USGS Water-Year Summary 2020
02336490 CHATTAHOOCHEE RIVER AT GA 280, NEAR ATLANTA, GA
LOCATION - Lat 33°49'01", long 84°28'48" referenced to North American Datum of 1983, Fulton County, GA, Hydrologic Unit 03130002, at Georgia Power Plant entrance at the boat ramp, 0.6 miles upstream from Norfolk-Southern Railway bridge, 1.7 miles downstream from Peachtree Creek, and at mile 298.8.
DRAINAGE AREA - 1,590 mi².
- WDR-US-2011: 2010.
PERIOD OF RECORD -
DISCHARGE: March 1981 to current year.
GAGE HEIGHT: October 1998 to current year.
GAGE - Satellite telemetry with a water-stage recorder. Datum of gage is 736.6 feet above North American Vertical Datum (NAVD) of 1988.
COOPERATION - U.S. Army Corps of Engineers, Mobile District.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of April 13, 1979, reached a stage of 30.71 feet from flood marks, discharge, 32,000 cfs.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge recorded, 42,300 cfs, September 21, 2009; maximum gage-height recorded, 35.98 feet, September 21, 2009; minimum daily discharge, 768 cfs, November 11, 2001.
PERIOD OF RECORD - May 2001 to September 2007 and October 2008 to September 2009.
INSTRUMENTATION - Tipping-bucket raingage.