: 13.81 ft at 9:30PM Mar 24, 2024Observed: 13.81 ft at 10:00PM Mar 24, 2024Observed: 13.81 ft at 10:30PM Mar 24, 2024Observed: 13.81 ft at 11:00PM Mar 24, 2024Observed: 13.82 ft at 11:30PM Mar 24, 2024Observed: 13.84 ft at 12:00AM Mar 25, 2024Observed: 13.86 ft at 12:30AM Mar 25, 2024Observed: 13.87 ft at 1:00AM Mar 25, 2024Observed: 13.87 ft at 1:30AM Mar 25, 2024Observed: 13.87 ft at 2:00AM Mar 25, 2024Observed: 13.87 ft at 2:30AM Mar 25, 2024Observed: 13.85 ft at 3:00AM Mar 25, 2024Observed: 13.85 ft at 3:30AM Mar 25, 2024Observed: 13.83 ft at 4:00AM Mar 25, 2024Observed: 13.81 ft at 4:30AM Mar 25, 2024Observed: 13.81 ft at 5:00AM Mar 25, 2024Observed: 13.86 ft at 5:30AM Mar 25, 2024Observed: 13.9 ft at 6:00AM Mar 25, 2024Observed: 13.92 ft at 6:30AM Mar 25, 2024Observed: 13.9 ft at 7:00AM Mar 25, 2024Observed: 13.92 ft at 7:30AM Mar 25, 2024Observed: 13.94 ft at 8:00AM Mar 25, 2024Observed: 13.96 ft at 8:30AM Mar 25, 2024Observed: 13.99 ft at 9:00AM Mar 25, 2024Observed: 14.03 ft at 9:30AM Mar 25, 2024Observed: 13.95 ft at 10:00AM Mar 25, 2024Observed: 13.89 ft at 10:30AM Mar 25, 2024Observed: 14.04 ft at 11:00AM Mar 25, 2024Observed: 14.01 ft at 11:30AM Mar 25, 2024Observed: 14.01 ft at 12:00PM Mar 25, 2024Observed: 13.99 ft at 12:30PM Mar 25, 2024Observed: 13.99 ft at 1:00PM Mar 25, 2024Observed: 13.99 ft at 1:30PM Mar 25, 2024Observed: 13.99 ft at 2:00PM Mar 25, 2024Observed: 14 ft at 2:30PM Mar 25, 2024Observed: 13.98 ft at 3:00PM Mar 25, 2024Observed: 13.95 ft at 3:30PM Mar 25, 2024Observed: 14 ft at 4:00PM Mar 25, 2024Observed: 14.06 ft at 4:30PM Mar 25, 2024Observed: 14.01 ft at 5:00PM Mar 25, 2024Observed: 14.04 ft at 5:30PM Mar 25, 2024Observed: 14.14 ft at 6:00PM Mar 25, 2024Observed: 14.16 ft at 6:30PM Mar 25, 2024Observed: 14.11 ft at 7:00PM Mar 25, 2024Observed: 14.29 ft at 7:30PM Mar 25, 2024Observed: 14.35 ft at 8:00PM Mar 25, 2024Observed: 14.39 ft at 8:30PM Mar 25, 2024Observed: 14.42 ft at 9:00PM Mar 25, 2024Observed: 14.47 ft at 9:30PM Mar 25, 2024Observed: 14.52 ft at 10:00PM Mar 25, 2024Observed: 14.53 ft at 10:30PM Mar 25, 2024Observed: 14.52 ft at 11:00PM Mar 25, 2024Observed: 14.55 ft at 11:30PM Mar 25, 2024Observed: 14.57 ft at 12:00AM Mar 26, 2024Observed: 14.58 ft at 12:30AM Mar 26, 2024Observed: 14.65 ft at 1:00AM Mar 26, 2024Observed: 14.63 ft at 1:30AM Mar 26, 2024Observed: 14.67 ft at 2:00AM Mar 26, 2024Highest Observation: 14.71 ft at 2:30AM Mar 26, 2024Observed: 14.7 ft at 3:00AM Mar 26, 2024Observed: 14.7 ft at 3:30AM Mar 26, 2024Highest Observation: 14.71 ft at 4:00AM Mar 26, 2024Observed: 14.69 ft at 4:30AM Mar 26, 2024Observed: 14.69 ft at 5:00AM Mar 26, 2024Observed: 14.6 ft at 5:30AM Mar 26, 2024Observed: 14.56 ft at 6:00AM Mar 26, 2024Observed: 14.54 ft at 6:30AM Mar 26, 2024Observed: 14.54 ft at 7:00AM Mar 26, 2024Observed: 14.5 ft at 7:30AM Mar 26, 2024Observed: 14.49 ft at 8:00AM Mar 26, 2024Observed: 14.34 ft at 8:30AM Mar 26, 2024Observed: 14.29 ft at 9:00AM Mar 26, 2024Observed: 14.25 ft at 9:30AM Mar 26, 2024Observed: 14.23 ft at 10:00AM Mar 26, 2024Observed: 14.2 ft at 10:30AM Mar 26, 2024Observed: 14.17 ft at 11:00AM Mar 26, 2024Observed: 14.15 ft at 11:30AM Mar 26, 2024Observed: 14.15 ft at 12:00PM Mar 26, 2024Observed: 14.15 ft at 12:30PM Mar 26, 2024Observed: 14.25 ft at 1:00PM Mar 26, 2024Observed: 14.28 ft at 1:30PM Mar 26, 2024Observed: 14.3 ft at 2:00PM Mar 26, 2024Observed: 14.31 ft at 2:30PM Mar 26, 2024Observed: 14.31 ft at 3:00PM Mar 26, 2024Observed: 14.31 ft at 3:30PM Mar 26, 2024Observed: 14.31 ft at 4:00PM Mar 26, 2024Observed: 14.28 ft at 4:30PM Mar 26, 2024Observed: 14.29 ft at 5:00PM Mar 26, 2024Observed: 14.27 ft at 5:30PM Mar 26, 2024Observed: 14.28 ft at 6:00PM Mar 26, 2024Observed: 14.28 ft at 6:30PM Mar 26, 2024Observed: 14.29 ft at 7:00PM Mar 26, 2024Observed: 14.28 ft at 7:30PM Mar 26, 2024Observed: 14.28 ft at 8:00PM Mar 26, 2024Observed: 14.27 ft at 8:30PM Mar 26, 2024Observed: 14.28 ft at 9:00PM Mar 26, 2024Observed: 14.28 ft at 9:30PM Mar 26, 2024Observed: 14.28 ft at 10:00PM Mar 26, 2024Observed: 14.29 ft at 10:30PM Mar 26, 2024Observed: 14.27 ft at 11:00PM Mar 26, 2024Observed: 14.27 ft at 11:30PM Mar 26, 2024Observed: 14.3 ft at 12:00AM Mar 27, 2024Observed: 14.28 ft at 12:30AM Mar 27, 2024Observed: 14.26 ft at 1:00AM Mar 27, 2024Observed: 14.28 ft at 1:30AM Mar 27, 2024Observed: 14.26 ft at 2:00AM Mar 27, 2024Observed: 14.26 ft at 2:30AM Mar 27, 2024Observed: 14.25 ft at 3:00AM Mar 27, 2024Observed: 14.27 ft at 3:30AM Mar 27, 2024Observed: 14.27 ft at 4:00AM Mar 27, 2024Observed: 14.29 ft at 4:30AM Mar 27, 2024Observed: 14.26 ft at 5:00AM Mar 27, 2024Observed: 14.2 ft at 5:30AM Mar 27, 2024Observed: 14.18 ft at 6:00AM Mar 27, 2024Observed: 14.17 ft at 6:30AM Mar 27, 2024Observed: 14.2 ft at 7:00AM Mar 27, 2024Observed: 14.19 ft at 7:30AM Mar 27, 2024Observed: 14.2 ft at 8:00AM Mar 27, 2024Observed: 14.05 ft at 8:30AM Mar 27, 2024Observed: 14.07 ft at 9:00AM Mar 27, 2024Observed: 14.19 ft at 9:30AM Mar 27, 2024Observed: 14.1 ft at 10:00AM Mar 27, 2024Observed: 14.09 ft at 10:30AM Mar 27, 2024Observed: 14.09 ft at 11:00AM Mar 27, 2024Observed: 14.14 ft at 11:30AM Mar 27, 2024Observed: 14.15 ft at 12:00PM Mar 27, 2024Observed: 14.12 ft at 12:30PM Mar 27, 2024Observed: 14.11 ft at 1:00PM Mar 27, 2024Observed: 14.11 ft at 1:30PM Mar 27, 2024Observed: 14.15 ft at 2:00PM Mar 27, 2024Observed: 14.17 ft at 2:30PM Mar 27, 2024Observed: 14.16 ft at 3:00PM Mar 27, 2024Observed: 14.14 ft at 3:30PM Mar 27, 2024Observed: 14.08 ft at 4:00PM Mar 27, 2024Observed: 14.13 ft at 4:30PM Mar 27, 2024Observed: 14.16 ft at 5:00PM Mar 27, 2024Observed: 14.13 ft at 5:30PM Mar 27, 2024Observed: 14.12 ft at 6:00PM Mar 27, 2024Observed: 14.13 ft at 6:30PM Mar 27, 2024Observed: 14.14 ft at 7:00PM Mar 27, 2024Observed: 14.15 ft at 7:30PM Mar 27, 2024Observed: 14.15 ft at 8:00PM Mar 27, 2024Observed: 14.16 ft at 8:30PM Mar 27, 2024Observed: 14.17 ft at 9:00PM Mar 27, 2024Observed: 14.17 ft at 9:30PM Mar 27, 2024Observed: 14.15 ft at 10:00PM Mar 27, 2024Observed: 14.15 ft at 10:30PM Mar 27, 2024Observed: 14.2 ft at 11:00PM Mar 27, 2024Observed: 14.18 ft at 11:30PM Mar 27, 2024Observed: 14.19 ft at 12:00AM Mar 28, 2024Observed: 14.19 ft at 12:30AM Mar 28, 2024Observed: 14.18 ft at 1:00AM Mar 28, 2024Observed: 14.17 ft at 1:30AM Mar 28, 2024Observed: 14.17 ft at 2:00AM Mar 28, 2024Observed: 14.18 ft at 2:30AM Mar 28, 2024Observed: 14.17 ft at 3:00AM Mar 28, 2024Observed: 14.17 ft at 3:30AM Mar 28, 2024Observed: 14.16 ft at 4:00AM Mar 28, 2024Observed: 14.15 ft at 4:30AM Mar 28, 2024Observed: 14.17 ft at 5:00AM Mar 28, 2024Observed: 14.17 ft at 5:30AM Mar 28, 2024Observed: 14.17 ft at 6:00AM Mar 28, 2024Observed: 14.19 ft at 6:30AM Mar 28, 2024Observed: 14.17 ft at 7:00AM Mar 28, 2024Observed: 14.17 ft at 7:30AM Mar 28, 2024Observed: 14.19 ft at 8:00AM Mar 28, 2024Observed: 14.18 ft at 8:30AM Mar 28, 2024Observed: 14.19 ft at 9:00AM Mar 28, 2024Observed: 14.19 ft at 9:30AM Mar 28, 2024Observed: 14.19 ft at 10:00AM Mar 28, 2024Forecast: 14.2 ft 1:00PM Mar 28, 2024Forecast: 14.2 ft 7:00PM Mar 28, 2024Forecast: 14.2 ft 1:00AM Mar 29, 2024Forecast: 14.2 ft 7:00AM Mar 29, 2024Forecast: 14.2 ft 1:00PM Mar 29, 2024Forecast: 14.2 ft 7:00PM Mar 29, 2024Forecast: 14.3 ft 1:00AM Mar 30, 2024Forecast: 14.3 ft 7:00AM Mar 30, 2024Forecast: 14.4 ft 1:00PM Mar 30, 2024Forecast: 14.5 ft 7:00PM Mar 30, 2024Forecast: 14.6 ft 1:00AM Mar 31, 2024Forecast: 14.7 ft 7:00AM Mar 31, 2024Forecast: 14.8 ft 1:00PM Mar 31, 2024Forecast: 14.9 ft 7:00PM Mar 31, 2024Forecast: 15 ft 1:00AM Apr 01, 2024Forecast: 15.2 ft 7:00AM Apr 01, 2024Forecast: 15.3 ft 1:00PM Apr 01, 2024Forecast: 15.5 ft 7:00PM Apr 01, 2024Forecast: 15.7 ft 1:00AM Apr 02, 2024Forecast: 15.8 ft 7:00AM Apr 02, 2024Forecast: 16 ft 1:00PM Apr 02, 2024Forecast: 16.1 ft 7:00PM Apr 02, 2024Forecast: 16.2 ft 1:00AM Apr 03, 2024Forecast: 16.3 ft 7:00AM Apr 03, 2024Forecast: 16.4 ft 1:00PM Apr 03, 2024Forecast: 16.4 ft 7:00PM Apr 03, 2024Forecast: 16.5 ft 1:00AM Apr 04, 2024Forecast: 16.5 ft 7:00AM Apr 04, 2024Forecast: 16.5 ft 1:00PM Apr 04, 2024Forecast: 16.6 ft 7:00PM Apr 04, 2024Forecast: 16.6 ft 1:00AM Apr 05, 2024Forecast: 16.6 ft 7:00AM Apr 05, 2024Forecast: 16.7 ft 1:00PM Apr 05, 2024Forecast: 16.7 ft 7:00PM Apr 05, 2024Forecast: 16.8 ft 1:00AM Apr 06, 2024Forecast: 16.9 ft 7:00AM Apr 06, 2024Forecast: 16.9 ft 1:00PM Apr 06, 2024Forecast: 16.9 ft 7:00PM Apr 06, 2024Forecast: 16.9 ft 1:00AM Apr 07, 2024Forecast: 16.9 ft 7:00AM Apr 07, 2024Forecast: 16.9 ft 1:00PM Apr 07, 2024Forecast: 16.9 ft 7:00PM Apr 07, 2024Forecast: 16.9 ft 1:00AM Apr 08, 2024Forecast: 17 ft 7:00AM Apr 08, 2024Forecast: 17 ft 1:00PM Apr 08, 2024Forecast: 17 ft 7:00PM Apr 08, 2024Forecast: 17 ft 1:00AM Apr 09, 2024Forecast: 17 ft 7:00AM Apr 09, 2024Forecast: 17 ft 1:00PM Apr 09, 2024Highest Forecast: 17.1 ft 7:00PM Apr 09, 2024Highest Forecast: 17.1 ft 1:00AM Apr 10, 2024Forecast: 17 ft 7:00AM Apr 10, 2024Forecast: 17 ft 1:00PM Apr 10, 2024Forecast: 17 ft 7:00PM Apr 10, 2024Forecast: 17 ft 1:00AM Apr 11, 2024Forecast: 17 ft 7:00AM Apr 11, 2024CLKM7(plotting HTIRG) Graph Created (10:41AM Mar 28, 2024)ObservedForecast (issued 10:13AM Mar 28)Latest observed value: 14.19 ft at 10:00 AM CDT 28-Mar-2024. Flood Stage is 25 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 48 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 Clarksville Lock and Dam 24 are issued routinely year-round.

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Upstream Gauge - at Louisiana Upstream Gauge Downstream Gauge Downstream Gauge - at Mozier Landing
Flood Categories (in feet)
Major Flood Stage: 33
Moderate Flood Stage: 31
Flood Stage: 25
Action Stage: 23
Low Stage (in feet): -9999

Historic Crests
(1) 37.73 ft on 07/29/1993
(2) 37.11 ft on 06/02/2019
(3) 36.76 ft on 04/24/1973
(4) 36.70 ft on 06/24/2008
(5) 35.30 ft on 04/22/2013
(6) 34.78 ft on 07/09/2014
(7) 34.70 ft on 05/16/2001
(8) 33.70 ft on 10/05/1986
(9) 33.24 ft on 04/06/1983
(10) 33.13 ft on 10/13/2018
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 30.26 ft on 05/06/2023
(2) 27.78 ft on 04/13/2021
(3) 27.22 ft on 03/19/2021
(4) 27.29 ft on 07/01/2020
(5) 27.57 ft on 06/12/2020
(6) 25.43 ft on 05/18/2020
(7) 29.12 ft on 04/03/2020
(8) 29.29 ft on 10/19/2019
(9) 37.11 ft on 06/02/2019
(10) 25.07 ft on 12/05/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 9.50 ft on 02/26/1950
(2) 9.95 ft on 01/28/1944
(3) 10.34 ft on 02/25/1965
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
153000 This flow is approximately where CLKM7 goes to "open river" conditions.
38.1 Sny Island Cell #4 levee is overtopped.
37.1 Sny Island Cell #3 levee is overtopped.
36.25 Highway 79 is closed from one mile south of Annada to two miles north of Annada. Route H is closed from Annada to about one mile west of Annada.
36 Near this height, the top of the sewage treatment lagoon just south of town is overtopped.
35 Near this height, the lock wall at Lock 24 is inundated.
34 Route W (Kentucky Street) is closed for one block between Third Street and Highway 79. Also, near this height, the living areas of homes in the Port Marmac area begin flooding.
33 Clarksville city businesses from 1st Street to 3rd Street begin to flood.
32.79 IL route 96 from near Mozier to County Road 2 inundated and closed near this height.
32.5 Near this level, the lock is closed to navigation.
32.29 Route N is closed between Route D and Highway 79.
32 Front Street begins to flood.
31.5 Burlington Northern SF railroad tracks begin to flood. Also, Highway 79 is closed about a mile south of Clarksville.
31 The Clarksville Boat Club, south of Lock & Dam 24, begins to flood. First Street begins flooding. A sand-filled barrier at the bottom of Howard Street is considered. In Hamburg, Illinois, Water Street floods.
30.8 Near this height, Highway 79 is closed from Route N to about a mile northwest of that intersection.
30 East bank (Illinois side) begins to flood.
29 Water enters the parking lot entrance at the Clarksville Riverfront Park.
27.2 Silo Park just northwest of Clarksville off Highway 79 begins flooding.
25.5 State Route P east of Elsberry begins flooding just east of the levee.
25.3 The road to Port Marmac, a riverside community of about 15 homes just south of Clarksville, begins flooding.
23.5 Flooding begins in unprotected areas.
23 At this approximate stage, the Corps will take gates out of the river, creating "open river" conditions. This corresponds to an approximate stage of 155,000 cfs.
Photos
(1) Lock and Dam tailwater instruments on June 22, 2010 at a stage of 36.5 feet.
(2) Lock and Dam 24 control center on June 22, 2008 at a stage of 36.5 feet.
(3) Clarksville riverfront on 22 June 2008 at 36.5 feet.
(4) Tennessee Street near 3rd Street on 22 June 2008 with a stage of 36.5 feet.
(5) Kentuckty Street near Highway 79 with a stage of 36.5 feet on 22 June 2008.
(6) Tennessee and 3rd Streets on 22 June 2008 with a stage of 36.5 feet.
(7) Clarksville along Highway 79 (2nd Street) on 22 June 2008 with a stage of 36.5 feet.
(8) Along Wilber Street at 3rd Street with a stage of 36.5 feet on 22 June 2008.
(9) Intersection of Highway 79 and W on May 17, 2001 at 34.5 feet.
(10) Along Wilber Street on 22 June 2008 at a stage of 36.5 feet.
(11) Main Street at 1st Street on May 17, 2001 at a stage of 34.4 ft.
(12) Howard Street on May 17, 2001 at a stage of 34.5 feet.
(13) Highway 79 about 1.6 miles south of Clarksville on June 25, 2010 at 31.34 ft.
(14) Clarksville Boat House flooding on June 25, 2010 at a stage of 31.34 feet.
(15) 1st Street in Clarksville on June 25, 2010 at a stage of 31.34 feet.
(16) Parking area at the Clarksville Riverfront Park on June 25, 2010 at a stage of 31.34 feet.
(17) Highway P near Elsberry on May 19, 2009 at 29.8 ft.
(18) Aerial View
About This Location Collapse

Latitude: 39.373333° N, Longitude: 90.904722° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 25 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 421.59 ft 446.59 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 421.81 ft 446.81 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
Additional Information Collapse
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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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