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USGS Water-Year Summary 2024
02343805 CHATTAHOOCHEE RIVER AT MILE 46 NEAR COLUMBIA, ALA
LOCATION - Lat 31°14'56.7", long 85°06'23.8" referenced to North American Datum of 1983, 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.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
DISCHARGE: September 2009 to July 2019.
GAGE-HEIGHT: September 2009 to July 2019.
WATER VELOCITY: September 2009 to July 2019.
DISCHARGE: September 2009 to July 2019.
GAGE-HEIGHT: September 2009 to July 2019.
WATER VELOCITY: September 2009 to July 2019.
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.
REMARKS -
For Period: 10/01/2013 - 09/30/2014: Discharge records fair, except for those with Estimated Discharge which are poor. Gage Height records good. Water Velocity records fair.
For Period: 10/01/2014 - 01/22/2017: Discharge records poor. Gage Height records good. Water Velocity records poor.
For Period: 01/23/2017 - 08/08/2017: Discharge records fair. Gage Height records fair. Water Velocity records fair.
For Period: 08/08/2017 - 10/17/2017: Discharge records good. Gage Height records good. Water Velocity records good.
For Period: 10/17/2017 - 02/14/2018: Discharge records fair, except for those with Estimated Discharge which are poor. Gage Height records fair. Water Velocity records fair.
For Period: 02/14/2018 - 10/02/2019: Discharge records fair, except for those with Estimated Discharge which are poor. Gage Height records fair. Water Velocity records good.
For Period: 10/01/2013 - 09/30/2014: Discharge records fair, except for those with Estimated Discharge which are poor. Gage Height records good. Water Velocity records fair.
For Period: 10/01/2014 - 01/22/2017: Discharge records poor. Gage Height records good. Water Velocity records poor.
For Period: 01/23/2017 - 08/08/2017: Discharge records fair. Gage Height records fair. Water Velocity records fair.
For Period: 08/08/2017 - 10/17/2017: Discharge records good. Gage Height records good. Water Velocity records good.
For Period: 10/17/2017 - 02/14/2018: Discharge records fair, except for those with Estimated Discharge which are poor. Gage Height records fair. Water Velocity records fair.
For Period: 02/14/2018 - 10/02/2019: Discharge records fair, except for those with Estimated Discharge which are poor. Gage Height records fair. Water Velocity records good.
Water velocity data represent water velocity at the downstream cross-section of the bridge with positive values in the downstream direction. Flow regulated by Lake Sidney Lanier, West Point Lake, Lake Harding, Walter F. George Lake, and George W. Andrews Reservoir.
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.
WATER-QUALITY RECORDS
EXTREMES FOR PERIOD OF RECORD -
SPECIFIC CONDUCTANCE: Maximum Recorded, 131 uS/cm, October 9, 2017, Minimum Recorded 50 uS/cm April 28, 2020.
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, 3.0 mg/L, May 19, 2021.
