Nancy Creek at Johnson Ferry Road near Chamblee
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
- Upstream gauge unavailableWarning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.
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Observed (OBS) 04/07/2025 4:30 AM EDTCATEGORY STAGE 
Major Flooding 24 ft Moderate Flooding 20 ft Minor Flooding 16 ft Action 15 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
- 24 - Record flooding continues upstream and downstream from the gage on Johnson Ferry Road. A large portion of the Marist High School campus will be flooded...including parking lots...the baseball and football fields...and the parking garage under the gym. Major flooding will continue downstream in Fulton County to Rickenbacker Drive. Many homes on East Powderhorn Road...Hitching Post Trail...Pine Forest Road...Valley Brook Drive and Valley Green Drive will flood. The impacts will be similar to September 2004.
- 23 - Record flooding occurs upstream and downstream from the gage on Johnson Ferry Road. A large portion of the Marist High School campus will be flooded...including parking lots...the baseball and football fields...and the parking garage under the gym. Major flooding will continue downstream in Fulton County to Rickenbacker Drive. Many homes on East Powderhorn Road...Hitching Post Trail...Pine Forest Road...Valley Brook Drive and Valley Green Drive will flood. The impacts will be similar to September 2009.
- 22 - Moderate flooding expands into the woodlands and athletic fields upstream and downstream from the gage on Johnson Ferry Road. A large portion of the Marist High School campus will be flooded...including parking lots...baseball fields...and the parking garage under the gym. Major flooding will develop downstream in Fulton County to Rickenbacker Drive. Many homes on East Powderhorn Road...Hitching Post Trail...Pine Forest Road...Valley Brook Drive and Valley Green Drive will be flooded.
Gauge Info
| Coordinates | 33.8978, -84.3456 |
| RFC | SERFC |
| State | GA |
| WFO | FFC |
| County | De Kalb |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 02336340 |
Gauge Location
Recent Crests
| 1. | 17.84 ft | on 09-27-2024 | (P) |
| 2. | 16.48 ft | on 08-30-2023 | |
| 3. | 17.21 ft | on 10-11-2020 | |
| 4. | 16.19 ft | on 12-28-2018 | |
| 5. | 17.61 ft | on 08-09-2017 |
Recent Crests
| 1. | 17.84 ft | on 09-27-2024 | (P) |
| 2. | 16.48 ft | on 08-30-2023 | |
| 3. | 17.21 ft | on 10-11-2020 | |
| 4. | 16.19 ft | on 12-28-2018 | |
| 5. | 17.61 ft | on 08-09-2017 | |
| 6. | 16.20 ft | on 06-06-2013 | |
| 7. | 22.50 ft | on 09-21-2009 |
Historic Crests
| 1. | 22.50 ft | on 09-21-2009 | |
| 2. | 17.84 ft | on 09-27-2024 | (P) |
| 3. | 17.61 ft | on 08-09-2017 | |
| 4. | 17.21 ft | on 10-11-2020 | |
| 5. | 16.48 ft | on 08-30-2023 |
Historic Crests
| 1. | 22.50 ft | on 09-21-2009 | |
| 2. | 17.84 ft | on 09-27-2024 | (P) |
| 3. | 17.61 ft | on 08-09-2017 | |
| 4. | 17.21 ft | on 10-11-2020 | |
| 5. | 16.48 ft | on 08-30-2023 | |
| 6. | 16.20 ft | on 06-06-2013 | |
| 7. | 16.19 ft | on 12-28-2018 |
Low Water Records
Low Water Records
Vertical Datum Table
| type | NAVD88 | STND |
|---|---|---|
| major Flooding | 861.47 ft | 24.00 ft |
| moderate Flooding | 857.47 ft | 20.00 ft |
| minor Flooding | 853.47 ft | 16.00 ft |
| action | 852.47 ft | 15.00 ft |
| Latest Value | 843.54 ft | 6.07 ft |
| Gauge Zero | 837.47 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.