USGS Water-Year Summary for Site 02397530

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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(Max.,Min.,Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Max.,Min.,Mean)
	00400 pH(Max.,Min.,Med.)

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

02397530 COOSA RIVER AT STATE LINE, AL/GA

LOCATION - Lat 34°12'07", long 85°27'11.7" referenced to North American Datum of 1983, Cherokee County, AL, Hydrologic Unit 03150105, 6.5 miles southwest of Coosa, GA, and at river mile 254.8.

DRAINAGE AREA - 4,362 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD -
DISCHARGE: October 2012 to current year.
GAGE HEIGHT: January 2005 to current year.

GAGE - Satellite transmitter with water stage recorder. Datum of gage is 549.5 feet above North American Vertical Datum of 1988 (leveling by Global Positioning System equipment).

COOPERATION - Georgia Department of Natural Resources, Environmental Protection Division.

REMARKS - Gage-height records are generally good. Water velocity records are generally fair. 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.

Water velocity data represent water velocity at the downstream cross-section of the bridge with positive values in the downstream direction.

EXTREMES FOR PERIOD OF RECORD - Maximum gage height recorded, 22.12 feet, February 25, 2019; minimum gage height recorded, 6.23 feet, May 19, 2005.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - January 2001 to October 2017.

INSTRUMENTATION - Tipping-bucket rain gage.

WATER-QUALITY RECORDS

PERIOD OF RECORD - August 1974 to current year.

PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: August 1976 to current year.

pH: August 1976 to current year.

WATER TEMPERATURE: August 1976 to current year.

DISSOLVED OXYGEN: August 1976 to current year.

TURBIDITY: April 2005 to January 2007.

COOPERATION - Georgia Department of Natural Resources, Environmental Protection Division.

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

REMARKS -

Discrete Water-quality Records: Analyzing agency is represented by the five-digit code listed under USGS Water Science Center special parameter code 99920. Laboratory analyses with analyzing agency code 81341 are by the Laboratory Services Section, Environmental Protection Division, Georgia Department of Natural Resources. Field determinations of Discharge, Specific Conductance, pH, Water Temperature, Air Temperature, and Dissolved Oxygen are by the U.S. Geological Survey.

Continuous Water-quality Records:

For period 10/01/2018 to 09/30/2019: Specific Conductance, pH, Water Temperature, and Dissolved Oxygen are rated good.

For period 10/01/2019 to 01/28/2020: Specific Conductance, pH, Water Temperature, and Dissolved Oxygen are rated good.

EXTREMES FOR PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: Maximum recorded, 372 microsiemens, November 4, 2016; minimum recorded, 32 microsiemens, April 15, 1979.
pH: Maximum recorded, 10.8 units, June 10, 2007; minimum recorded, 6.1 units, September 22, 1992.
WATER TEMPERATURE: Maximum recorded, 36.5 °C, July 18, 25, 1986, July 26, 2016; minimum recorded, 1.0 °C, January 13, 1982.
DISSOLVED OXYGEN: Maximum recorded, 19.9 mg/L, June 10, 2016, June 13, 2016; minimum recorded, <0.5 mg/L, July 14, 1993, August 18, 19, 2007.
TURBIDITY: Maximum recorded, 260 FNU, January 9, 2007; minimum recorded, <2.0 FNU on several days during period of turbidity record.