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Water-Year Summary for Site 02334885

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

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

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USGS Water-Year Summary 2023
02334885 SUWANEE CREEK AT SUWANEE, GA
LOCATION - Lat 34°01'57", long 84°05'20" referenced to North American Datum of 1983, Gwinnett County, GA, Hydrologic Unit 03130001, 20.0 feet upstream of US 23 bridge, 1.7 miles southwest of Suwanee, 3.1 miles upstream of the Chattahoochee River, 0.2 miles upstream of Bennett Creek, and 0.65 miles downstream of Mill Creek.
DRAINAGE AREA - 47.1 mi².
REVISIONS HISTORY - Discharge for the period Mar. 7, 2018, to Oct. 2, 2018, was revised on Jun. 19, 2019, based on changes to the stage-discharge rating.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
DISCHARGE: October 1984 to current year.
GAGE-HEIGHT: October 1998 to current year.
GAGE - Satellite telemetry with a water-stage recorder and a continuous water-quality monitor. Datum of gage is 909.9 feet above North American Vertical Datum (NAVD) of 1988 (leveling by Global Positioning System equipment).
COOPERATION - Atlanta Regional Commission, 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, 7,870 cfs, September 21, 2009; maximum gage-height recorded, 14.30 feet, September 21, 2009; minimum daily discharge, 1.0 cfs, July 20, 1988.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - February 2001 to current year.
INSTRUMENTATION - Tipping-bucket raingage.
WATER-QUALITY RECORDS
PERIOD OF RECORD - February 2001 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.
REMARKS -
For period 10/01/2014-09/30/2015: Continuous water temperature record and specific conductance records are good; turbidity record is fair.
For period 10/01/2015-09/30/2016: Continuous water temperature record are good; specific conductance record is fair; turbidity record is fair.
For period 10/01/2016-09/30/2017: Continuous water temperature record are good; specific conductance record is fair; turbidity record is fair.
For period 10/01/2017-09/30/2018: Continuous water temperature record are good; specific conductance record is fair; turbidity record is fair.
For period 10/01/2018-09/30/2019: Continuous water temperature record are good; specific conductance record is fair; turbidity record is fair.

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 Laboratory, Livonia, MI. Laboratory sediment analyses are by the U.S. Geological Survey, Kentucky Sediment Laboratory. Field determinations of discharge, gage height, specific conductance, pH, water temperature, air temperature, turbidity, barometric pressure, and dissolved oxygen are by the U.S. Geological Survey.
EXTREMES FOR PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: Maximum recorded, 415 microsiemens, August 24, 2007; minimum recorded, 21 microsiemens, August 29, 2023.

WATER TEMPERATURE: Maximum recorded, 27.8 °C, July 30, 2011; minimum recorded, 0.5 °C, January 8, 2014, January 6, 2018.

TURBIDITY: Maximum recorded, >2,200 FNU, July 10, 2003; minimum recorded, 1.0 FNU, January 21, 2014.