USGS Water-Year Summary 2021
02226000 ALTAMAHA RIVER AT DOCTORTOWN, GA
LOCATION - Lat 31°39'16.8", long 81°49'39" referenced to North American Datum of 1983, Wayne County, GA, Hydrologic Unit 03070106, on right bank 60.0 feet downstream from Seaboard Coast Line Railroad bridge at Doctortown, 4.5 miles northeast of Jesup, and at mile 64.5.
DRAINAGE AREA - 13,600 mi².
- WSP 822: Drainage area.
PERIOD OF RECORD -
DISCHARGE: October 1931 to current year.
GAGE-HEIGHT: October 1991 to current year. Gage-heights collected at same site since 1925 are contained in reports of National Weather Service.
GAGE - Satellite telemetry with a water-stage recorder. Datum of gage is 23.6 feet above the North American Vertical Datum (NAVD) of 1988. Prior to September 5, 1934, a non-recording gage was installed, and from September 5, 1934 to September 30, 1975, a water-stage recorder was located at same site at datum 4.0 feet higher. Peak stages for 1925-1975 have been converted to present datum.
COOPERATION - USGS National Streamflow Information Program (NSIP).
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage known since at least 1800, 18.6 feet, at present datum, on January 23, 1925, with a discharge of 300,000 cfs taken from a rating curve extended above 180,000 cfs.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge recorded, 178,000 cfs, April 18, 1936; maximum gage-height recorded, 16.00 feet, April 18, 1936; minumum daily discharge, 1,210 cfs, September 16-19 and 21-23, 2011.
PERIOD OF RECORD - May 2002 to current year.
INSTRUMENTATION - Tipping-bucket raingage.
EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: Maximum recorded, 32.8°C, August 14, 2019; minimum recorded, 5.4°C, January 7, 2018.