Skip Navigation Link weather.gov  
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
Bookmark and Share Navigation Bar End Cap

  
 
Hydrograph River at a Glance Download
Mississippi River at Clarksville Lock and Dam 24 Tailwater (ft)Flow (kcfs)Highest Observation: 18.87 ft at 4:00AM Aug 26, 2014Observed: 18.84 ft at 4:30AM Aug 26, 2014Observed: 18.85 ft at 5:00AM Aug 26, 2014Observed: 18.83 ft at 5:30AM Aug 26, 2014Observed: 18.83 ft at 6:00AM Aug 26, 2014Observed: 18.8 ft at 6:30AM Aug 26, 2014Observed: 18.78 ft at 7:00AM Aug 26, 2014Observed: 18.7 ft at 7:30AM Aug 26, 2014Observed: 18.6 ft at 8:00AM Aug 26, 2014Observed: 18.55 ft at 8:30AM Aug 26, 2014Observed: 18.54 ft at 9:00AM Aug 26, 2014Observed: 18.51 ft at 9:30AM Aug 26, 2014Observed: 18.52 ft at 10:00AM Aug 26, 2014Observed: 18.49 ft at 10:30AM Aug 26, 2014Observed: 18.48 ft at 11:00AM Aug 26, 2014Observed: 18.47 ft at 11:30AM Aug 26, 2014Observed: 18.49 ft at 12:00PM Aug 26, 2014Observed: 18.51 ft at 12:30PM Aug 26, 2014Observed: 18.47 ft at 1:00PM Aug 26, 2014Observed: 18.49 ft at 1:30PM Aug 26, 2014Observed: 18.43 ft at 2:00PM Aug 26, 2014Observed: 18.45 ft at 2:30PM Aug 26, 2014Observed: 18.43 ft at 3:00PM Aug 26, 2014Observed: 18.2 ft at 3:30PM Aug 26, 2014Observed: 18.01 ft at 4:00PM Aug 26, 2014Observed: 17.93 ft at 4:30PM Aug 26, 2014Observed: 17.88 ft at 5:00PM Aug 26, 2014Observed: 17.85 ft at 5:30PM Aug 26, 2014Observed: 17.83 ft at 6:00PM Aug 26, 2014Observed: 17.83 ft at 6:30PM Aug 26, 2014Observed: 17.79 ft at 7:00PM Aug 26, 2014Observed: 17.75 ft at 7:30PM Aug 26, 2014Observed: 17.77 ft at 8:00PM Aug 26, 2014Observed: 17.76 ft at 8:30PM Aug 26, 2014Observed: 17.75 ft at 9:00PM Aug 26, 2014Observed: 17.73 ft at 9:30PM Aug 26, 2014Observed: 17.73 ft at 10:00PM Aug 26, 2014Observed: 17.72 ft at 10:30PM Aug 26, 2014Observed: 17.7 ft at 11:00PM Aug 26, 2014Observed: 17.66 ft at 11:30PM Aug 26, 2014Observed: 17.63 ft at 12:00AM Aug 27, 2014Observed: 17.65 ft at 12:30AM Aug 27, 2014Observed: 17.67 ft at 1:00AM Aug 27, 2014Observed: 17.65 ft at 1:30AM Aug 27, 2014Observed: 17.63 ft at 2:00AM Aug 27, 2014Observed: 17.61 ft at 2:30AM Aug 27, 2014Observed: 17.56 ft at 3:00AM Aug 27, 2014Observed: 17.62 ft at 3:30AM Aug 27, 2014Observed: 17.67 ft at 4:00AM Aug 27, 2014Observed: 17.61 ft at 4:30AM Aug 27, 2014Observed: 17.67 ft at 5:00AM Aug 27, 2014Observed: 17.61 ft at 5:30AM Aug 27, 2014Observed: 17.6 ft at 6:00AM Aug 27, 2014Observed: 17.61 ft at 6:30AM Aug 27, 2014Observed: 17.6 ft at 7:00AM Aug 27, 2014Observed: 17.61 ft at 7:30AM Aug 27, 2014Observed: 17.61 ft at 8:00AM Aug 27, 2014Observed: 17.64 ft at 8:30AM Aug 27, 2014Observed: 17.63 ft at 9:00AM Aug 27, 2014Observed: 17.64 ft at 9:30AM Aug 27, 2014Observed: 17.64 ft at 10:00AM Aug 27, 2014Observed: 17.64 ft at 10:30AM Aug 27, 2014Observed: 17.65 ft at 11:00AM Aug 27, 2014Observed: 17.65 ft at 11:30AM Aug 27, 2014Observed: 17.64 ft at 12:00PM Aug 27, 2014Observed: 17.65 ft at 12:30PM Aug 27, 2014Observed: 17.62 ft at 1:00PM Aug 27, 2014Observed: 17.59 ft at 1:30PM Aug 27, 2014Observed: 17.61 ft at 2:00PM Aug 27, 2014Observed: 17.67 ft at 2:30PM Aug 27, 2014Observed: 17.69 ft at 3:00PM Aug 27, 2014Observed: 17.69 ft at 3:30PM Aug 27, 2014Observed: 17.7 ft at 4:00PM Aug 27, 2014Observed: 17.7 ft at 4:30PM Aug 27, 2014Observed: 17.73 ft at 5:00PM Aug 27, 2014Observed: 17.71 ft at 5:30PM Aug 27, 2014Observed: 17.71 ft at 6:00PM Aug 27, 2014Observed: 17.71 ft at 6:30PM Aug 27, 2014Observed: 17.74 ft at 7:00PM Aug 27, 2014Observed: 17.75 ft at 7:30PM Aug 27, 2014Observed: 17.73 ft at 8:00PM Aug 27, 2014Observed: 17.75 ft at 8:30PM Aug 27, 2014Observed: 17.74 ft at 9:00PM Aug 27, 2014Observed: 17.75 ft at 9:30PM Aug 27, 2014Observed: 17.75 ft at 10:00PM Aug 27, 2014Observed: 17.75 ft at 10:30PM Aug 27, 2014Observed: 17.75 ft at 11:00PM Aug 27, 2014Observed: 17.75 ft at 11:30PM Aug 27, 2014Observed: 17.78 ft at 12:00AM Aug 28, 2014Observed: 17.77 ft at 12:30AM Aug 28, 2014Observed: 17.78 ft at 1:00AM Aug 28, 2014Observed: 17.78 ft at 1:30AM Aug 28, 2014Observed: 17.75 ft at 2:00AM Aug 28, 2014Observed: 17.75 ft at 2:30AM Aug 28, 2014Observed: 17.78 ft at 3:00AM Aug 28, 2014Observed: 17.79 ft at 3:30AM Aug 28, 2014Observed: 17.8 ft at 4:00AM Aug 28, 2014Observed: 17.77 ft at 4:30AM Aug 28, 2014Observed: 17.8 ft at 5:00AM Aug 28, 2014Observed: 17.77 ft at 5:30AM Aug 28, 2014Observed: 17.77 ft at 6:00AM Aug 28, 2014Observed: 17.77 ft at 6:30AM Aug 28, 2014Observed: 17.77 ft at 7:00AM Aug 28, 2014Observed: 17.76 ft at 7:30AM Aug 28, 2014Observed: 17.77 ft at 8:00AM Aug 28, 2014Observed: 17.77 ft at 8:30AM Aug 28, 2014Observed: 17.79 ft at 9:00AM Aug 28, 2014Observed: 17.78 ft at 9:30AM Aug 28, 2014Observed: 17.78 ft at 10:00AM Aug 28, 2014Observed: 17.79 ft at 10:30AM Aug 28, 2014Observed: 17.79 ft at 11:00AM Aug 28, 2014Observed: 17.79 ft at 11:30AM Aug 28, 2014Observed: 17.79 ft at 12:00PM Aug 28, 2014Observed: 17.79 ft at 12:30PM Aug 28, 2014Observed: 17.79 ft at 1:00PM Aug 28, 2014Observed: 17.78 ft at 1:30PM Aug 28, 2014Observed: 17.73 ft at 2:00PM Aug 28, 2014Observed: 17.79 ft at 2:30PM Aug 28, 2014Observed: 17.82 ft at 3:00PM Aug 28, 2014Observed: 17.8 ft at 3:30PM Aug 28, 2014Observed: 17.81 ft at 4:00PM Aug 28, 2014Observed: 17.8 ft at 4:30PM Aug 28, 2014Observed: 17.8 ft at 5:00PM Aug 28, 2014Observed: 17.85 ft at 5:30PM Aug 28, 2014Observed: 17.83 ft at 6:00PM Aug 28, 2014Observed: 17.81 ft at 6:30PM Aug 28, 2014Observed: 17.79 ft at 7:00PM Aug 28, 2014Observed: 17.82 ft at 7:30PM Aug 28, 2014Observed: 17.81 ft at 8:00PM Aug 28, 2014Observed: 17.82 ft at 8:30PM Aug 28, 2014Observed: 17.81 ft at 9:00PM Aug 28, 2014Observed: 17.81 ft at 9:30PM Aug 28, 2014Observed: 17.82 ft at 10:00PM Aug 28, 2014Observed: 17.81 ft at 10:30PM Aug 28, 2014Observed: 17.82 ft at 11:00PM Aug 28, 2014Observed: 17.83 ft at 11:30PM Aug 28, 2014Observed: 17.83 ft at 12:00AM Aug 29, 2014Observed: 17.85 ft at 12:30AM Aug 29, 2014Observed: 17.85 ft at 1:00AM Aug 29, 2014Observed: 17.81 ft at 1:30AM Aug 29, 2014Observed: 17.83 ft at 2:00AM Aug 29, 2014Observed: 17.83 ft at 2:30AM Aug 29, 2014Observed: 17.84 ft at 3:00AM Aug 29, 2014Observed: 17.79 ft at 3:30AM Aug 29, 2014Observed: 17.81 ft at 4:00AM Aug 29, 2014Observed: 17.78 ft at 4:30AM Aug 29, 2014Observed: 17.83 ft at 5:00AM Aug 29, 2014Observed: 17.83 ft at 5:30AM Aug 29, 2014Observed: 17.81 ft at 6:00AM Aug 29, 2014Observed: 17.8 ft at 6:30AM Aug 29, 2014Observed: 17.81 ft at 7:00AM Aug 29, 2014Observed: 17.81 ft at 7:30AM Aug 29, 2014Observed: 17.82 ft at 8:00AM Aug 29, 2014Observed: 17.82 ft at 8:30AM Aug 29, 2014Observed: 17.81 ft at 9:00AM Aug 29, 2014Observed: 17.81 ft at 9:30AM Aug 29, 2014Observed: 17.81 ft at 10:00AM Aug 29, 2014Observed: 17.82 ft at 10:30AM Aug 29, 2014Observed: 17.82 ft at 11:00AM Aug 29, 2014Observed: 17.83 ft at 11:30AM Aug 29, 2014Observed: 17.84 ft at 12:00PM Aug 29, 2014Observed: 17.86 ft at 12:30PM Aug 29, 2014Observed: 17.85 ft at 1:00PM Aug 29, 2014Observed: 17.85 ft at 1:30PM Aug 29, 2014Observed: 17.91 ft at 2:00PM Aug 29, 2014Observed: 17.91 ft at 2:30PM Aug 29, 2014Observed: 17.92 ft at 3:00PM Aug 29, 2014Observed: 17.92 ft at 3:30PM Aug 29, 2014Observed: 17.93 ft at 4:00PM Aug 29, 2014Observed: 17.95 ft at 4:30PM Aug 29, 2014Observed: 17.92 ft at 5:00PM Aug 29, 2014Observed: 17.95 ft at 5:30PM Aug 29, 2014Observed: 17.9 ft at 6:00PM Aug 29, 2014Observed: 17.99 ft at 6:30PM Aug 29, 2014Observed: 17.98 ft at 7:00PM Aug 29, 2014Observed: 18 ft at 7:30PM Aug 29, 2014Observed: 18.03 ft at 8:00PM Aug 29, 2014Observed: 18.02 ft at 8:30PM Aug 29, 2014Observed: 18.03 ft at 9:00PM Aug 29, 2014Observed: 18.04 ft at 9:30PM Aug 29, 2014Observed: 18.05 ft at 10:00PM Aug 29, 2014Observed: 18.08 ft at 10:30PM Aug 29, 2014Observed: 18.04 ft at 11:00PM Aug 29, 2014Observed: 18.06 ft at 11:30PM Aug 29, 2014Observed: 18.08 ft at 12:00AM Aug 30, 2014Observed: 18 ft at 12:30AM Aug 30, 2014Observed: 18.01 ft at 1:00AM Aug 30, 2014Observed: 18.03 ft at 1:30AM Aug 30, 2014Observed: 18.03 ft at 2:00AM Aug 30, 2014Observed: 18.03 ft at 2:30AM Aug 30, 2014Observed: 18.03 ft at 3:00AM Aug 30, 2014Observed: 18.03 ft at 3:30AM Aug 30, 2014Observed: 18.02 ft at 4:00AM Aug 30, 2014Observed: 18.03 ft at 4:30AM Aug 30, 2014Observed: 18.02 ft at 5:00AM Aug 30, 2014Observed: 18.02 ft at 5:30AM Aug 30, 2014Observed: 18.05 ft at 6:00AM Aug 30, 2014Observed: 18.02 ft at 6:30AM Aug 30, 2014Observed: 18.02 ft at 7:00AM Aug 30, 2014Observed: 18.02 ft at 7:30AM Aug 30, 2014Observed: 18.04 ft at 8:00AM Aug 30, 2014Observed: 18.03 ft at 8:30AM Aug 30, 2014Observed: 18.01 ft at 9:00AM Aug 30, 2014Observed: 18.01 ft at 9:30AM Aug 30, 2014Observed: 18.01 ft at 10:00AM Aug 30, 2014Observed: 18.04 ft at 10:30AM Aug 30, 2014Observed: 18.02 ft at 11:00AM Aug 30, 2014Observed: 18.03 ft at 11:30AM Aug 30, 2014Observed: 18.03 ft at 12:00PM Aug 30, 2014Observed: 18.03 ft at 12:30PM Aug 30, 2014Observed: 18.03 ft at 1:00PM Aug 30, 2014Observed: 18.07 ft at 1:30PM Aug 30, 2014Observed: 18.03 ft at 2:00PM Aug 30, 2014Observed: 18.04 ft at 2:30PM Aug 30, 2014Observed: 18.03 ft at 3:00PM Aug 30, 2014Observed: 18.03 ft at 3:30PM Aug 30, 2014Observed: 18.06 ft at 4:00PM Aug 30, 2014Observed: 18.07 ft at 4:30PM Aug 30, 2014Observed: 18.1 ft at 5:00PM Aug 30, 2014Observed: 18.13 ft at 5:30PM Aug 30, 2014Observed: 18.13 ft at 6:00PM Aug 30, 2014Observed: 18.12 ft at 6:30PM Aug 30, 2014Observed: 18.13 ft at 7:00PM Aug 30, 2014Observed: 18.13 ft at 7:30PM Aug 30, 2014Observed: 18.13 ft at 8:00PM Aug 30, 2014Observed: 18.13 ft at 8:30PM Aug 30, 2014Observed: 18.14 ft at 9:00PM Aug 30, 2014Observed: 18.15 ft at 9:30PM Aug 30, 2014Observed: 18.14 ft at 10:00PM Aug 30, 2014Observed: 18.08 ft at 10:30PM Aug 30, 2014Observed: 18.12 ft at 11:00PM Aug 30, 2014Observed: 18.12 ft at 11:30PM Aug 30, 2014Observed: 18.13 ft at 12:00AM Aug 31, 2014Observed: 18.13 ft at 12:30AM Aug 31, 2014Observed: 18.12 ft at 1:00AM Aug 31, 2014Observed: 18.13 ft at 1:30AM Aug 31, 2014Observed: 18.12 ft at 2:00AM Aug 31, 2014Observed: 18.12 ft at 2:30AM Aug 31, 2014Observed: 18.12 ft at 3:00AM Aug 31, 2014Highest Forecast: 18.3 ft 7:00AM Aug 31, 2014Highest Forecast: 18.3 ft 1:00PM Aug 31, 2014Highest Forecast: 18.3 ft 7:00PM Aug 31, 2014Forecast: 18.2 ft 1:00AM Sep 01, 2014Forecast: 18.2 ft 7:00AM Sep 01, 2014Forecast: 18.1 ft 1:00PM Sep 01, 2014Forecast: 18.1 ft 7:00PM Sep 01, 2014Forecast: 18.1 ft 1:00AM Sep 02, 2014Forecast: 18.1 ft 7:00AM Sep 02, 2014Forecast: 18.1 ft 1:00PM Sep 02, 2014Forecast: 18.1 ft 7:00PM Sep 02, 2014Forecast: 18.1 ft 1:00AM Sep 03, 2014Forecast: 18.1 ft 7:00AM Sep 03, 2014Forecast: 18.1 ft 1:00PM Sep 03, 2014Forecast: 18.1 ft 7:00PM Sep 03, 2014Forecast: 18.1 ft 1:00AM Sep 04, 2014Forecast: 18 ft 7:00AM Sep 04, 2014Forecast: 18 ft 1:00PM Sep 04, 2014Forecast: 18 ft 7:00PM Sep 04, 2014Forecast: 18 ft 1:00AM Sep 05, 2014Forecast: 18 ft 7:00AM Sep 05, 2014Forecast: 18 ft 1:00PM Sep 05, 2014Forecast: 17.9 ft 7:00PM Sep 05, 2014Forecast: 17.9 ft 1:00AM Sep 06, 2014Forecast: 17.8 ft 7:00AM Sep 06, 2014Forecast: 17.8 ft 1:00PM Sep 06, 2014Forecast: 17.8 ft 7:00PM Sep 06, 2014Forecast: 17.7 ft 1:00AM Sep 07, 2014Forecast: 17.7 ft 7:00AM Sep 07, 2014Forecast: 17.7 ft 1:00PM Sep 07, 2014Forecast: 17.6 ft 7:00PM Sep 07, 2014Forecast: 17.6 ft 1:00AM Sep 08, 2014Forecast: 17.6 ft 7:00AM Sep 08, 2014Forecast: 17.5 ft 1:00PM Sep 08, 2014Forecast: 17.5 ft 7:00PM Sep 08, 2014Forecast: 17.5 ft 1:00AM Sep 09, 2014Forecast: 17.4 ft 7:00AM Sep 09, 2014Forecast: 17.4 ft 1:00PM Sep 09, 2014Forecast: 17.4 ft 7:00PM Sep 09, 2014Forecast: 17.4 ft 1:00AM Sep 10, 2014Forecast: 17.4 ft 7:00AM Sep 10, 2014Forecast: 17.3 ft 1:00PM Sep 10, 2014Forecast: 17.3 ft 7:00PM Sep 10, 2014Forecast: 17.3 ft 1:00AM Sep 11, 2014Forecast: 17.3 ft 7:00AM Sep 11, 2014Forecast: 17.3 ft 1:00PM Sep 11, 2014Forecast: 17.3 ft 7:00PM Sep 11, 2014Forecast: 17.3 ft 1:00AM Sep 12, 2014Forecast: 17.2 ft 7:00AM Sep 12, 2014Forecast: 17.2 ft 1:00PM Sep 12, 2014Forecast: 17.2 ft 7:00PM Sep 12, 2014Forecast: 17.2 ft 1:00AM Sep 13, 2014Forecast: 17.2 ft 7:00AM Sep 13, 2014CLKM7(plotting HTIRG) Graph Created (3:35AM Aug 31, 2014)ObservedForecast (issued 10:55AM Aug 30)Latest observed value: 18.12 ft at 3:00 AM CDT 31-Aug-2014. Flood Stage is 25 ft
Printable Image
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: Forecasts for the Mississippi River at Clarksville Lock and Dam 24 are issued routinely year-round.

Return to Area Map
Upstream Gauge - at Louisiana Upstream Gauge Downstream Gauge Downstream Gauge - at Winfield Lock and Dam 25
Flood Categories (in feet)
Major Flood Stage:33
Moderate Flood Stage:31
Flood Stage:25
Action Stage:23

Historical Crests
(1) 37.73 ft on 07/29/1993
(2) 36.76 ft on 04/24/1973
(3) 36.70 ft on 06/24/2008
(4) 35.30 ft on 04/22/2013
(5) 34.78 ft on 07/09/2014
(6) 34.70 ft on 05/16/2001
(7) 33.70 ft on 10/05/1986
(8) 33.24 ft on 04/06/1983
(9) 32.70 ft on 05/30/1996
(10) 32.44 ft on 04/13/1979
Show More Historical 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
Zoom Level:16
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.
34 Route W (Kentucky Street) is closed for one block between Third Street and Highway 79.
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.
32.29 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 closes one mile south of Clarksville.
31 The Clarksville Boat Club, south of Lock & Dam 24, begins to flood. First Street begins flooding. In Hamburg, Illinois, Water Street floods.
30 East bank (Illinois side) begins to flood. Highway 79 one mile south of Clarksville 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, 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 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 422 ft 447 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
How low could the river get?
Resources Collapse
Hydrologic Resources Additional Resources
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: 27-Aug-2014 7:11 PM
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities