USGS Water-Year Summary 2020
02335790 WILLEO CREEK AT GA 120 NEAR ROSWELL, GA
LOCATION - Lat 34°00'10", long 84°23'40" referenced to North American Datum of 1927, Fulton County, GA, Hydrologic Unit 03130001, on downstream side of bridge on Roswell Road, 3.59 miles southwest of Roswell, 1.05 miles from confluence of Chattahoochee River.
DRAINAGE AREA - 16.1 mi².
PERIOD OF RECORD -
DISCHARGE: May 2007 to current year.
GAGE HEIGHT: May 2007 to current year.
GAGE - Satellite telemetry with a water-stage recorder and a rain gage tipping bucket. Datum of gage is 856.2 feet above North American Vertical Datum (NAVD) of 1988 (leveling by Global Navigation Satellite System equipment using GEOID12A).
COOPERATION - Cobb County Water System.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge recorded, 6,200 cfs, September 21, 2009, from rating curve extended above 2,000 cfs; maximum gage-height recorded, 14.70 feet, September 21, 2009; minimum daily discharge, 0.14 cfs, estimated, August 27-September 4, 2011.
PERIOD OF RECORD - May 2007 to current year.
INSTRUMENTATION - Tipping-bucket raingage.