Rivers in Georgia
Chattahoochee River at Highway 141 near Norcross
Below flood stage
2.23ftStage
Observed Sun, Sep 27, 9:15 PM EDT
- Flood stage
- 12.00 ft
- Record crest
- 27.70 ft1946
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 20.00 ft |
| Moderate flood | 16.00 ft |
| Minor flood | 12.00 ft |
| Action | 10.00 ft |
- 28.00 ftRecord flooding not seen since January 1946 will inundate property along the river upstream and downstream from the gage on Medlock Bridge Road. Flood waters submerge numerous homes to their roofs in the area including those on Marsh Park Drive...Vista Bluff Drive...Hershinger Close and Saint Georgen Common. The Medlock Bridge Road will be under 4 feet of water. The Atlanta Athletic Club Golf Course will be flooded up to 14 feet deep.
- 24.00 ftMajor flooding expands with widespread inundation of property along the river upstream and downstream from the gage on Medlock Bridge Road. Flood waters submerge numerous homes and access roads in the area including those on Marsh Park Drive...Vista Bluff Drive...Hershinger Close and Saint Georgen Common. The Medlock Bridge Road will begin to flood. Large portions of the Atlanta Athletic Club Golf Course will be flooded up to 10 feet deep.
- 20.00 ftMajor flooding begins with widespread inundation of property along the river upstream and downstream from the gage on Medlock Bridge Road. Flood waters affect numerous homes in the area including those on Marsh Park Drive...Vista Bluff Drive...Hershinger Close and Saint Georgen Common. Some access roads will be flooded. The Medlock Bridge Park in the Chattahoochee River National Recreation Area and large portions of the Atlanta Athletic Club Golf Course will be flooded up to 8 feet deep.
- 18.00 ftSignificant flooding expands into the woodlands and numerous residential yards along the river upstream and downstream from the gage on Medlock Bridge Road. Flood waters affect several homes in the area including those on Marsh Park Drive...Vista Bluff Drive...Hershinger Close and Saint Georgen Common. Some access roads will begin to flood. Portions of the Medlock Bridge Park in the Chattahoochee River National Recreation Area and the Atlanta Athletic Club Golf Course will be flooded up to 6 feet deep.
- 16.00 ftModerate flooding begins. Significant flooding occurs in the woodlands and numerous residential backyards along the river upstream and downstream from the gage on Georgia Highway 141 or Medlock Bridge Road. Flood waters begin to enter some homes on Marsh Park Drive...Vista Bluff Drive...Hershinger Close and Saint Georgen Common. Portions of the Medlock Bridge Park in the Chattahoochee River National Recreation Area and the Atlanta Athletic Club Golf Course will be flooded up to 4 feet deep.
- 14.00 ftMinor flooding expands into the woodlands and numerous residential backyards along the river upstream and downstream from the gage on Georgia Highway 141 or Medlock Bridge Road. Portions of the Medlock Bridge Park in the Chattahoochee River National Recreation Area and the Atlanta Athletic Club Golf Course will be flooded up to two feet deep.
- 12.00 ftFlood Stage is reached. Minor flooding begins in the woodlands and numerous residential backyards of homes along the river upstream and downstream from the gage on Georgia Highway 141 or Medlock Bridge Road. Flood waters will begin to cover a parking lot at Medlock Bridge Park in the Chattahoochee River National Recreation Area. Low lying portions of the Atlanta Athletic Club Golf Course will begin to flood.
- 9.00 ftBankfull conditions occur along the river upstream and downstream from the gage at Georgia Highway 141 or Medlock Bridge Road. The water level reaches the top of the boat ramp of the Medlock Bridge Park in the Chattahoochee River National Recreation Area.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | Under 5% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 15, 2026.
Crest history
50 crests on NOAA’s list since 1886.
| # | Date | Stage |
|---|---|---|
| 1 | January 8, 1946 | 27.70 ft |
| 2 | December 10, 1919 | 27.10 ft |
| 3 | December 13, 1919 | 27.10 ft |
| 4 | April 1, 1886 | 23.40 ft |
| 5 | April 7, 1936 | 22.20 ft |
| 6 | March 12, 1952 | 22.00 ft |
| 7 | December 30, 1915 | 21.40 ft |
| 8 | December 23, 1918 | 21.30 ft |
| 9 | March 24, 1903 | 20.60 ft |
| 10 | February 10, 1921 | 20.40 ft |
| 11 | January 7, 1949 | 20.20 ft |
| 12 | January 21, 1947 | 20.10 ft |
| 13 | January 17, 1954 | 20.00 ft |
| 14 | December 29, 1932 | 20.00 ft |
| 15 | March 5, 1934 | 19.90 ft |
| 16 | September 27, 1929 | 19.60 ft |
| 17 | April 16, 1912 | 19.30 ft |
| 18 | January 4, 1937 | 18.10 ft |
| 19 | August 15, 1940 | 18.00 ft |
| 20 | March 30, 1944 | 18.00 ft |
| 21 | February 18, 1942 | 17.30 ft |
| 22 | March 25, 1917 | 16.90 ft |
| 23 | January 4, 1906 | 16.40 ft |
| 24 | March 14, 1909 | 16.00 ft |
| 25 | February 9, 1955 | 15.80 ft |
Most recent crests
- October 11, 2020: 14.01 ft
- May 19, 2013: 12.43 ft
- September 22, 2009: 14.51 ft
- March 16, 1973: 12.47 ft
- April 5, 1964: 13.10 ft
- November 22, 1962: 12.05 ft
- February 9, 1955: 15.80 ft
- January 17, 1954: 20.00 ft
- January 11, 1953: 15.00 ft
- March 12, 1952: 22.00 ft
Nearby
Upstream, downstream and the gauges around this one.
- UpstreamChattahoochee River at 0.76 mile upstream McGinnis Ferry near Suwanee
- DownstreamChattahoochee River at Roswell
- Crooked Creek at Norcross
- Bromolow Creek Tributary at Pond Road near Norcross
- Beaver Ruin Creek at Mitchell Road near Norcross
- Big Creek at Alpharetta
- North Fork Peachtree Creek at Graves Road near Norcross
- Dick Creek at Old Atlanta Road near Suwanee
- Sweetwater Creek (E ATL) at Club Drive near Lilburn
What this means
Forecasts by the Southeast River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. Gauge reading affected by reservoir operations. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.