USGS Water-Year Summary for Site 02335870

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00045 Precipitation(Sum)
	00045 Precipitation(Sum) [Operational]
	00060 Discharge(Mean)
	00065 Gage height(Mean)

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

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USGS Water-Year Summary 2023

02335870 SOPE CREEK NEAR MARIETTA, GA

LOCATION - Lat 33°57'14", long 84°26'36" referenced to North American Datum of 1983, Cobb County, GA, Hydrologic Unit 03130001, on downstream side of bridge on Lower Roswell Road (South Roswell Road), 0.3 miles downstream from Bishop Creek, 6.1 miles east of Marietta, and 2.6 miles upstream from mouth.

DRAINAGE AREA - 30.7 mi². revised.

REVISIONS HISTORY - WDR GA-89-1: 1985(P), 1986(M), 1987 (P, daily discharge, and monthly runoff), 1988(P). WDR-US-2011: Drainage Area.

SURFACE-WATER RECORDS

PERIOD OF RECORD -
DISCHARGE: October 1984 to current year. Occasional low-flow measurements, water years 1944, 1951, 1953-55, 1957, 1961.
GAGE HEIGHT: October 1998 to current year.

GAGE - Satellite telemetry with a water-stage recorder. Datum of gage is 881.66 feet above North American Vertical Datum (NAVD) of 1988 (levels by Georgia Department of Transportation).

COOPERATION - USGS National Water-Quality Assessment (NAWQA) Program; Atlanta Regional Commission.

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, 9,500 cfs, September 21, 2009; maximum gage-height recorded, 18.35 feet, September 21, 2009; minimum daily discharge, 0.79 cfs, July 20, 1988.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - January 2001 to October 2017.

INSTRUMENTATION - Tipping-bucket raingage.

WATER-QUALITY RECORDS

PERIOD OF DAILY RECORD -
WATER TEMPERATURE: March 2012 to November 2020.

INSTRUMENTATION - Satellite telemetry with a continuous water temperature thermistor.

REMARKS -

EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum recorded, 29.2°C, August 13, 2019; minimum recorded, -0.1°C, January 25 and 30, 2014.