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Advanced Hydrologic Prediction Service
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This probabilistic forecast is issued by the North Central River Forecast Center.
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About this graph
Forecasts for the Mississippi River at Winona Dam 5a are issued routinely during the warm season, and as needed at other times of the year.
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Upstream Gauge - at Minnesota City Upstream Gauge Downstream Gauge Downstream Gauge - at Winona
Zoom Level:16
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)
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(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
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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.
(1) Downstream view at Winona Dam 5A, September 11th, 2012
(2) Downstream view at Winona Dam 5A, September 11th, 2012

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
  • How low could the river get?
  • Link to text page with Hourly River Stage Level and Water Temperatures
  • 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.
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    Page last modified: 2-Nov-2020 7:29 PM
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