Missouri River at Decatur
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) 04/03/2025 2:00 PM CDTRecord: 44.4 ftLow Threshold: 12.5 ftCATEGORY STAGE 
Major Flooding 41 ft Moderate Flooding 38 ft Minor Flooding 35 ft Action 33 ft Reliability of the Forecast:
NOTE: Forecasts are issued as needed during times of high water, but are not routinely available.
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
- 44 - Widespread major flooding would be prevalent along the entire reach from just upstream of Decatur downstream to the mouth of the Little Sioux River.
- 38 - Extensive flooding along the reach would be encountered. Areas impacted will include Marina Drive as well as numerous homes along the river.
- 35 - Local marinas, boat docks and low lying areas begin to flood.
Gauge Location
Recent Crests
| 1. | 37.55 ft | on 06-26-2024 | (P) |
| 2. | 23.19 ft | on 02-02-2023 | |
| 3. | 21.73 ft | on 08-16-2022 | |
| 4. | 21.80 ft | on 09-01-2021 | |
| 5. | 27.64 ft | on 04-02-2020 |
Recent Crests
| 1. | 37.55 ft | on 06-26-2024 | (P) |
| 2. | 23.19 ft | on 02-02-2023 | |
| 3. | 21.73 ft | on 08-16-2022 | |
| 4. | 21.80 ft | on 09-01-2021 | |
| 5. | 27.64 ft | on 04-02-2020 | |
| 6. | 36.42 ft | on 09-20-2019 | |
| 7. | 35.72 ft | on 06-03-2019 | |
| 8. | 36.51 ft | on 03-17-2019 | |
| 9. | 32.18 ft | on 06-27-2018 | |
| 10. | 24.69 ft | on 05-30-2017 | |
| 11. | 23.64 ft | on 06-19-2016 | |
| 12. | 22.57 ft | on 07-11-2015 | |
| 13. | 31.01 ft | on 06-20-2014 | |
| 14. | 25.25 ft | on 05-29-2013 | |
| 15. | 24.50 ft | on 06-02-2012 | |
| 16. | 40.24 ft | on 07-21-2011 | |
| 17. | 31.73 ft | on 08-06-2010 | |
| 18. | 25.74 ft | on 07-11-2009 | |
| 19. | 25.03 ft | on 06-11-2008 | |
| 20. | 25.38 ft | on 03-14-2007 | |
| 21. | 23.55 ft | on 04-12-2006 | |
| 22. | 24.70 ft | on 06-09-2005 | |
| 23. | 25.01 ft | on 06-03-2004 | |
| 24. | 23.84 ft | on 09-12-2003 | |
| 25. | 23.75 ft | on 09-23-2002 | |
| 26. | 28.89 ft | on 04-28-2001 | |
| 27. | 26.24 ft | on 06-26-2000 | |
| 28. | 28.21 ft | on 07-22-1999 | |
| 29. | 25.55 ft | on 11-29-1998 | |
| 30. | 31.99 ft | on 04-15-1997 | |
| 31. | 32.31 ft | on 07-18-1996 | |
| 32. | 30.10 ft | on 06-02-1995 | |
| 33. | 27.70 ft | on 06-17-1994 | |
| 34. | 32.19 ft | on 07-16-1993 | |
| 35. | 25.12 ft | on 07-13-1992 | |
| 36. | 23.99 ft | on 06-01-1991 | |
| 37. | 25.17 ft | on 05-19-1990 | |
| 38. | 24.55 ft | on 07-18-1989 | |
| 39. | 25.59 ft | on 09-16-1988 | |
| 40. | 34.60 ft | on 06-26-1984 | |
| 41. | 28.10 ft | on 06-29-1983 | |
| 42. | 44.41 ft | on 04-16-1952 |
Historic Crests
| 1. | 44.41 ft | on 04-16-1952 | |
| 2. | 40.24 ft | on 07-21-2011 | |
| 3. | 37.55 ft | on 06-26-2024 | (P) |
| 4. | 36.51 ft | on 03-17-2019 | |
| 5. | 36.42 ft | on 09-20-2019 |
Historic Crests
| 1. | 44.41 ft | on 04-16-1952 | |
| 2. | 40.24 ft | on 07-21-2011 | |
| 3. | 37.55 ft | on 06-26-2024 | (P) |
| 4. | 36.51 ft | on 03-17-2019 | |
| 5. | 36.42 ft | on 09-20-2019 | |
| 6. | 35.72 ft | on 06-03-2019 | |
| 7. | 34.60 ft | on 06-26-1984 | |
| 8. | 32.31 ft | on 07-18-1996 | |
| 9. | 32.19 ft | on 07-16-1993 | |
| 10. | 32.18 ft | on 06-27-2018 | |
| 11. | 31.99 ft | on 04-15-1997 | |
| 12. | 31.73 ft | on 08-06-2010 | |
| 13. | 31.01 ft | on 06-20-2014 | |
| 14. | 30.10 ft | on 06-02-1995 | |
| 15. | 28.89 ft | on 04-28-2001 | |
| 16. | 28.21 ft | on 07-22-1999 | |
| 17. | 28.10 ft | on 06-29-1983 | |
| 18. | 27.70 ft | on 06-17-1994 | |
| 19. | 27.64 ft | on 04-02-2020 | |
| 20. | 26.24 ft | on 06-26-2000 | |
| 21. | 25.74 ft | on 07-11-2009 | |
| 22. | 25.59 ft | on 09-16-1988 | |
| 23. | 25.55 ft | on 11-29-1998 | |
| 24. | 25.38 ft | on 03-14-2007 | |
| 25. | 25.25 ft | on 05-29-2013 | |
| 26. | 25.17 ft | on 05-19-1990 | |
| 27. | 25.12 ft | on 07-13-1992 | |
| 28. | 25.03 ft | on 06-11-2008 | |
| 29. | 25.01 ft | on 06-03-2004 | |
| 30. | 24.70 ft | on 06-09-2005 | |
| 31. | 24.69 ft | on 05-30-2017 | |
| 32. | 24.55 ft | on 07-18-1989 | |
| 33. | 24.50 ft | on 06-02-2012 | |
| 34. | 23.99 ft | on 06-01-1991 | |
| 35. | 23.84 ft | on 09-12-2003 | |
| 36. | 23.75 ft | on 09-23-2002 | |
| 37. | 23.64 ft | on 06-19-2016 | |
| 38. | 23.55 ft | on 04-12-2006 | |
| 39. | 23.19 ft | on 02-02-2023 | |
| 40. | 22.57 ft | on 07-11-2015 | |
| 41. | 21.80 ft | on 09-01-2021 | |
| 42. | 21.73 ft | on 08-16-2022 |
Low Water Records
| 1. | 12.58 ft | on 01-13-2024 |
Low Water Records
| 1. | 12.58 ft | on 01-13-2024 |
Vertical Datum Table
| type | NAVD88 |
|---|---|
| major Flooding | 1051.56 ft |
| moderate Flooding | 1048.56 ft |
| minor Flooding | 1045.56 ft |
| action | 1043.56 ft |
| Latest Value | 1030.83 ft |
| Gauge Zero | 1010.56 ft |
Unique Local Info
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.