Oostanaula River at Calhoun
No watches, warnings or advisories are in effect for this area.
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.No secondary data available. Transformations for Flow data and a secondary Y axis cannot be made at this time.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 07/14/2025 11:15 PM EDTRecord: 34.1 ftCATEGORY STAGE 
Major Flooding 35 ft Moderate Flooding 30 ft Minor Flooding 21 ft Action 18 ft Reliability of the Forecast:
NOTE: Forecasts are not available. Only observed stages are available for this point.
Automated gauge readings are now available, courtesy of the USGS.
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
- 37 - Near record flooding occurs with widespread innundation flooding in the woodlands...fields and pastures upstream and downstream from the gage behind the water treatment plant off Mauldin Road. Flood waters up to 8 feet deep will be affecting the athletic fields at the Harris River Park on Mauldin Road and additional athletic fields near the boat ramp off the Georgia Highway 136 Connector. The water level will reach the bottom of the North River Street bridge and begin to flood portions of the road.
- 35 - Major flooding begins. Widespread innundation flooding occurs in the woodlands...fields and pastures upstream and downstream from the gage behind the water treatment plant off Mauldin Road. Flood waters up to 6 feet deep will be affecting the athletic fields at the Harris River Park on Mauldin Road and additional athletic fields near the boat ramp off the Georgia Highway 136 Connector. The water level will be approaching the foundation of a textile mill in Calhoun.
- 34 - Significant flooding continues to expand further into the woodlands...fields and pastures upstream and downstream from the gage behind the water treatment plant off Mauldin Road. A boat ramp and small parking lot on the upstream and right bank side of the Georgia Highway 136 Connector will be under at least 13 feet of water. Flood waters up to 4 feet deep will be affecting the athletic fields at the Harris River Park on Mauldin Road and additional athletic fields near the boat ramp.
Gauge Info
| Coordinates | 34.5189, -84.9544 |
| RFC | SERFC |
| State | GA |
| WFO | FFC |
| County | Gordon |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 02387520 |
Gauge Location
Recent Crests
| 1. | 21.83 ft | on 04-09-2025 |
| 2. | 21.60 ft | on 02-14-2025 |
| 3. | 22.54 ft | on 05-11-2024 |
| 4. | 7.05 ft | on 01-04-2023 |
| 5. | 22.50 ft | on 02-06-2022 |
Recent Crests
| 1. | 21.83 ft | on 04-09-2025 |
| 2. | 21.60 ft | on 02-14-2025 |
| 3. | 22.54 ft | on 05-11-2024 |
| 4. | 7.05 ft | on 01-04-2023 |
| 5. | 22.50 ft | on 02-06-2022 |
| 6. | 21.68 ft | on 09-04-2021 |
| 7. | 28.12 ft | on 03-28-2021 |
| 8. | 21.26 ft | on 03-21-2021 |
| 9. | 24.43 ft | on 04-16-2020 |
| 10. | 24.35 ft | on 03-28-2020 |
| 11. | 25.64 ft | on 02-09-2020 |
| 12. | 21.08 ft | on 03-06-2019 |
| 13. | 28.00 ft | on 02-24-2019 |
| 14. | 21.01 ft | on 12-29-2018 |
| 15. | 21.93 ft | on 12-10-2018 |
| 16. | 22.36 ft | on 11-16-2018 |
| 17. | 21.28 ft | on 11-14-2018 |
| 18. | 21.47 ft | on 03-04-2018 |
| 19. | 21.91 ft | on 02-13-2018 |
| 20. | 22.22 ft | on 02-25-2016 |
| 21. | 29.97 ft | on 12-28-2015 |
| 22. | 23.51 ft | on 12-03-2015 |
| 23. | 21.93 ft | on 04-09-2014 |
| 24. | 25.47 ft | on 05-09-2013 |
| 25. | 22.01 ft | on 04-30-2013 |
| 26. | 25.12 ft | on 01-19-2013 |
| 27. | 22.59 ft | on 03-11-2011 |
| 28. | 21.46 ft | on 02-07-2010 |
| 29. | 21.00 ft | on 12-10-2009 |
| 30. | 22.56 ft | on 11-12-2009 |
| 31. | 25.74 ft | on 01-09-2009 |
| 32. | 20.23 ft | on 03-21-2001 |
| 33. | 25.57 ft | on 04-06-2000 |
| 34. | 24.22 ft | on 02-23-1991 |
| 35. | 34.15 ft | on 02-19-1990 |
| 36. | 25.16 ft | on 03-07-1989 |
| 37. | 18.38 ft | on 01-21-1988 |
| 38. | 24.73 ft | on 03-02-1987 |
| 39. | 13.89 ft | on 02-18-1986 |
| 40. | 19.72 ft | on 02-02-1985 |
| 41. | 23.50 ft | on 05-07-1984 |
| 42. | 23.86 ft | on 04-10-1983 |
| 43. | 29.10 ft | on 01-06-1982 |
| 44. | 18.20 ft | on 03-31-1981 |
| 45. | 29.71 ft | on 03-24-1980 |
Historic Crests
| 1. | 34.15 ft | on 02-19-1990 |
| 2. | 29.97 ft | on 12-28-2015 |
| 3. | 29.71 ft | on 03-24-1980 |
| 4. | 29.10 ft | on 01-06-1982 |
| 5. | 28.12 ft | on 03-28-2021 |
Historic Crests
| 1. | 34.15 ft | on 02-19-1990 |
| 2. | 29.97 ft | on 12-28-2015 |
| 3. | 29.71 ft | on 03-24-1980 |
| 4. | 29.10 ft | on 01-06-1982 |
| 5. | 28.12 ft | on 03-28-2021 |
| 6. | 28.00 ft | on 02-24-2019 |
| 7. | 25.74 ft | on 01-09-2009 |
| 8. | 25.64 ft | on 02-09-2020 |
| 9. | 25.57 ft | on 04-06-2000 |
| 10. | 25.47 ft | on 05-09-2013 |
| 11. | 25.16 ft | on 03-07-1989 |
| 12. | 25.12 ft | on 01-19-2013 |
| 13. | 24.73 ft | on 03-02-1987 |
| 14. | 24.43 ft | on 04-16-2020 |
| 15. | 24.35 ft | on 03-28-2020 |
| 16. | 24.22 ft | on 02-23-1991 |
| 17. | 23.86 ft | on 04-10-1983 |
| 18. | 23.51 ft | on 12-03-2015 |
| 19. | 23.50 ft | on 05-07-1984 |
| 20. | 22.59 ft | on 03-11-2011 |
| 21. | 22.56 ft | on 11-12-2009 |
| 22. | 22.54 ft | on 05-11-2024 |
| 23. | 22.50 ft | on 02-06-2022 |
| 24. | 22.36 ft | on 11-16-2018 |
| 25. | 22.22 ft | on 02-25-2016 |
| 26. | 22.01 ft | on 04-30-2013 |
| 27. | 21.93 ft | on 04-09-2014 |
| 28. | 21.93 ft | on 12-10-2018 |
| 29. | 21.91 ft | on 02-13-2018 |
| 30. | 21.83 ft | on 04-09-2025 |
| 31. | 21.68 ft | on 09-04-2021 |
| 32. | 21.60 ft | on 02-14-2025 |
| 33. | 21.47 ft | on 03-04-2018 |
| 34. | 21.46 ft | on 02-07-2010 |
| 35. | 21.28 ft | on 11-14-2018 |
| 36. | 21.26 ft | on 03-21-2021 |
| 37. | 21.08 ft | on 03-06-2019 |
| 38. | 21.01 ft | on 12-29-2018 |
| 39. | 21.00 ft | on 12-10-2009 |
| 40. | 20.23 ft | on 03-21-2001 |
| 41. | 19.72 ft | on 02-02-1985 |
| 42. | 18.38 ft | on 01-21-1988 |
| 43. | 18.20 ft | on 03-31-1981 |
| 44. | 13.89 ft | on 02-18-1986 |
| 45. | 7.05 ft | on 01-04-2023 |
Vertical Datum Table
| type | NAVD88 | STND |
|---|---|---|
| major Flooding | 630.50 ft | 35.00 ft |
| moderate Flooding | 625.50 ft | 30.00 ft |
| minor Flooding | 616.50 ft | 21.00 ft |
| action | 613.50 ft | 18.00 ft |
| Latest Value | 598.85 ft | 3.35 ft |
| Gauge Zero | 595.50 ft | 0.00 ft |
Gauge Photos
No Images Found
Probability Information
No Images Available
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.
Resources
Hydrologic Resource Links
Additional Resource Links
WFO Information
Weather Forecast Office
Peachtree City/Atlanta
4 Falcon Drive
Peachtree City, GA 30269
Official Homepage