Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

Click to hideNews Bulletins
  • The issue impacting the delivery of satellite data transmissions in the western United States has been resolved. Current data for impacted locations are now accessible from USGS web portals. The data to fill any resultant gaps in water records will be downloaded from field equipment for manual upload following the next scheduled field visit.
  • Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.
  • Full News RSS icon

Water-Year Summary for Site 02334430

Click to hide Water-Year Summary instructions and information
  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  
00065 Gage height(Mean)  

Water year 2020: 2019-10-01 to 2020-09-30

Print this page
USGS Water-Year Summary 2020
LOCATION - Lat 34°09'25", long 84°04'44" referenced to North American Datum of 1983, Gwinnett County, GA, Hydrologic Unit 03130001, on right bank 1,200 feet downstream from Buford Dam, 2.4 miles upstream from bridge at GA SR 20, 4.0 miles Northwest of Buford, GA, and at river mile 348.1.
DRAINAGE AREA - 1,040 mi².
REVISIONS HISTORY - WRD GA-79-1: 1972-78 (maximum gage heights only). WRD GA-90-1: 1986-89 (maximum gage heights only). See also PERIOD OF RECORD.
DISCHARGE: July to December 1901 (figures of daily discharge for the months of August and December, published in WSP 197, are unreliable and should not be used), October 1941 to current year. Prior to October 1971, published as 02334500, Chattahoochee River "near Buford". Monthly discharge only for July to December 1901, October 1941 to January 1942, published in WSP 1304.
GAGE HEIGHT: October 1998 to current year.
GAGE - Satellite telemetry with a water-stage recorder. Datum of gage is 912.1 feet above the North American Vertical Datum (NAVD) of 1988 (leveling by Global Positioning System equipment). From June 24 to December 21, 1901, and January 27, 1942, to December 3, 1944, a non-recording gage was installed, and from December 4, 1944, to December 31, 1947, a water-stage recorder was located at site 2.5 miles downstream, and from January 1, 1948, to September 30, 1971, a water-stage recorder was located at site 2.4 miles downstream, all at different datum.
COOPERATION - U.S. Army Corps of Engineers, Mobile District. Georgia Department of Natural Resources, Environmental Protection Division.
For period 10/01/2013-10/21/2019: Discharge record good, except for days of estimated discharge, which are poor. Gage-height record good.
For period 10/22/2019-01/06/2021: Discharge record fair. Gage-height record fair.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage known since at least 1921, that of Jan. 8, 1946.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge recorded, 55,000 cfs, January 8, 1946; maximum gage-height recorded, 32.60 feet, January 8, 1946; minimum daily discharge, 262 cfs, May 18, 1958.
EXTREMES FOR PERIOD PRIOR TO REGULATION - Maximum discharge recorded, 55,000 cfs, January 8, 1946, from rating curve extended above 13,000 cfs on basis of peak flows passing upstream and downstream stations; maximum gage-height recorded, 32.60 feet, January 8, 1946, from floodmarks, at site and datum then in use.
PERIOD OF RECORD - September 1973; February 1974; August 1976; January 2004 to current year.
WATER TEMPERATURE: January 2004 to current year.
INSTRUMENTATION - Satellite telemetry with a continuous water temperature thermistor.
For period 10/01/2013-08/14/2018: Water temperature record good.
WATER TEMPERATURE: Maximum recorded, 17.6 °C, October 11, 2011; minimum recorded 5.6 °C, February 19-21, 25, 27-28, 2010.