Nancy Creek at Johnson Ferry Road near Chamblee
Flood levels
Official flood levels at this gauge: action stage begins at 15.0 ft; minor flooding begins at 16.0 ft; moderate flooding begins at 20.0 ft; major flooding begins at 24.0 ft.
| Action stage | 15.0 ft |
|---|---|
| Minor flooding | 16.0 ft |
| Moderate flooding | 20.0 ft |
| Major flooding | 24.0 ft |
Highest recorded crests
- 22.5 ft on Sep 21, 2009 (historic crest)
- 17.8 ft on Sep 27, 2024 (historic crest)
- 17.6 ft on Aug 9, 2017 (historic crest)
- 17.2 ft on Oct 11, 2020 (historic crest)
What the water does
National Weather Service impact statements for this gauge, in the Weather Service's own words.
| 15.0 ft | Bankfull conditions are reached upstream and downstream from the gage on Johnson Ferry Road. Water begins to flow into low areas of the woodlands and athletic fields near the creek. The water level will reach the bottom of the pedestrian and vehicular bridges to the visitor parking lots on the Marist High School campus. |
|---|---|
| 16.0 ft | Flood stage is reached. Minor flooding of woodlands and athletic fields occurs upstream and downstream from the gage on Johnson Ferry Road. The water level will be hitting the pedestrian and vehicular bridges to the visitor parking lots on the Marist High School campus. This may cause some backwater and erosion eddies to form to the sides of the bridges. Minor flooding of residential yards will likely begin downstream to Rickenbacker Drive. |
| 17.0 ft | Minor flooding continues of woodlands and athletic fields upstream and downstream from the gage on Johnson Ferry Road. The water will begin to flow over the pedestrian and vehicular bridges to the visitor parking lots on the Marist High School campus. The student parking lot will begin to flood. Minor flooding of residential yards will continue downstream to Rickenbacker Drive. |
| 18.0 ft | Minor flooding continues to expand into the woodlands and athletic fields upstream and downstream from the gage on Johnson Ferry Road. The water will be around two feet over the pedestrian and vehicular bridges to the visitor parking lots on the Marist High School campus. The student parking lot will be flooded and the baseball fields will begin to flood. Minor flooding of residential yards will continue downstream to Rickenbacker Drive. |
| 19.0 ft | Minor flooding expands further into the woodlands and athletic fields upstream and downstream from the gage on Johnson Ferry Road. The water will be around 3 feet over the pedestrian and vehicular bridges to the visitor parking lots on the Marist High School campus. The student parking lot and portions of the baseball fields will be flooded with 1 to 2 feet of water. Moderate flooding develops in residential yards downstream to Rickenbacker Drive. Some crawl spaces or foundations of homes may flood. |
| 20.0 ft | Moderate flooding begins in the woodlands and athletic fields upstream and downstream from the gage on Johnson Ferry Road. The pedestrian and vehicular bridges to the visitor parking lots on the Marist High School campus will be inundated. The student parking lot and baseball fields will be flooded with 1 to 3 feet of water. Backed up storm drains will likely flood the parking garage under the gym. Moderate flooding continues downstream to Rickenbacker Drive. Some homes will begin to flood near the creek. |
| 22.0 ft | 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. |
| 23.0 ft | 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. |
| 24.0 ft | 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. |
Forecast office: NWS Peachtree City · River Forecast Center: Southeast River Forecast Center.
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Nearby stations and gauges
- Nancy Creek at Rickenbacker Drive at Atlanta NWS gauge · 2.8 mi
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- North Fork Peachtree Creek at Buford Highway at Atlanta NWS gauge · 4.6 mi
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- Chattahoochee River at Powers Ferry + I-285 near Atlanta NWS gauge · 5.6 mi
- Chattahoochee River above Roswell NWS gauge · 6.3 mi