St. Marys River near Fort Wayne
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) 04/04/2025 5:10 PM EDTOfficial Forecast (FCST) 04/04/2025 4:01 PM EDTRecord: 21.2 ftCATEGORY STAGE 
Major Flooding 19 ft Moderate Flooding 17 ft Minor Flooding 14 ft Action 12 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 48 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
- 22 - Structural damage is done to homes and businesses on the south side of Fort Wayne near the Saint Mary's River. Record flood was set on July 9, 2003 when the river reached 21.2 feet.
- 20 - A major flood is in progress and water is nearing the top of many levees.
- 19 - Flooding reaching major category with isolated evacuations becoming necessary. Some roads and bridges are closed at this level.
Gauge Info
| Coordinates | 40.9878, -85.1119 |
| RFC | OHRFC |
| State | IN |
| WFO | IWX |
| County | Allen |
| Data Provider(s) | |
| the USGS (04182000) | Jump to USGS site |
| USGS | 04182000 |
Gauge Location
Recent Crests
| 1. | 12.91 ft | on 07-17-2021 |
| 2. | 13.21 ft | on 01-12-2020 |
| 3. | 15.27 ft | on 04-29-2019 |
| 4. | 15.27 ft | on 04-29-2019 |
| 5. | 12.84 ft | on 02-21-2018 |
Recent Crests
| 1. | 12.91 ft | on 07-17-2021 |
| 2. | 13.21 ft | on 01-12-2020 |
| 3. | 15.27 ft | on 04-29-2019 |
| 4. | 15.27 ft | on 04-29-2019 |
| 5. | 12.84 ft | on 02-21-2018 |
| 6. | 12.73 ft | on 02-21-2018 |
| 7. | 15.89 ft | on 05-27-2017 |
| 8. | 15.89 ft | on 05-27-2017 |
| 9. | 10.80 ft | on 03-15-2016 |
| 10. | 13.09 ft | on 01-01-2016 |
| 11. | 14.18 ft | on 12-29-2015 |
| 12. | 15.74 ft | on 06-29-2015 |
| 13. | 19.88 ft | on 06-19-2015 |
| 14. | 14.96 ft | on 02-26-2014 |
| 15. | 14.07 ft | on 04-12-2013 |
| 16. | 16.83 ft | on 01-15-2013 |
| 17. | 11.87 ft | on 01-18-2012 |
| 18. | 15.00 ft | on 12-04-2011 |
| 19. | 14.73 ft | on 05-26-2011 |
| 20. | 12.73 ft | on 05-22-2010 |
| 21. | 16.97 ft | on 03-11-2009 |
| 22. | 16.06 ft | on 02-13-2009 |
| 23. | 17.67 ft | on 02-09-2008 |
| 24. | 17.68 ft | on 02-09-2008 |
| 25. | 14.62 ft | on 01-17-2007 |
| 26. | 11.87 ft | on 12-31-2005 |
| 27. | 19.06 ft | on 01-14-2005 |
| 28. | 15.23 ft | on 01-07-2005 |
| 29. | 15.48 ft | on 06-14-2004 |
| 30. | 12.78 ft | on 01-06-2004 |
| 31. | 13.96 ft | on 08-06-2003 |
| 32. | 21.20 ft | on 07-09-2003 |
| 33. | 15.81 ft | on 05-12-2003 |
| 34. | 13.49 ft | on 04-01-2002 |
| 35. | 12.32 ft | on 02-01-2002 |
| 36. | 11.17 ft | on 10-17-2001 |
| 37. | 11.78 ft | on 02-10-2001 |
| 38. | 17.03 ft | on 01-26-1999 |
| 39. | 14.32 ft | on 04-11-1998 |
| 40. | 15.23 ft | on 03-01-1997 |
| 41. | 14.60 ft | on 05-30-1996 |
| 42. | 11.96 ft | on 04-11-1995 |
| 43. | 14.34 ft | on 04-14-1994 |
| 44. | 14.07 ft | on 07-06-1993 |
| 45. | 17.07 ft | on 07-18-1992 |
| 46. | 17.92 ft | on 01-01-1991 |
| 47. | 8.55 ft | on 02-04-1987 |
| 48. | 18.33 ft | on 02-26-1985 |
| 49. | 19.66 ft | on 03-14-1982 |
| 50. | 15.62 ft | on 03-08-1963 |
| 51. | 7.49 ft | on 04-04-1931 |
Historic Crests
| 1. | 21.20 ft | on 07-09-2003 |
| 2. | 19.88 ft | on 06-19-2015 |
| 3. | 19.66 ft | on 03-14-1982 |
| 4. | 19.06 ft | on 01-14-2005 |
| 5. | 18.33 ft | on 02-26-1985 |
Historic Crests
| 1. | 21.20 ft | on 07-09-2003 |
| 2. | 19.88 ft | on 06-19-2015 |
| 3. | 19.66 ft | on 03-14-1982 |
| 4. | 19.06 ft | on 01-14-2005 |
| 5. | 18.33 ft | on 02-26-1985 |
| 6. | 17.92 ft | on 01-01-1991 |
| 7. | 17.68 ft | on 02-09-2008 |
| 8. | 17.67 ft | on 02-09-2008 |
| 9. | 17.07 ft | on 07-18-1992 |
| 10. | 17.03 ft | on 01-26-1999 |
| 11. | 16.97 ft | on 03-11-2009 |
| 12. | 16.83 ft | on 01-15-2013 |
| 13. | 16.06 ft | on 02-13-2009 |
| 14. | 15.89 ft | on 05-27-2017 |
| 15. | 15.89 ft | on 05-27-2017 |
| 16. | 15.81 ft | on 05-12-2003 |
| 17. | 15.74 ft | on 06-29-2015 |
| 18. | 15.62 ft | on 03-08-1963 |
| 19. | 15.48 ft | on 06-14-2004 |
| 20. | 15.27 ft | on 04-29-2019 |
| 21. | 15.27 ft | on 04-29-2019 |
| 22. | 15.23 ft | on 01-07-2005 |
| 23. | 15.23 ft | on 03-01-1997 |
| 24. | 15.00 ft | on 12-04-2011 |
| 25. | 14.96 ft | on 02-26-2014 |
| 26. | 14.73 ft | on 05-26-2011 |
| 27. | 14.62 ft | on 01-17-2007 |
| 28. | 14.60 ft | on 05-30-1996 |
| 29. | 14.34 ft | on 04-14-1994 |
| 30. | 14.32 ft | on 04-11-1998 |
| 31. | 14.18 ft | on 12-29-2015 |
| 32. | 14.07 ft | on 04-12-2013 |
| 33. | 14.07 ft | on 07-06-1993 |
| 34. | 13.96 ft | on 08-06-2003 |
| 35. | 13.49 ft | on 04-01-2002 |
| 36. | 13.21 ft | on 01-12-2020 |
| 37. | 13.09 ft | on 01-01-2016 |
| 38. | 12.91 ft | on 07-17-2021 |
| 39. | 12.84 ft | on 02-21-2018 |
| 40. | 12.78 ft | on 01-06-2004 |
| 41. | 12.73 ft | on 02-21-2018 |
| 42. | 12.73 ft | on 05-22-2010 |
| 43. | 12.32 ft | on 02-01-2002 |
| 44. | 11.96 ft | on 04-11-1995 |
| 45. | 11.87 ft | on 01-18-2012 |
| 46. | 11.87 ft | on 12-31-2005 |
| 47. | 11.78 ft | on 02-10-2001 |
| 48. | 11.17 ft | on 10-17-2001 |
| 49. | 10.80 ft | on 03-15-2016 |
| 50. | 8.55 ft | on 02-04-1987 |
| 51. | 7.49 ft | on 04-04-1931 |
Vertical Datum Table
| type | NAVD88 |
|---|---|
| major Flooding | 767.41 ft |
| moderate Flooding | 765.41 ft |
| minor Flooding | 762.41 ft |
| action | 760.41 ft |
| Latest Value | 760.56 ft |
| Gauge Zero | 748.41 ft |
Unique Local Info
Gauge zero transitioned from 748.97 NGVD29 to 748.41 NAVD88 on July 25, 2012.
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Potential River Levels Used to Estimate the Chance of Flooding and the Range of Possible River Levels |
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| 10 Day (HEFS) | 10 Day (NAEFS) | River Forecast VS. River Potential |
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Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.
Click individual graphics to enlarge.
To use the USGS flood inundation mapper tool, please visit the following web address: http://wim.usgs.gov/FIMI/FloodInundationMapper.htmlCollaborative 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.