USGS Water-Year Summary 2020
02380500 COOSAWATTEE RIVER NEAR ELLIJAY, GA
LOCATION - Lat 34°40'30", long 84°30'31" referenced to North American Datum of 1927, Gilmer County, GA, Hydrologic Unit 03150102, on right bank, 0.5 mi downstream from GA Route 5A, 2.5 mi downstream from confluence of Cartecay and Elijay Rivers, 7.5 mi upstream from confluence with Mountaintown Creek, and 2.0 mi southwest of Ellijay.
DRAINAGE AREA - 236 mi².
- WDR GA-80-1: Drainage area.
PERIOD OF RECORD -
DISCHARGE: Occasional low-flow measurements 1959, 1961-62 water years. Annual peaks only 1951-1963. October 1938 to December 1949, June 1963 to current year.
GAGE HEIGHT: Occasional low-flow measurements 1959, 1961-62 water years. Annual peaks only 1951-1963. October 1998 to current year.
GAGE - Satellite telemetry with a water-stage recorder. Datum of gage is 1216.0 feet above North American Vertical Datum (NAVD) of 1988 (leveling by Global Navigation Satellite System equipment using GEOID12A). Prior to June 10, 1940, a non-recording gage was located at site 0.5 miles upstream at datum 8.04 feet higher.
COOPERATION - U.S. Army Corps of Engineers, Mobile District.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage known since at least 1938, 20.7 feet, March 19, 1951, from flood mark.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge recorded, 17,000 cfs, October 4, 1964; maximum gage height recorded, 17.63 feet, October 4, 1964; minimum daily discharge, 48 cfs, October 3, 2007.
PERIOD OF RECORD - May 2001 to current year.
INSTRUMENTATION - Tipping-bucket raingage.
PERIOD OF RECORD - May 1941, May 1963 to September 1976, October 1977 to September 1984, January 1996 to December 1996, January 2002 to current year.
COOPERATION - Georgia Department of Natural Resources, Environmental Protection Division.