USGS Water-Year Summary for Site 02207400

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	Available Parameters
	00010 Temperature, water(Mean,Max.,Min.)
	00045 Precipitation(Sum)
	00060 Discharge(Mean)
	00065 Gage height(Min.,Max.,Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Min.,Max.,Mean)
	00400 pH(Max.,Med.,Min.)
	63680 Turbidity, Form Neph(Med.,Min.,Max.)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

02207400 BRUSHY FORK CREEK AT BEAVER ROAD, NEAR LOGANVILLE, GA

LOCATION - Lat 33°49'17", long 83°56'33" referenced to North American Datum of 1983, Gwinnett County, GA, Hydrologic Unit 03070103, on Beaver Road, 2.6 miles southwest of Loganville, and 3.4 miles upstream of Big Haynes Creek.

DRAINAGE AREA - 8.18 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD -
DISCHARGE: March 2001 to current year.
GAGE-HEIGHT: March 2001 to current year.

GAGE - Satellite telemetry with a water stage recorder. Datum of gage is 884.53 feet above NAVD88.

COOPERATION - Gwinnett County Department of Water Resources.

REMARKS - Gage-height records are generally good. Discharge records are generally fair except for estimated discharges, which are poor. Additional details on the accuracy of the records can be obtained by contacting the USGS South Atlantic Water Science Center at gs-w-ga_nwisweb_data_inquiries@usgs.gov.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge recorded, 786 cfs, March 31, 2002; maximum gage-height recorded, 9.18 feet, July 7, 2005; minimum daily discharge, 0.02 cfs, July 9-10, 2012.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - March 2001 to current year.

INSTRUMENTATION - Tipping-bucket raingage.

WATER-QUALITY RECORDS

PERIOD OF RECORD - March 1996 to current year.

PERIOD OF DAILY RECORD -

WATER TEMPERATURE: March 2001 to current year.

SPECIFIC CONDUCTANCE: March 2001 to current year.

pH: August 2023 to current year.

DISSOLVED OXYGEN: August 2023 to current year.

TURBIDITY: March 2001 to current year.

INSTRUMENTATION - Satellite telemetry a continuous water-quality monitor and an automatic refrigerated sampler.

REMARKS -
For period10/01/2014-09/30/2015: Water temperature records are good. Specific conductance records are fair. Turbidity records are poor.
For period10/01/2015-09/30/2016: Water temperature records are good. Specific conductance records are fair. Turbidity records are poor.
For period10/01/2016-09/30/2017: Water temperature records are good. Specific conductance records are fair. Turbidity records are poor.
For period10/01/2017-09/30/2018: Water temperature records are good. Specific conductance records are fair. Turbidity records are poor.
For period10/01/2018-09/30/2019: Water temperature records are good. Specific conductance records are fair. Turbidity records are poor.

Data for parameter code 63680 (turbidity) were collected using a probe with the following specifications: turbidity, water, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +/-2.5 degrees, FNU (Formazin Nephelometric Units). Prior to October 1, 2004, turbidity data were published using parameter code 00076: turbidity, water, unfiltered, NTU (Nephelometric Turbidity Units). Hydrologic event 9 indicates a routine sample while J designates a storm event sample. Laboratory chemical analyses are by RTI Laboratories, Livonia, MI, and Test America Laboratory, Denver, CO. Laboratory sediment analyses are by the U.S. Geological Survey, KY Sediment Laboratory. Field determinations of discharge, specific conductance, pH, water temperature, turbidity, barometric pressure and dissolved oxygen are by the U.S. Geological Survey.

EXTREMES FOR PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: Maximum recorded, 209 microsiemens, May 15, 2006; minimum recorded, 9 microsiemens, January 2, 2008.

WATER TEMPERATURE: Maximum recorded, 29.7°C, July 6, 2012; minimum recorded, 0.4°C, January 10, 2011.

TURBIDITY: Maximum recorded, >2,200 FNU, on several days; minimum recorded, 0.8 FNU, July 11, 2012.