USGS Water-Year Summary 2020
02207385 BIG HAYNES CREEK AT LENORA ROAD, NEAR SNELLVILLE, GA
LOCATION - Lat 33°48'55.0", long 83°59'24.5" referenced to North American Datum of 1983, Gwinnett County, GA, Hydrologic Unit 03070103, at Lenora Road, 5.5 miles southeast of Snellville.
DRAINAGE AREA - 17.3 mi².
- WDR GA-04-01: daily streamflow for 2001 and 2002 water years.
PERIOD OF RECORD -
DISCHARGE: February 2001 to current year.
GAGE-HEIGHT: February 2001 to current year.
GAGE - Satellite telemetry with a water stage recorder. Datum of gage is 860 feet above National Geodetic Vertical Datum (NGVD) of 1929 (from topographic map).
COOPERATION - Gwinnett County Department of Water Resources.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge recorded, 2,180 cfs, April 19, 2019; maximum gage-height recorded, 12.74 feet, April 19, 2019; minimum daily discharge, 1.5 cfs, estimated, July 2, 2012.
PERIOD OF RECORD - February 2001 to current year.
INSTRUMENTATION - Tipping-bucket raingage.
PERIOD OF RECORD - March 1996 to current year.
PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: February 2001 to current year.
WATER TEMPERATURE: February 2001 to current year.
TURBIDITY: February 2001 to current year.
INSTRUMENTATION - Satellite telemetry with a continuous water-quality monitor and an automatic refrigerated sampler.
EXTREMES FOR PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: Maximum recorded, 132 microsiemens, August 27, 2002; minimum recorded, 14 microsiemens, July 7, 2005.
WATER TEMPERATURE: Maximum recorded, 27.5 °C, August 9, 2007, July 25, 2010; minimum recorded, 0.7 °C, January 10, 2011.
TURBIDITY: Maximum recorded, >2,200 FNU on several days; minimum recorded, 0.6 FNU, November 2-3, 2012.