Chattahoochee River at US 41 at Atlanta
Flood levels
Official flood levels at this gauge: action stage begins at 12.0 ft; minor flooding begins at 14.0 ft; moderate flooding begins at 18.0 ft; major flooding begins at 20.0 ft.
| Action stage | 12.0 ft |
|---|---|
| Minor flooding | 14.0 ft |
| Moderate flooding | 18.0 ft |
| Major flooding | 20.0 ft |
Highest recorded crests
- 28.6 ft on Sep 22, 2009 (historic crest)
- 24.1 ft on Sep 27, 2024 (historic crest)
- 23.6 ft on Mar 17, 1990 (historic crest)
- 23.0 ft on Apr 13, 1979 (historic crest)
What the water does
National Weather Service impact statements for this gauge, in the Weather Service's own words.
| 12.0 ft | Bankfull conditions occur in the woodlands and low lying portions of the Chattahoochee National Recreation Area along the river upstream and downstream from the gage on Cobb Parkway. |
|---|---|
| 14.0 ft | Flood stage is reached. Minor flooding occurs in the woodlands and portions of the Chattahoochee National Recreation Area along the river upstream and downstream from the gage on Cobb Parkway. The flood waters will reach the top of the concrete boat ramp in the recreation area. |
| 16.0 ft | Minor flooding expands in the woodlands and affects large portions of the Chattahoochee National Recreation Area along the river upstream and downstream from the gage on Cobb Parkway. The flood waters will be around one foot deep over portions of the access road to the recreation area. |
| 18.0 ft | Moderate flooding begins. Significant flooding occurs in the woodlands and affects large portions of the Chattahoochee National Recreation Area along the river upstream and downstream from the gage on Cobb Parkway. The flood waters will be around 3 feet deep over portions of the access road to the recreation area. Portions of the parking lot will begin to flood. |
| 20.0 ft | Major flooding begins. Widespread inundation flooding occurs in the woodlands and large portions of the Chattahoochee National Recreation Area along the river upstream and downstream from the gage on Cobb Parkway. The flood waters will be around 5 feet deep over portions of the access road to the recreation area. Portions of the parking lot will be under two feet of water. The restrooms at the recreation area will begin to flood. |
| 22.0 ft | Major flooding continues with widespread inundation flooding of the woodlands and large portions of the Chattahoochee National Recreation Area along the river upstream and downstream from the gage on Cobb Parkway. The flood waters will be around 7 feet deep over portions of the access road to the recreation area. Portions of the parking lot will be under 4 feet of water. The restrooms at the recreation area will be flooded two feet deep. |
| 24.0 ft | Major flooding continues with widespread inundation flooding of the woodlands and large portions of the Chattahoochee National Recreation Area along the river upstream and downstream from the gage on Cobb Parkway. The flood waters will be around 9 feet deep over portions of the access road to the recreation area. Portions of the parking lot will be under 6 feet of water. The restrooms at the recreation area will be flooded 4 feet deep. |
| 26.0 ft | Major flooding expands with widespread inundation flooding of the woodlands and large portions of the Chattahoochee National Recreation Area along the river upstream and downstream from the gage on Cobb Parkway. The flood waters will be around 11 feet deep over portions of the access road to the recreation area. Portions of the parking lot will be under 8 feet of water. The restrooms at the recreation area will be flooded 6 feet deep. |
| 28.0 ft | Major flooding expands with widespread inundation flooding of the woodlands and large portions of the Chattahoochee National Recreation Area upstream and downstream from the gage on Cobb Parkway. The flood waters will be around 13 feet deep over portions of the access road to the recreation area. Portions of the parking lot will be under 10 feet of water. The restrooms at the recreation area will be flooded 8 feet deep with only the roof exposed. This will be similar to the September 2009 flood event. |
| 29.0 ft | Record flooding occurs with widespread inundation flooding of the woodlands and large portions of the Chattahoochee National Recreation Area upstream and downstream from the gage on Cobb Parkway. The flood waters will be around 14 feet deep over portions of the access road to the recreation area. Portions of the parking lot will be under 11 feet of water. The restrooms at the recreation area will be flooded 9 feet deep with only the roof exposed. This will be worse than the September 2009 flood event. |
Forecast office: NWS Peachtree City · River Forecast Center: Southeast River Forecast Center.
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Nearby stations and gauges
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