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Water-Year Summary for Site 02206136

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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Available Parameters
00045 Precipitation(Sum)  
00065 Gage height(Mean)  

Water year 2022: 2021-10-01 to 2022-09-30

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USGS Water-Year Summary 2022
LOCATION - Lat 33°53'19", long 84°10'59" referenced to North American Datum of 1927, Gwinnett County, GA, Hydrologic Unit 03070103, at culvert on Williams Road, 2.6 miles west of Lilburn.
DRAINAGE AREA - 0.33 mi².
REVISIONS HISTORY - The gage datum from May 23, 1994 to March 2006 was destroyed. The gage was reestablished May 15, 2006 with a new gage datum. The records are not equivalent.
PERIOD OF RECORD - Nov. 1986 to Feb. 1993, May 1994 to Mar. 2006, May 2006 to current year.
GAGE - Water-stage recorder with satellite telemetry, and a crest-stage gage. Datum of gage is 936.68 ft above NAVD 88. The NAVD 88 datum of the gage was determined from two Level II GNSS, single-base static surveys of RM 14 (REF FRAME: NAD_83(2011)(EPOCH:2010.0000), GEOID18), completed by USGS personnel on May 21 and 26, 2020. RM 14 was tied to the gage datum via conventional levels completed by USGS personnel on May 28, 2020. Prior to December 3, 2020, the manuscript stated the datum of gage was 920 ft above NGVD of 1929 as determined via topographic map by USGS.
COOPERATION - Gwinnett County Department of Water Resources
For period: 03/09/2020-12/18/2020: Gage height records fair.
EXTREMES FOR PERIOD OF RECORD - Maximum stage, 8.57 feet, June 17, 2003; maximum discharge, 214 cfs, June 17, 2003 (prior to May 15, 2006 and new gage datum). Maximum stage, 20.13 feet, September 21, 2009; maximum discharge, undetermined (new gage datum May 15, 2006 to current year).
PERIOD OF RECORD - March 2020 to current.
INSTRUMENTATION - Tipping bucket raingage.