USGS Water-Year Summary 2022
02343805 CHATTAHOOCHEE RIVER AT MILE 46 NEAR COLUMBIA, ALA
LOCATION - Lat 31°14'56", long 85°06'24" referenced to North American Datum of 1927, Early County, GA, Hydrologic Unit 03130004, On top of the downstream right bank approximately .5 mi downstream of the Andrews Lock and Dam, and at mile 46 from the Ga. Fl. line.
DRAINAGE AREA - 8,210 mi².
PERIOD OF RECORD -
DISCHARGE: September 2009 to current year.
GAGE-HEIGHT: September 2009 to current year.
WATER VELOCITY: September 2009 to current year.
GAGE - Satellite telemetry with a water-stage recorder and an acoustic velocity meter. Velocity data represents the average water velocity at the upstream cross-section of the bridge with positive values in the downstream direction. Datum of gage is referenced to North American Vertical Datum(NAVD) of 1988. Prior to October 1, 2010, datum of gage is referenced to National Geodetic Vertical Datum (NGVD) of 1929.
COOPERATION - Georgia Department of Natural Resources, Environmental Protection Division.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge recorded, 160,000 cfs, estimated, December 27, 2015; maximum gage-height recorded, 110.32 feet, December 16, 2009; minimum daily discharge, 526 cfs, October 15, 2016.
EXTREMES FOR PERIOD OF RECORD
SPECIFIC CONDUCTANCE: Maximum Recorded, 131 uS/cm, October 9, 2017, Minimum Recorded 55 uS/cm, January 24, 2019.
WATER TEMPERATURE: Maximum Recorded 31.7 degrees Celsius, August 14, 2019, Minimum Recorded, 6.9 degrees Celsius, January 20, 2018.
DISSOLVED OXYGEN: Maximum Recorded,13.8 mg/L, January 21, 2018 : Minimum Recorded, 4.5 mg/L, July 2, 2018.