Skip Navigation Link  
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 Genoa Tailwater (ft)Flow (kcfs)Observed: 627.9 ft at 12:00PM Sep 14, 2014Observed: 627.9 ft at 4:00PM Sep 14, 2014Observed: 627.9 ft at 5:43PM Sep 14, 2014Observed: 627.94 ft at 8:00PM Sep 14, 2014Observed: 627.9 ft at 12:00AM Sep 15, 2014Observed: 628 ft at 4:00AM Sep 15, 2014Observed: 628.02 ft at 6:00AM Sep 15, 2014Observed: 628.02 ft at 8:00AM Sep 15, 2014Observed: 628.1 ft at 12:00PM Sep 15, 2014Observed: 628.16 ft at 4:00PM Sep 15, 2014Observed: 628.16 ft at 5:43PM Sep 15, 2014Observed: 628.17 ft at 8:00PM Sep 15, 2014Observed: 628.23 ft at 12:00AM Sep 16, 2014Observed: 628.23 ft at 12:43AM Sep 16, 2014Observed: 628.24 ft at 4:00AM Sep 16, 2014Observed: 628.25 ft at 6:00AM Sep 16, 2014Observed: 628.25 ft at 8:00AM Sep 16, 2014Observed: 628.26 ft at 12:00PM Sep 16, 2014Highest Observation: 628.27 ft at 4:00PM Sep 16, 2014Highest Observation: 628.27 ft at 5:43PM Sep 16, 2014Highest Observation: 628.27 ft at 8:00PM Sep 16, 2014Highest Observation: 628.27 ft at 12:00AM Sep 17, 2014Observed: 628.26 ft at 4:00AM Sep 17, 2014Observed: 628.26 ft at 6:00AM Sep 17, 2014Observed: 628.26 ft at 8:00AM Sep 17, 2014Highest Forecast: 628.2 ft 1:00PM Sep 17, 2014Forecast: 628.1 ft 7:00PM Sep 17, 2014Forecast: 628.1 ft 1:00AM Sep 18, 2014Forecast: 628 ft 7:00AM Sep 18, 2014Forecast: 627.9 ft 1:00PM Sep 18, 2014Forecast: 627.8 ft 7:00PM Sep 18, 2014Forecast: 627.7 ft 1:00AM Sep 19, 2014Forecast: 627.6 ft 7:00AM Sep 19, 2014Forecast: 627.5 ft 1:00PM Sep 19, 2014Forecast: 627.4 ft 7:00PM Sep 19, 2014Forecast: 627.2 ft 1:00AM Sep 20, 2014Forecast: 627.1 ft 7:00AM Sep 20, 2014Forecast: 627 ft 1:00PM Sep 20, 2014Forecast: 626.8 ft 7:00PM Sep 20, 2014Forecast: 626.7 ft 1:00AM Sep 21, 2014Forecast: 626.5 ft 7:00AM Sep 21, 2014Forecast: 626.3 ft 1:00PM Sep 21, 2014Forecast: 626.2 ft 7:00PM Sep 21, 2014Forecast: 626.1 ft 1:00AM Sep 22, 2014Forecast: 626 ft 7:00AM Sep 22, 2014Forecast: 625.9 ft 1:00PM Sep 22, 2014Forecast: 625.8 ft 7:00PM Sep 22, 2014Forecast: 625.7 ft 1:00AM Sep 23, 2014Forecast: 625.6 ft 7:00AM Sep 23, 2014GENW3(plotting HTIRZ) Graph Created (10:30AM Sep 17, 2014)ObservedForecast (issued 10:26AM Sep 16)Latest observed value: 628.26 ft at 8:00 AM CDT 17-Sep-2014. Flood Stage is 631 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: Not Available
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 Genoa are issued routinely during the warm season, and as needed at other times of the year.

Return to Area Map
Upstream Locations Upstream Gauge Downstream Gauge Downstream Gauge - at Lansing
Flood Categories (in feet)
Major Flood Stage:636
Moderate Flood Stage:634
Flood Stage:631
Action Stage:629

Historical Crests
(1) 638.40 ft on 04/22/1965
(2) 636.45 ft on 04/12/1997
(3) 636.21 ft on 04/18/2001
(4) 635.24 ft on 04/20/1969
(5) 634.52 ft on 04/20/1952
Show More Historical Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 615.30 ft on 08/18/1936
(2) 616.09 ft on 10/09/1937
(3) 617.39 ft on 01/21/1938
Show More Low Water Records

For more information on your flood risk go to

Zoom Level:15
KML Image
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
640 Water begins to go over the protective earthen dikes.
639 Water begins to flow over the lock walls at Dam 8.
638.4 Water levels reach the flood of record.
635.9 Lock and dam 8 is closed to navigation.
(1) Upstream View, May 3, 2005
(2) Downstream View, May 3, 2005
About This Location Collapse

Latitude: 43.569444° N, Longitude: 91.229722° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 616.8 ft 631 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 616.8)
(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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 616.8 ft 631 ft U.S. Army Corps of Engineers utilizes the 1912 Datum

Current/Historical Observations:

Additional Information Collapse
  • How low could the river get?
  • Link to text page with Hourly River Stage Level and Water Temperatures
  • 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
    La Crosse Weather Forecast Office
    N2788 County Rd FA
    La Crosse, WI 54601
    (608) 784-7294
    Ask Questions/Webmaster
    Page last modified: 5-Aug-2014 6:38 PM
    Privacy Policy
    About Us
    Career Opportunities