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This probabilistic forecast is issued by the Southeast River Forecast Center.
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About this graph
Forecasts are not available for the Chattahoochee River at Lake Lanier. Only observed stages are available for this point.
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Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 1085
Action Stage: 1071
Low Stage (in feet): -9999

Historic Crests
(1) 1,077.15 ft on 04/14/1964
(2) 1,076.20 ft on 04/05/1977
(3) 1,076.16 ft on 02/24/2019
(4) 1,075.99 ft on 04/15/1979
(5) 1,075.75 ft on 04/01/1976
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 1,076.16 ft on 02/24/2019
(2) 1,073.58 ft on 09/19/2004
(3) 1,073.79 ft on 05/07/2003
(4) 1,074.57 ft on 02/03/1996
(5) 1,073.58 ft on 08/18/1994
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 1,050.75 ft on 12/28/2007
(2) 1,052.66 ft on 12/23/1981
(3) 1,054.85 ft on 10/08/1986
Show More Low Water Records
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Gauge LocationGauge Map Marker
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Low Water Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
1000-1500 cfs Advantageous for recreational opportunities and resources supported by the river as it flows through the Chattahoochee River National Recreational Area (from Buford Dam to Peachtree Creek).
1500-2000 cfs Habitat values for trout peak at river flows less than 2,000 cfs.
2000-12000 Habitat values for trout decline at river flow increases from 2,000 cfs to 12,000 cfs.
3800 cfs Normal, 1 large unit operating-outflow 3,800cfs
450-500 cfs Flow level of 450 cfs required from Buford Dam plus additional flows from tributaries between Buford Dam and Peachtree Creek should achieve the required flow of 750 cfs on the Chattahoochee River near the merger of Peachtree Creek.
500-538 cfs The stretch of the river from Buford Dam to Georgia Highway 20 is barely runnable.
538-650 cfs Buford Trout Hatchery water intake still operable when instantaneous flow is in this range.
650-750 cfs Temporary reduction in minimum flow requirement. Permitted from Nov 14, 2008 through April 30, 2009. Flow reduction can occur during the cooler time of the year without adversely affecting water quality.
750-850 cfs Standard minimum flow requirement for operations at Buford Dam.
8000 cfs Normal, 2 large units operating-outflow 8,000cfs.
8200 cfs Normal, 3 units operating-outflow 8,200cfs.
850-1000 cfs Minimum flow to paddle the 56.2 miles from Buford Dam to Sweetwater Creek (Metro Hooch). Class I to II.

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
The summer pool level of 1071 feet MSL will be considered the action stage or bankfull on the hydrograph.
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Peachtree City/Atlanta Weather Forecast Office
4 Falcon Drive
Peachtree City, GA 30269
(770) 486-1133
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Page last modified: 2-Nov-2020 7:30 PM
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