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Water-Year Summary for Site 02198840

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Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00045 Precipitation(Sum)  
00060 Discharge(Tid.,Tid.)  
00065 Gage height(Tid.,Tid.)  
00095 Specific cond at 25C(Max.,Min.,Mean)  
00300 Dissolved oxygen(Mean,Max.,Min.)  
00400 pH(Max.,Min.,Med.)  
00480 Salinity(Max.,Min.,Med.)  
63680 Turbidity, Form Neph(Med.,Min.,Max.)  

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

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USGS Water-Year Summary 2022
02198840 SAVANNAH RIVER NEAR PORT WENTWORTH, GA
LOCATION - Lat 32°14'08", long 81°09'05" referenced to North American Datum of 1927, Effingham County, GA, Hydrologic Unit 03060109, at right downstream fender of Interstate 95 bridge, 1.0 mile downstream from Abercorn Creek, and 6.1 miles north of Port Wentworth.
DRAINAGE AREA - Indeterminate.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
DISCHARGE: January 2014 to current year.
GAGE HEIGHT: October 1986 to current year.
WATER VELOCITY: January 2014 to current year.
GAGE - Satellite telemetry with a water-stage recorder. Datum of gage is 0.00 feet referenced to National Geodetic Vertical Datum (NAVD) of 1988 (leveling by Global Positioning System equipment). Prior to October 1, 2006, datum of gage was 0.00 feet above National Geodetic Vertical Datum (NGVD) of 1929 (levels by U.S. Army Corps of Engineers).
COOPERATION - City of Savannah.
REMARKS -

For period: 10/01/2014-11/02/2015: Discharge records poor. Gage height records poor. Water velocity records fair.
For period: 11/03/2015-04/06/2017: Discharge records poor. Gage height records good. Water velocity records good.
For period: 04/07/2017-10/17/2017: Discharge records poor. Gage height records fair. Water velocity records good.
For period: 10/18/2017-11/19/2018: Discharge records fair. Gage height records fair. Water velocity records fair.
For period: 11/20/2018-10/03/2019: Discharge records poor. Gage height records fair. Water velocity records poor.
For period: 10/04/2019-02/11/2020: Discharge records fair. Gage height records fair. Water velocity records fair.
For period: 02/12/2020-05/14/2020: Discharge records fair. Gage height records good. Water velocity records good.
For period: 05/15/2020-07/23/2020: Discharge records fair. Gage height records good. Water velocity records fair.
For period: 07/24/2020-10/13/2020: Discharge records fair. Gage height records fair. Water velocity records fair.

Streamflow at this site is affected significantly by astronomical tides. By convention, the U.S. Geological Survey has established ebb (seaward) flows as positive flows and flood (landward) flows as negative flows.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge recorded, 57,500 cfs, March 9, 2020; maximum gage height recorded, 6.98 feet, September 11, 2017; minimum gage height recorded, -5.91 feet, September 11, 2017.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - October 2002 to current year.
INSTRUMENTATION - Tipping-bucket raingage.
WATER-QUALITY RECORDS
PERIOD OF RECORD - October 2008 to November 2010.
PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: October 1987 to current year.
WATER TEMPERATURE: October 1999 to current year.
SALINITY: October 2011 to current year.
pH: August 2013 to current year.
TURBIDITY: August 2013 to current year.
DISSOLVED OXYGEN: August 2013 to current year.
INSTRUMENTATION - Satellite telemetry with a continuous water-quality monitor.
REMARKS - Computed Salinity records are rated "good" for days in which values could be computed; occasional missing salinity values due to specific conductance less than allowable input for salinity computation.
EXTREMES FOR PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: Maximum recorded: 18,200 microsiemens, October 8, 2016; minimum recorded: 30 microsiemens, August 26, 1995.

pH: Maximum recorded: 7.6 units, July 23, 2015; minimum recorded 6.2 units, October 10, 2016.

WATER TEMPERATURE: Maximum recorded, 31.7°C, August 10, 2007, and August 8, 9, 2011; minimum recorded, 3.9°C, January 11, 2010.

DISSOLVED OXYGEN: Maximum recorded, 11.9 mg/L, January 7,8, 2018; minimum recorded, 3.4 mg/L, June 24, 2018.

TURBIDITY: Maximum recorded, 200 FNU, September 13, 2016; minimum recorded, 2.6 FNU, December 12, 2013.

SALINITY: Maximum computed, 10.8 parts-per-thousand, October 8, 2016; minimum computed, <0.04 parts-per-thousand, many days during the period of daily record.