USGS Water-Year Summary for Site 02205000

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

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

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USGS Water-Year Summary 2023

02205000 WILDCAT CREEK NEAR LAWRENCEVILLE, GA

LOCATION - Lat 34°00'07", long 84°00'18" referenced to North American Datum of 1983, Gwinnett County, GA, Hydrologic Unit 03070103, at culvert on Russell Road, 3.3 miles north of Lawrenceville, Ga.

DRAINAGE AREA - 1.28 mi². revised.

REVISIONS HISTORY -

WDR GA-03-01: 2001, 2002 annual peaks, WDR GA-04-01: 2002 annual peak. WDR-US-2011: Drainage Area.

Gage datum was revised on Dec. 3, 2020, based on an error in the determination of the gage datum.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1953 to September 1982 (continuous-record station), January 1996 to August 2019 (crest-stage partial-record station), September 5, 2019 to current year.

GAGE - Satellite telemetry with a water-stage recorder. Prior to September 5, 2019, crest-stage partial-record gage. Datum of gage is 967.26 feet above the North American Vertical Datum (NAVD) of 1988.

COOPERATION - Gwinnett County Department of Water Resources.

REMARKS - A crest-stage gage is a device which will register the peak stage occurring between inspections of the gage. A stage-discharge relation for each gage is developed from discharge measurements made by indirect measurements of peak flow or by current meter. The date of the maximum discharge is not always certain, but is usually determined by comparison with nearby continuous-record stations, weather records, or local inquiry. Only the maximum discharge for each water year is given. Information of some lower floods may have been obtained, but is not published within. The years given in the period of record represent water years for which the annual maximum has been determined.

Gage-height records are generally fair. 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, 1,840 cfs, September 21, 2009; maximum gage-height, 10.05 feet, September 21, 2009.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - October 2005 to current year.

INSTRUMENTATION - Tipping-bucket raingage.

WATER-QUALITY RECORDS

PERIOD OF RECORD - 1956 to 1976, April 2019 to current year.

PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: September 2019 to current year.
WATER TEMPERATURE: September 2019 to current year.
TURBIDITY: September 2019 to current year.

INSTRUMENTATION - Satellite telemetry with a continuous water-quality monitor.

REMARKS -
For period:10/01/2019-09/30/2020: Continuous water temperature and specific conductance records are good, turbidity record is 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). Laboratory chemical analyses are by RTI Laboratory, Livonia, MI. 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, microbiology, air temperature, and dissolved oxygen are by the U.S. Geological Survey.

EXTREMES FOR PERIOD OF RECORD -
WATER TEMPERATURE: Maximum recorded, 27.5°C, August 10, 2020; Minimum recorded;4.1°C, December 26, 2020.
SPECIFIC CONDUCTANCE: Maximum recorded, 393 microsiemens, August 5, 2020: minimum recorded 17 microsiemens, June 15, 2020.
TURBIDITY: Maximum recorded, 677 FNU, August 21, 2020; minimum recorded 0.8 FNU May 17, 2020.