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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 - Pool 6 are issued routinely during the navigation season, and as needed at other times of the year.
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Upstream Gauge - below Lock and Dam 5a - Winona Upstream Gauge Downstream Gauge Downstream Gauge - below Lock and Dam 6 - Trempealeau
Zoom Level:15
Flood Categories (in feet)
Major Flood Stage: 18
Moderate Flood Stage: 15
Flood Stage: 13
Action Stage: 11
Low Stage (in feet): -9999

Historic Crests
(1) 20.77 ft on 04/19/1965
(2) 20.07 ft on 04/17/2001
(3) 19.44 ft on 04/19/1969
(4) 18.81 ft on 04/26/2023 (P)
(5) 18.30 ft on 04/11/1997
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(P): Preliminary values subject to further review.

Recent Crests
(1) 18.81 ft on 04/26/2023 (P)
(2) 15.13 ft on 05/25/2019
(3) 17.30 ft on 04/03/2019
(4) 13.44 ft on 05/24/2017
(5) 15.52 ft on 07/02/2014
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 1.95 ft on 01/27/1944
(2) 3.57 ft on 01/05/1946
(3) 3.60 ft on 02/03/1945
Show More Low Water Records
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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
25 Water levels reach the top of the emergency dike.
24 Water overtops the levee downtown.
22 Water levels reach the designed dike protection level.
20.77 The water reaches the flood of record set in 1965.
20.5 Railroad lines go under water.
17 Some railroad lines may become inoperative.
16.6 Lock and Dam 6 goes out of operation.
16 Lock and Dam 5A goes out of operation.
13 Prairie Island Park begins to flood. Pumping operations are underway by the city of Winona, and dike patrols are started.
12.5 Spillway lot and Saint Charles Street boat launch is barricaded.
10.5 Pumping stations are put into operation along Washington, Kansas, and High Forest streets.
10 Olmstead Street Pumping Station is put into operation.
9 East Riverfront Street along Levee Park is closed due to flooding.
(1) Upstream view at Winona, October 4th, 2011, Stage = 5.56 ft
(2) Downstream view at Winona, October 4th, 2011, Stage = 5.56 ft

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
  • 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‚Äôs St. Paul District
  • 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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