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Water-Year Summary for Site 021989715

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Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00010 Temperature, water(Max.,Min.,Mean)  
00065 Gage height(Tid.,Tid.)  
00095 Specific cond at 25C(Max.,Min.,Mean)  
00095 Specific cond at 25C(Max.,Min.,Mean)  
00300 Dissolved oxygen(Max.,Min.,Mean)  
00300 Dissolved oxygen(Max.,Min.,Mean)  
00400 pH(Max.,Min.,Med.)  
00480 Salinity(Max.,Min.,Med.)  
00480 Salinity(Max.,Min.,Med.)  
63680 Turbidity, Form Neph(Min.,Max.)  
72147 Depth, sensor(Max.,Min.,Mean)  

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

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USGS Water-Year Summary 2022
021989715 SAVANNAH RIVER AT GARDEN CITY, GA
LOCATION - Lat 32°06'57.9", long 81°07'42.0" referenced to North American Datum of 1983, Chatham County, GA, Hydrologic Unit 03060109, on landward side of breasting dolphin near right bank, upstream of the Marsh Island turning basin and downstream of the Kings Island turning basin, 0.95 miles downstream of the confluence with Pipemakers Canal, 0.10 miles upstream of the confluence with Dundee Canal, and, at Garden City.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
GAGE HEIGHT: November 2013 to current year.
GAGE - Satellite telemetry with a water-stage recorder. Datum of gage is North American Vertical Datum (NAVD) of 1988 (levels by U. S. Geological Survey).
COOPERATION - Savannah Maritime Association.
REMARKS -

For period: 10/01/2014-09/30/2015: Gage height records poor.
For period: 10/01/2015-11/01/2017: Gage height records good.
For period: 11/01/2017-11/25/2019: Gage height records poor.
For period: 11/25/2019-05/13/2020: Gage height records fair.
For period: 05/13/2020-10/01/2020: Gage height records good.

EXTREMES FOR PERIOD OF RECORD - Maximum gage height recorded, 8.75 feet, September 11, 2017; minimum gage height recorded, -7.94 feet, January 3, 2014.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD -
UPPER QW MONITOR (-13.25 feet NAVD 1988 ):
SPECIFIC CONDUCTANCE: November 2012 to current year.

pH: November 2012 to current year.

WATER TEMPERATURE: November 2012 to current year.

DISSOLVED OXYGEN: November 2012 to current year.

TURBIDITY: November 2012 to current year.

LOWER QW MONITOR (-23.28 feet NAVD 1988):

SPECIFIC CONDUCTANCE: November 2013 to current year.

WATER TEMPERATURE: November 2013 to current year.

DISSOLVED OXYGEN: November 2013 to current year.

DEPTH BELOW WATER SURFACE: November 2013 to current year.
COOPERATION - Savannah Maritime Association and U.S. Army Corps of Engineers, Savannah District.
INSTRUMENTATION -
UPPER QW MONITOR (-13.25 feet NAVD 1988): Continuous water-quality monitor measuring Specific Conductance, pH, Water Temperature, Dissolved Oxygen, and Turbidity.

LOWER QW MONITOR (-23.25 feet NAVD 1988): Continuous water-quality monitor measuring Specific Conductance, Water Temperature, Dissolved Oxygen, and Depth below Water Surface.
REMARKS -
UPPER QW MONITOR (-13.25 feet NAVD 1988): For period:10/01/2014-10/17/2017: Specific Conductance, pH, Water Temperature, Dissolved Oxygen, and Salinity records rated good; Turbidity records rated fair.

LOWER QW MONITOR (-23.25 feet NAVD 1988): For period: 10/01/2014-10/17/2017: Specific Conductance, Water Temperature, Dissolved Oxygen, Salinity records are rated good; Depth-below-Water-Surface records rated 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).
EXTREMES FOR PERIOD OF RECORD -
Upper QW Monitor (-13.25 feet NAVD 1988)
SPECIFIC CONDUCTANCE: Maximum recorded, 36,100 microsiemens, September 10, 2016; minimum recorded, 54 microsiemens, February 26, 27, 28, 2020; March 15, 2020.

pH: Maximum recorded, 7.9 units, March 20-23, 2017, March 13, 2018, December 23, 26-28, 2020 ; minimum recorded, 6.1 units, July 22, 2013.

WATER TEMPERATURE: Maximum recorded, 30.9°C, August 21, 2016 ; minimum recorded, 5.4°C, January 7, 2018.

DISSOLVED OXYGEN: Maximum recorded, 11.4 mg/L, January 31, 2014 and February 1, 2014; minimum recorded, 0.4 mg/L, August 21, 2017.

TURBIDITY: Maximum recorded, 1,090 FNU, December 10, 2018; minimum recorded, <0.5 FNU, October 31, 2013 and June 9, 2014.

SALINITY: Maximum computed, 22.8 parts-per-thousand, September 10, 2016; minimum computed, <0.04 parts-per-thousand, on many days during the period of record.

Lower QW Monitor (-23.25 feet NAVD 1988)
SPECIFIC CONDUCTANCE: Maximum recorded, 41,500 microsiemens, October 8, 2016; minimum recorded, 54 microsiemens, February 26, 27, 28, 2020; March 07, 2020; March 15, 2020

WATER TEMPERATURE: Maximum Water Temperature: 30.5°C; July 24, 2020; minimum recorded, 5.5°C, January 31, 2014.

DISSOLVED OXYGEN: Maximum recorded, 11.3 mg/L, February 1, 2014; minimum recorded, 0.4 mg/L, August 3, 2016, August 22, 2017, and July 3, 2019.

SALINITY: Maximum computed, 26.6 parts-per-thousand, October 8, 2016 minimum computed, <0.04 parts-per-thousand, on many days during the period of record.

DEPTH BELOW WATER SURFACE: Maximum recorded, 31.20 feet, September 11, 2017; minimum recorded, 15.42 feet, January 3, 2014.