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Hydrograph River at a Glance Download
Mississippi River below Lock and Dam 5a - Winona Tailwater (ft)Flow (kcfs)Observed: 647.85 ft at 4:45PM May 01, 2024Observed: 647.86 ft at 5:00PM May 01, 2024Observed: 647.85 ft at 5:15PM May 01, 2024Observed: 647.86 ft at 5:30PM May 01, 2024Observed: 647.86 ft at 5:45PM May 01, 2024Observed: 647.85 ft at 6:00PM May 01, 2024Observed: 647.86 ft at 6:15PM May 01, 2024Observed: 647.86 ft at 6:30PM May 01, 2024Observed: 647.86 ft at 6:45PM May 01, 2024Observed: 647.86 ft at 7:00PM May 01, 2024Observed: 647.86 ft at 7:15PM May 01, 2024Observed: 647.87 ft at 7:30PM May 01, 2024Observed: 647.87 ft at 7:45PM May 01, 2024Observed: 647.87 ft at 8:00PM May 01, 2024Observed: 647.88 ft at 8:15PM May 01, 2024Observed: 647.87 ft at 8:30PM May 01, 2024Observed: 647.87 ft at 8:45PM May 01, 2024Observed: 647.87 ft at 9:00PM May 01, 2024Observed: 647.86 ft at 9:15PM May 01, 2024Observed: 647.86 ft at 9:30PM May 01, 2024Observed: 647.86 ft at 9:45PM May 01, 2024Observed: 647.86 ft at 10:00PM May 01, 2024Observed: 647.87 ft at 10:15PM May 01, 2024Observed: 647.87 ft at 10:30PM May 01, 2024Observed: 647.87 ft at 10:45PM May 01, 2024Observed: 647.87 ft at 11:00PM May 01, 2024Observed: 647.87 ft at 11:15PM May 01, 2024Observed: 647.87 ft at 11:30PM May 01, 2024Observed: 647.87 ft at 11:45PM May 01, 2024Observed: 647.88 ft at 12:00AM May 02, 2024Observed: 647.87 ft at 12:15AM May 02, 2024Observed: 647.87 ft at 12:30AM May 02, 2024Observed: 647.87 ft at 12:45AM May 02, 2024Observed: 647.86 ft at 1:00AM May 02, 2024Observed: 647.87 ft at 1:15AM May 02, 2024Observed: 647.87 ft at 1:30AM May 02, 2024Observed: 647.88 ft at 1:45AM May 02, 2024Observed: 647.88 ft at 2:00AM May 02, 2024Observed: 647.87 ft at 2:15AM May 02, 2024Observed: 647.87 ft at 2:30AM May 02, 2024Observed: 647.87 ft at 2:45AM May 02, 2024Observed: 647.88 ft at 3:00AM May 02, 2024Observed: 647.88 ft at 3:15AM May 02, 2024Observed: 647.88 ft at 3:30AM May 02, 2024Observed: 647.88 ft at 3:45AM May 02, 2024Observed: 647.88 ft at 4:00AM May 02, 2024Observed: 647.88 ft at 4:15AM May 02, 2024Observed: 647.88 ft at 4:30AM May 02, 2024Observed: 647.88 ft at 4:45AM May 02, 2024Observed: 647.88 ft at 5:00AM May 02, 2024Observed: 647.88 ft at 5:15AM May 02, 2024Observed: 647.88 ft at 5:30AM May 02, 2024Observed: 647.88 ft at 5:45AM May 02, 2024Observed: 647.89 ft at 6:00AM May 02, 2024Observed: 647.89 ft at 6:15AM May 02, 2024Observed: 647.95 ft at 6:30AM May 02, 2024Observed: 647.92 ft at 6:45AM May 02, 2024Observed: 647.84 ft at 7:00AM May 02, 2024Observed: 647.9 ft at 7:15AM May 02, 2024Observed: 647.85 ft at 7:30AM May 02, 2024Observed: 647.86 ft at 7:45AM May 02, 2024Observed: 647.87 ft at 8:00AM May 02, 2024Observed: 647.97 ft at 8:15AM May 02, 2024Observed: 647.94 ft at 8:30AM May 02, 2024Observed: 647.94 ft at 8:45AM May 02, 2024Observed: 647.95 ft at 9:00AM May 02, 2024Observed: 647.94 ft at 9:15AM May 02, 2024Observed: 647.88 ft at 9:30AM May 02, 2024Observed: 647.95 ft at 9:45AM May 02, 2024Observed: 647.89 ft at 10:00AM May 02, 2024Observed: 647.89 ft at 10:15AM May 02, 2024Observed: 647.99 ft at 10:30AM May 02, 2024Observed: 647.96 ft at 10:45AM May 02, 2024Observed: 647.97 ft at 11:00AM May 02, 2024Observed: 647.96 ft at 11:15AM May 02, 2024Observed: 647.97 ft at 11:30AM May 02, 2024Observed: 647.96 ft at 11:45AM May 02, 2024Observed: 647.97 ft at 12:00PM May 02, 2024Observed: 647.97 ft at 12:15PM May 02, 2024Observed: 647.98 ft at 12:30PM May 02, 2024Observed: 647.96 ft at 12:45PM May 02, 2024Observed: 647.96 ft at 1:00PM May 02, 2024Observed: 647.98 ft at 1:15PM May 02, 2024Observed: 647.96 ft at 1:30PM May 02, 2024Observed: 647.97 ft at 1:45PM May 02, 2024Observed: 647.97 ft at 2:00PM May 02, 2024Observed: 647.97 ft at 2:15PM May 02, 2024Observed: 647.96 ft at 2:30PM May 02, 2024Observed: 647.97 ft at 2:45PM May 02, 2024Observed: 647.96 ft at 3:00PM May 02, 2024Observed: 647.96 ft at 3:15PM May 02, 2024Observed: 647.97 ft at 3:30PM May 02, 2024Observed: 647.97 ft at 3:45PM May 02, 2024Observed: 647.97 ft at 4:00PM May 02, 2024Observed: 647.98 ft at 4:15PM May 02, 2024Observed: 647.97 ft at 4:30PM May 02, 2024Observed: 647.97 ft at 4:45PM May 02, 2024Observed: 647.97 ft at 5:00PM May 02, 2024Observed: 647.98 ft at 5:15PM May 02, 2024Observed: 647.98 ft at 5:30PM May 02, 2024Observed: 647.98 ft at 5:45PM May 02, 2024Observed: 648.04 ft at 6:00PM May 02, 2024Observed: 648.06 ft at 6:15PM May 02, 2024Observed: 648.06 ft at 6:30PM May 02, 2024Observed: 648.07 ft at 6:45PM May 02, 2024Observed: 648.08 ft at 7:00PM May 02, 2024Observed: 648.08 ft at 7:15PM May 02, 2024Observed: 648.09 ft at 7:30PM May 02, 2024Observed: 648.09 ft at 7:45PM May 02, 2024Observed: 648.09 ft at 8:00PM May 02, 2024Observed: 648.09 ft at 8:15PM May 02, 2024Observed: 648.09 ft at 8:30PM May 02, 2024Observed: 648.1 ft at 8:45PM May 02, 2024Observed: 648.1 ft at 9:00PM May 02, 2024Observed: 648.1 ft at 9:15PM May 02, 2024Observed: 648.11 ft at 9:30PM May 02, 2024Observed: 648.11 ft at 9:45PM May 02, 2024Observed: 648.11 ft at 10:00PM May 02, 2024Observed: 648.12 ft at 10:15PM May 02, 2024Observed: 648.11 ft at 10:30PM May 02, 2024Observed: 648.11 ft at 10:45PM May 02, 2024Observed: 648.12 ft at 11:00PM May 02, 2024Observed: 648.12 ft at 11:15PM May 02, 2024Observed: 648.13 ft at 11:30PM May 02, 2024Observed: 648.13 ft at 11:45PM May 02, 2024Observed: 648.13 ft at 12:00AM May 03, 2024Observed: 648.14 ft at 12:15AM May 03, 2024Observed: 648.13 ft at 12:30AM May 03, 2024Observed: 648.14 ft at 12:45AM May 03, 2024Observed: 648.14 ft at 1:00AM May 03, 2024Observed: 648.14 ft at 1:15AM May 03, 2024Observed: 648.14 ft at 1:30AM May 03, 2024Observed: 648.15 ft at 1:45AM May 03, 2024Observed: 648.16 ft at 2:00AM May 03, 2024Observed: 648.15 ft at 2:15AM May 03, 2024Observed: 648.15 ft at 2:30AM May 03, 2024Observed: 648.15 ft at 2:45AM May 03, 2024Observed: 648.16 ft at 3:00AM May 03, 2024Observed: 648.16 ft at 3:15AM May 03, 2024Observed: 648.16 ft at 3:30AM May 03, 2024Observed: 648.16 ft at 3:45AM May 03, 2024Observed: 648.17 ft at 4:00AM May 03, 2024Observed: 648.16 ft at 4:15AM May 03, 2024Observed: 648.17 ft at 4:30AM May 03, 2024Observed: 648.17 ft at 4:45AM May 03, 2024Observed: 648.18 ft at 5:00AM May 03, 2024Observed: 648.17 ft at 5:15AM May 03, 2024Observed: 648.18 ft at 5:30AM May 03, 2024Observed: 648.18 ft at 5:45AM May 03, 2024Observed: 648.18 ft at 6:00AM May 03, 2024Observed: 648.19 ft at 6:15AM May 03, 2024Observed: 648.19 ft at 6:30AM May 03, 2024Observed: 648.19 ft at 6:45AM May 03, 2024Observed: 648.19 ft at 7:00AM May 03, 2024Observed: 648.19 ft at 7:15AM May 03, 2024Observed: 648.19 ft at 7:30AM May 03, 2024Observed: 648.19 ft at 7:45AM May 03, 2024Observed: 648.2 ft at 8:00AM May 03, 2024Observed: 648.34 ft at 8:15AM May 03, 2024Observed: 648.35 ft at 8:30AM May 03, 2024Observed: 648.37 ft at 8:45AM May 03, 2024Observed: 648.39 ft at 9:00AM May 03, 2024Observed: 648.4 ft at 9:15AM May 03, 2024Observed: 648.42 ft at 9:30AM May 03, 2024Observed: 648.42 ft at 9:45AM May 03, 2024Observed: 648.44 ft at 10:00AM May 03, 2024Observed: 648.44 ft at 10:15AM May 03, 2024Observed: 648.44 ft at 10:30AM May 03, 2024Observed: 648.46 ft at 10:45AM May 03, 2024Observed: 648.46 ft at 11:00AM May 03, 2024Observed: 648.47 ft at 11:15AM May 03, 2024Observed: 648.47 ft at 11:30AM May 03, 2024Observed: 648.48 ft at 11:45AM May 03, 2024Observed: 648.49 ft at 12:00PM May 03, 2024Observed: 648.5 ft at 12:15PM May 03, 2024Observed: 648.5 ft at 12:30PM May 03, 2024Observed: 648.51 ft at 12:45PM May 03, 2024Observed: 648.51 ft at 1:00PM May 03, 2024Observed: 648.52 ft at 1:15PM May 03, 2024Observed: 648.52 ft at 1:30PM May 03, 2024Observed: 648.53 ft at 1:45PM May 03, 2024Observed: 648.54 ft at 2:00PM May 03, 2024Observed: 648.55 ft at 2:15PM May 03, 2024Observed: 648.56 ft at 2:30PM May 03, 2024Observed: 648.56 ft at 2:45PM May 03, 2024Observed: 648.57 ft at 3:00PM May 03, 2024Observed: 648.57 ft at 3:15PM May 03, 2024Observed: 648.57 ft at 3:30PM May 03, 2024Observed: 648.59 ft at 3:45PM May 03, 2024Observed: 648.6 ft at 4:00PM May 03, 2024Observed: 648.6 ft at 4:15PM May 03, 2024Observed: 648.61 ft at 4:30PM May 03, 2024Observed: 648.61 ft at 4:45PM May 03, 2024Observed: 648.62 ft at 5:00PM May 03, 2024Observed: 648.62 ft at 5:15PM May 03, 2024Observed: 648.7 ft at 5:30PM May 03, 2024Observed: 648.7 ft at 5:45PM May 03, 2024Observed: 648.72 ft at 6:00PM May 03, 2024Observed: 648.73 ft at 6:15PM May 03, 2024Observed: 648.75 ft at 6:30PM May 03, 2024Observed: 648.74 ft at 6:45PM May 03, 2024Observed: 648.75 ft at 7:00PM May 03, 2024Observed: 648.75 ft at 7:15PM May 03, 2024Observed: 648.75 ft at 7:30PM May 03, 2024Observed: 648.76 ft at 7:45PM May 03, 2024Observed: 648.76 ft at 8:00PM May 03, 2024Observed: 648.76 ft at 8:15PM May 03, 2024Observed: 648.76 ft at 8:30PM May 03, 2024Observed: 648.76 ft at 8:45PM May 03, 2024Observed: 648.77 ft at 9:00PM May 03, 2024Observed: 648.78 ft at 9:15PM May 03, 2024Observed: 648.78 ft at 9:30PM May 03, 2024Observed: 648.78 ft at 9:45PM May 03, 2024Observed: 648.78 ft at 10:00PM May 03, 2024Observed: 648.78 ft at 10:15PM May 03, 2024Observed: 648.79 ft at 10:30PM May 03, 2024Observed: 648.8 ft at 10:45PM May 03, 2024Observed: 648.81 ft at 11:00PM May 03, 2024Observed: 648.8 ft at 11:15PM May 03, 2024Observed: 648.8 ft at 11:30PM May 03, 2024Observed: 648.79 ft at 11:45PM May 03, 2024Observed: 648.79 ft at 12:00AM May 04, 2024Observed: 648.81 ft at 12:15AM May 04, 2024Observed: 648.81 ft at 12:30AM May 04, 2024Observed: 648.81 ft at 12:45AM May 04, 2024Observed: 648.8 ft at 1:00AM May 04, 2024Observed: 648.81 ft at 1:15AM May 04, 2024Observed: 648.81 ft at 1:30AM May 04, 2024Observed: 648.82 ft at 1:45AM May 04, 2024Observed: 648.82 ft at 2:00AM May 04, 2024Observed: 648.83 ft at 2:15AM May 04, 2024Observed: 648.82 ft at 2:30AM May 04, 2024Observed: 648.82 ft at 2:45AM May 04, 2024Observed: 648.83 ft at 3:00AM May 04, 2024Observed: 648.83 ft at 3:15AM May 04, 2024Observed: 648.83 ft at 3:30AM May 04, 2024Observed: 648.83 ft at 3:45AM May 04, 2024Observed: 648.84 ft at 4:00AM May 04, 2024Observed: 648.83 ft at 4:15AM May 04, 2024Observed: 648.84 ft at 4:30AM May 04, 2024Observed: 648.83 ft at 4:45AM May 04, 2024Observed: 648.84 ft at 5:00AM May 04, 2024Observed: 648.84 ft at 5:15AM May 04, 2024Observed: 648.84 ft at 5:30AM May 04, 2024Observed: 648.85 ft at 5:45AM May 04, 2024Observed: 648.85 ft at 6:00AM May 04, 2024Observed: 648.84 ft at 6:15AM May 04, 2024Observed: 648.86 ft at 6:30AM May 04, 2024Observed: 648.85 ft at 6:45AM May 04, 2024Observed: 648.85 ft at 7:00AM May 04, 2024Observed: 648.86 ft at 7:15AM May 04, 2024Observed: 648.85 ft at 7:30AM May 04, 2024Observed: 648.86 ft at 7:45AM May 04, 2024Observed: 648.86 ft at 8:00AM May 04, 2024Observed: 648.95 ft at 8:15AM May 04, 2024Observed: 648.98 ft at 8:30AM May 04, 2024Observed: 648.97 ft at 8:45AM May 04, 2024Observed: 648.99 ft at 9:00AM May 04, 2024Observed: 649 ft at 9:15AM May 04, 2024Observed: 649.02 ft at 9:30AM May 04, 2024Observed: 649.03 ft at 9:45AM May 04, 2024Observed: 649.05 ft at 10:00AM May 04, 2024Observed: 649.05 ft at 10:15AM May 04, 2024Observed: 649.06 ft at 10:30AM May 04, 2024Observed: 649.06 ft at 10:45AM May 04, 2024Observed: 649.08 ft at 11:00AM May 04, 2024Observed: 649.09 ft at 11:15AM May 04, 2024Observed: 649.1 ft at 11:30AM May 04, 2024Observed: 649.11 ft at 11:45AM May 04, 2024Observed: 649.11 ft at 12:00PM May 04, 2024Observed: 649.11 ft at 12:15PM May 04, 2024Observed: 649.12 ft at 12:30PM May 04, 2024Observed: 649.13 ft at 12:45PM May 04, 2024Observed: 649.14 ft at 1:00PM May 04, 2024Observed: 649.15 ft at 1:15PM May 04, 2024Observed: 649.15 ft at 1:30PM May 04, 2024Observed: 649.26 ft at 1:45PM May 04, 2024Observed: 649.27 ft at 2:00PM May 04, 2024Observed: 649.28 ft at 2:15PM May 04, 2024Observed: 649.3 ft at 2:30PM May 04, 2024Highest Observation: 649.31 ft at 2:45PM May 04, 2024Highest Observation: 649.31 ft at 3:00PM May 04, 2024Highest Observation: 649.31 ft at 3:15PM May 04, 2024Forecast: 649 ft 7:00PM May 04, 2024Forecast: 649.2 ft 1:00AM May 05, 2024Forecast: 649.4 ft 7:00AM May 05, 2024Forecast: 649.6 ft 1:00PM May 05, 2024Forecast: 649.8 ft 7:00PM May 05, 2024Forecast: 650 ft 1:00AM May 06, 2024Forecast: 650.1 ft 7:00AM May 06, 2024Forecast: 650.2 ft 1:00PM May 06, 2024Forecast: 650.3 ft 7:00PM May 06, 2024Forecast: 650.3 ft 1:00AM May 07, 2024Forecast: 650.4 ft 7:00AM May 07, 2024Forecast: 650.6 ft 1:00PM May 07, 2024Forecast: 650.7 ft 7:00PM May 07, 2024Forecast: 650.8 ft 1:00AM May 08, 2024Forecast: 651 ft 7:00AM May 08, 2024Forecast: 651.1 ft 1:00PM May 08, 2024Forecast: 651.1 ft 7:00PM May 08, 2024Forecast: 651.2 ft 1:00AM May 09, 2024Forecast: 651.3 ft 7:00AM May 09, 2024Forecast: 651.3 ft 1:00PM May 09, 2024Forecast: 651.4 ft 7:00PM May 09, 2024Forecast: 651.5 ft 1:00AM May 10, 2024Forecast: 651.5 ft 7:00AM May 10, 2024Highest Forecast: 651.6 ft 1:00PM May 10, 2024Highest Forecast: 651.6 ft 7:00PM May 10, 2024Highest Forecast: 651.6 ft 1:00AM May 11, 2024Highest Forecast: 651.6 ft 7:00AM May 11, 2024USACE - Building StrongWIDM5(plotting HTIRG) Graph Created (4:30PM May 4, 2024)ObservedForecast (issued 8:30AM May 4)Latest observed value: 649.31 ft at 3:15 PM CDT 4-May-2024. Flood Stage is 655 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: Forecasts for the Mississippi River below Lock and Dam 5a - Winona are issued routinely during the navigation season, and as needed at other times of the year.

Vertical Datum is the USACE 1912 datum

Return to Area Map
Upstream Gauge - below Lock and Dam 5 - Minnesota City Upstream Gauge Downstream Gauge Downstream Gauge - at Winona - Pool 6
Flood Categories (in feet)
Major Flood Stage: 661
Moderate Flood Stage: 659
Flood Stage: 655
Action Stage: 650
Low Stage (in feet): -9999

Historic Crests
(1) 663.35 ft on 04/19/1965
(2) 661.95 ft on 04/17/2001
(3) 661.60 ft on 04/11/1997
(4) 661.37 ft on 04/19/1969
(5) 660.51 ft on 04/26/2023 (P)
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 660.51 ft on 04/26/2023 (P)
(2) 656.55 ft on 05/25/2019
(3) 658.75 ft on 04/03/2019
(4) 657.00 ft on 07/02/2014
(5) 658.17 ft on 04/15/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 639.65 ft on 08/17/1936
(2) 642.96 ft on 01/27/1944
(3) 643.95 ft on 12/13/1980
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.
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
664 Water reaches the top of the protective earthen levee.
663.35 Water levels reach the flood of record.
663 Lock walls go underwater.
660 Lock and dam 5A closes to navigation.
651 Water begins to impact campsites along river upstream at Merrick State Park.
Photos
(1) Downstream view at Winona Dam 5A, September 11th, 2012
(2) Downstream view at Winona Dam 5A, September 11th, 2012
About This Location Collapse

Latitude: 44.086500° N, Longitude: 91.668500° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 655 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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 0.0 ft 655 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
  • Link to river gage data along Navigational Mississippi River from Twin Cities to Lock and Dam 10
  • Link to Lock & Dam data and other locations in USACE’s St. Paul District
    • 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
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