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USGS Water-Year Summary 2024
02342850 HANNAHATCHEE CREEK AT UNION, GA.
LOCATION - Lat 32°09'09.8", long 84°54'21.3" referenced to North American Datum of 1983, Stewart County, GA, Hydrologic Unit 03130003, 2.5 mi upstream from confluence with Colochee Creek, 9.1 mi dowstream from confluence with the Chattahoochee River, and 0.3 mi south of Union.
DRAINAGE AREA - 121 mi².
REVISIONS HISTORY - Gage datum was revised on August 26, 2021, based on an error in the determination of the gage datum.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
DISCHARGE: June 1964 to September 1965 (published as station 02342850 Hanahatchie Creek at Julia, GA). May 2008 to current year.
GAGE-HEIGHT: May 2008 to current year.
DISCHARGE: June 1964 to September 1965 (published as station 02342850 Hanahatchie Creek at Julia, GA). May 2008 to current year.
GAGE-HEIGHT: May 2008 to current year.
GAGE - Satellite transmitter with a water-stage recorder. Datum of gage is 232.87 feet above North American Vertical Datum (NAVD) of 1988. June 1964 to September 1965 recording gage at same site and different datum.
COOPERATION - Georgia Department of Natural Resources, Environmental Protection Division.
REMARKS - Gage-height records are generally good. Discharge records are generally fair except for estimated discharges, which are poor. Additional details on the accuracy of the records can be obtained by contacting the USGS South Atlantic Water Science Center at gs-w-ga_nwisweb_data_inquiries@usgs.gov.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge recorded, 9,280 cfs, December 25, 2015; maximum gage height recorded, 15.47 feet, December 25, 2015; minimum daily discharge, 5.0 cfs, June 29-30, 2012.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - May 2008 to current year.
INSTRUMENTATION - Tipping-bucket raingage.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Janaury 2000 to December 2000, January 2008 to December 2008 (discontinued).
COOPERATION - Georgia Department of Natural Resources, Environmental Protection Division.
REMARKS - Analyzing agency is represented by the five-digit code listed under USGS Water Science Center special parameter code 99920. Laboratory analyses with analyzing agency code 81330 are by the Agricultural and Environmental Services Laboratory, College of Agricultural and Environmental Sciences, The University of Georgia, Athens, Georgia; laboratory analyses with analyzing agency code 81341 are by the Laboratory Services Section, Environmental Protection Division, Georgia Department of Natural Resources. Field determinations of Discharge, Specific Conductance, pH, Water Temperature, Air Temperature, and Dissolved Oxygen are by the U.S. Geological Survey.
