USGS Water-Year Summary for Site 02208450

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

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

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USGS Water-Year Summary 2023

02208450 ALCOVY RIVER ABOVE COVINGTON, GA

LOCATION - Lat 33°38'21.8", long 83°46'42.3" referenced to North American Datum of 1983, Newton County, GA, Hydrologic Unit 03070103, at bridge on Alcovy Trestle Road, 600.0 feet downstream from Strouds Creek, 100.0 feet upstream from railroad bridge, and 6.0 miles Northeast of Covington, GA.

DRAINAGE AREA - 186 mi². revised.

REVISIONS HISTORY - Gage datum was revised on January 13, 2022 based on an error in the determination of the gage datum.

Drainage area was revised on May 8, 2023 based on a more accurate determination of the drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD -
DISCHARGE: January 1972 to current year.
GAGE HEIGHT: October 1998 to current year.

GAGE - Satellite telemetry with a water-stage recorder. Datum of gage is 645.92 feet above North American Vertical Datum (NAVD) of 1988 (from GNSS survey.)

Prior to October 1986, at site 400 feet upstream at same datum.

COOPERATION - City of Covington.

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, 7,620 cfs, (gage height, 14.49 feet) March 18, 1990; maximum gage height recorded, 14.79 feet, March 16, 1976; minimum daily discharge, 0.18 cfs, July 22, 2000.

Minimum daily discharge may have been lower during period of extensive diversion, June 19 through September 12, 1986.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - October 2008 to September 2009. October 2012 to September 2017.

INSTRUMENTATION - Tipping-bucket raingage.

WATER-QUALITY RECORDS

PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: October 2014 to current year.

pH: October 2014 to current year.

WATER TEMPERATURE: October 2014 to current year.

DISSOLVED OXYGEN: October 2014 to current year.

TURBIDITY: October 2014 to current year.

COOPERATION - Newton County.

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

EXTREMES FOR PERIOD OF RECORD -
SPECIFIC CONDUCTANCE: Maximum recorded, 97 microsiemens, July 12, 2015; minimum recorded, 22 microsiemens, April 14, 2015.

pH: Maximum recorded, 7.6 units, October 12, 2019; minimum recorded, 6.0 units, August 03, 2018, August 05, 2018 and February 08, 2020.

WATER TEMPERATURE: Maximum recorded, 28.9°C, June 17, 2022; minimum recorded, 0.4°C, January 07, 2018.

TURBIDITY: Maximum recorded, 414 FNU, April 12, 2018; minimum recorded, 2.0 FNU, February 2, 2015.

DISSOLVED OXYGEN: Maximum recorded, 13.5 mg/L, January 7, 2018; minimum recorded, 4.9 mg/L, August 28, 2023.