TidalMapChattahoochee River near Norcross, GA Water Level Today
NWS river forecast
| When | Stage | Flow |
|---|
Forecast from the NOAA National Water Prediction Service. Issued a few times a day and only while a forecast is active. Not for navigation.
Last 30 days
About this gauge
USGS gauge 02335000 sits on the Chattahoochee River and reads everything draining 1,170 square miles of the Upper Chattahoochee basin. Its datum sits 878 feet above sea level NAVD88. Daily flow has been on record here since 1957, 70 years of it.
Where this gauge sits in the drainage
Five gauged sites sit upstream of here. The closest is Chattahoochee River 0.76 Mi US Mcginnis Fy Suwanee GA, reading 1,090 square miles. This gauge adds the 80 square miles that drain in between. Downstream the next reading comes from Chattahoochee River above Roswell, GA at 1,220 square miles, so what passes this gauge is about 96% of the water measured there. Water passing here goes on to Chattahoochee River below Morgan Falls Dam, GA, Chatt River at Powers Fy and I-285 near Atlanta, GA and Chattahoochee River at US 41, at Atlanta, GA.
Normal flows here
The Chattahoochee River runs a median of 1,600 cfs at this gauge across 70 years of record. August is the fullest month at a median 1,870 cfs, and December the leanest at 1,360 cfs. The highest daily mean on record is 11,200 cfs in 1964, and the lowest is 351 cfs in 1957.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 1,410 cfs | 88% |
| Feb | 1,440 cfs | 90% |
| Mar | 1,740 cfs | 109% |
| Apr | 1,815 cfs | 113% |
| May | 1,860 cfs | 116% |
| Jun | 1,655 cfs | 103% |
| Jul | 1,650 cfs | 103% |
| Aug | 1,870 cfs | 117% |
| Sep | 1,660 cfs | 104% |
| Oct | 1,490 cfs | 93% |
| Nov | 1,470 cfs | 92% |
| Dec | 1,360 cfs | 85% |
Medians from the USGS daily-statistics record, 1957 to 2026. A month at 100% is running at its own long-term median.
Flood stages and record crests
The Chattahoochee River reaches flood stage at this gauge at 12 feet. NWS starts watching it at 10 feet. The highest crest on record is 27.7 feet, in January 1946.
| Category | Gage height |
|---|---|
| Action | 10 ft |
| Minor flooding | 12 ft |
| Moderate flooding | 16 ft |
| Major flooding | 20 ft |
| When | Crest |
|---|---|
| January 1946 | 27.7 ft |
| December 1919 | 27.1 ft |
| December 1919 | 27.1 ft |
| April 1886 | 23.4 ft |
| April 1936 | 22.2 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge NCRG1. Stages are gage height, not depth. Not for navigation.
Dams near this gauge
The Army Corps' Morgan Falls Dam sits 11 miles from this gauge and its releases set what this gauge reads. The Corps publishes no release schedule for this project; its last observed release and elevations load below.
- Morgan Falls Dam 11 miles
- Buford Dam 13 miles
Nearby river gauges
- Crooked Creek near Norcross, GA
- Beaver Ruin Creek at Mitchell Rd, near Norcross, GA
- Big Creek near Alpharetta, GA
- N.f Peachtree Creek at Graves Rd, near Doraville,ga
- Dick Creek at Old Atlanta Rd, near Suwanee, GA
- Sweetwater Creek at Club Drive near Lilburn, GA
- Jackson Creek Tributary 1 at Williams Rd, near Lilburn,ga
- Chattahoochee River 0.76 Mi US Mcginnis Fy Suwanee GA
- Jackson Creek at Angels Lane, near Lilburn, GA
- Chattahoochee River above Roswell, GA
- Suwanee Creek at Suwanee, GA
- Sweetwater Creek at US 29, near Luxomni, GA
Live streamflow and gage height: USGS gauge 02335000. Percentile context computed against the gauge's period of record. Not for navigation.
Open Chattahoochee River near Norcross, GA on the live chart →
River pins, dam-release overlays and wadability lines live in the app, start a free TidalMap trial.