Mississippi River below Lock and Dam 5a - Winona
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
Sender
Sent
- Warning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.
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Observed (OBS) 06/08/2025 3:15 PM CDTOfficial Forecast (FCST) 06/08/2025 9:12 AM CDTRecord: 663.4 ftCATEGORY STAGE 
Major Flooding 661 ft Moderate Flooding 659 ft Minor Flooding 655 ft Action 650 ft Reliability of the Forecast:
NOTE: Forecasts are issued routinely during the navigation season, and as needed at other times of the year.
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.
National Water Model Hydrograph
Official NWS streamflow forecasts are produced by NWS hydrologic forecasters for river gauge locations using hydrologic models which are calibrated to that location. This process considers additional guidance and information, including local expertise and experience, to produce the best forecast possible. The NWM output provides supplemental guidance to NWS forecasters and should not be considered an official NWS river forecast.
Flood Impacts
- 664 - Water reaches the top of the protective earthen levee.
- 663.35 - Water levels reach the flood of record.
- 663 - Lock walls go underwater.
Gauge Info
| Coordinates | 44.0865, -91.6685 |
| RFC | NCRFC |
| State | MN |
| WFO | ARX |
| County | Winona |
| Data Provider(s) | |
| US Army Corps of Engineers | USACE - Building Strong |
| USGS | 05378490 |
Gauge Location
Recent Crests
| 1. | 657.63 ft | on 07-02-2024 | |
| 2. | 660.51 ft | on 04-26-2023 | (P) |
| 3. | 656.55 ft | on 05-25-2019 | |
| 4. | 658.75 ft | on 04-03-2019 | |
| 5. | 657.00 ft | on 07-02-2014 |
Recent Crests
| 1. | 657.63 ft | on 07-02-2024 | |
| 2. | 660.51 ft | on 04-26-2023 | (P) |
| 3. | 656.55 ft | on 05-25-2019 | |
| 4. | 658.75 ft | on 04-03-2019 | |
| 5. | 657.00 ft | on 07-02-2014 | |
| 6. | 658.17 ft | on 04-15-2011 | |
| 7. | 655.12 ft | on 09-29-2010 | |
| 8. | 654.51 ft | on 05-17-2003 | |
| 9. | 661.95 ft | on 04-17-2001 | |
| 10. | 661.60 ft | on 04-11-1997 | |
| 11. | 656.34 ft | on 04-25-1996 | |
| 12. | 658.28 ft | on 06-26-1993 | |
| 13. | 658.24 ft | on 04-07-1986 | |
| 14. | 656.08 ft | on 03-12-1983 | |
| 15. | 656.08 ft | on 04-23-1982 | |
| 16. | 658.06 ft | on 05-02-1975 | |
| 17. | 656.08 ft | on 03-20-1973 | |
| 18. | 661.37 ft | on 04-19-1969 | |
| 19. | 658.69 ft | on 04-06-1967 | |
| 20. | 663.35 ft | on 04-19-1965 | |
| 21. | 658.13 ft | on 05-07-1954 | |
| 22. | 659.90 ft | on 04-20-1952 | |
| 23. | 659.26 ft | on 04-18-1951 | |
| 24. | 656.70 ft | on 06-22-1943 |
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) |
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) |
| 6. | 659.90 ft | on 04-20-1952 | |
| 7. | 659.26 ft | on 04-18-1951 | |
| 8. | 658.75 ft | on 04-03-2019 | |
| 9. | 658.69 ft | on 04-06-1967 | |
| 10. | 658.28 ft | on 06-26-1993 | |
| 11. | 658.24 ft | on 04-07-1986 | |
| 12. | 658.17 ft | on 04-15-2011 | |
| 13. | 658.13 ft | on 05-07-1954 | |
| 14. | 658.06 ft | on 05-02-1975 | |
| 15. | 657.63 ft | on 07-02-2024 | |
| 16. | 657.00 ft | on 07-02-2014 | |
| 17. | 656.70 ft | on 06-22-1943 | |
| 18. | 656.55 ft | on 05-25-2019 | |
| 19. | 656.34 ft | on 04-25-1996 | |
| 20. | 656.08 ft | on 03-12-1983 | |
| 21. | 656.08 ft | on 03-20-1973 | |
| 22. | 656.08 ft | on 04-23-1982 | |
| 23. | 655.12 ft | on 09-29-2010 | |
| 24. | 654.51 ft | on 05-17-2003 |
Unique Local Info
Where is Lock and Dam 5a flow in relation to years past?
Collaborative Agencies
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.