Major Flood
20 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
18 ft
Minor Flood
14 ft
Action Stage
12 ft
What Floods at Each Level
29 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.
28 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.
26 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.
24 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.
22 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.
20 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.
18 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.
16 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.
14 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.
12 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.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Sep 22, 2009 | 28.59 ft | — |
| Sep 27, 2024 | 24.13 ft | — |
| Mar 16, 1990 | 23.65 ft | 25,100 cfs |
About This Gauge
USGS Site
NWS LID
VIXG1
River
Chattahoochee River
County
Cobb, GA
Coordinates
33.8681°N, 84.4539°W
Get Flood Alerts for Chattahoochee River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Chattahoochee River at US 41 at Atlanta?
The Chattahoochee River at US 41 at Atlanta gauge is maintained by USGS (site 02335990) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Chattahoochee River at US 41 at Atlanta?
The NWS-defined flood stage for Chattahoochee River at US 41 at Atlanta is 14 feet. Action stage begins at 12 feet. Moderate flooding starts at 18 feet, and major flooding at 20 feet.
How do I get alerts when Chattahoochee River rises?
Download StormCast free on Google Play, go to River Gauges, and add Chattahoochee River at US 41 at Atlanta to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Chattahoochee River at US 41 at Atlanta gauge located?
The gauge is located in Cobb County, Georgia at coordinates 33.8681°N, 84.4539°W. USGS site number: 02335990. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Chattahoochee River
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Chattahoochee River at 14th Street at Columbus
Chattahoochee River at GA 280 near Atlanta
Chattahoochee River at Lake Sidney Lanier near Buford
Chattahoochee River at George W. Andrews Lock and Dam (USACE)
Chattahoochee River near Cornelia
Chattahoochee River near Fairburn
Chattahoochee River at W.F. George Lock and Dam
On This River
Upstream: Chattahoochee River at Powers Ferry + I-285 near Atlanta
Downstream: Chattahoochee River at Atlanta
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- Automated gauge readings are now available, courtesy of the USGS.