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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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USGS Water-Year Summary 2024
02231254 ST MARY'S RIVER AT I-95, NEAR KINGSLAND, GA
LOCATION - Lat 30°44'39.4", long 81°39'14.4" referenced to North American Datum of 1983, Camden County, GA, Hydrologic Unit 03070204,
DRAINAGE AREA - 1,480 mi². revised.
REVISIONS HISTORY - WDR GA-2013: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
DISCHARGE: March 2010 to current year.
GAGE-HEIGHT: March 2010 to current year.
WATER VELOCITY: March 2010 to current year.
DISCHARGE: March 2010 to current year.
GAGE-HEIGHT: March 2010 to current year.
WATER VELOCITY: March 2010 to current year.
GAGE - Satellite telemetry with a water-stage recorder and an acoustic velocity meter. Datum of gage the North American Vertical Datum (NAVD) of 1988 (leveling by Global Positioning System equipment). Prior to October 1, 2011, datum of gage is 9.5 feet below the North American Vertical Datum (NAVD) of 1988.
COOPERATION - Georgia Department of Natural Resources, Environmental Protection Division.
REMARKS - Gage-height records are generally good. Water velocity 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.
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. Unfiltered 15-minute stage, velocity, and discharge data are available upon request.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge recorded, 51,300 cfs, September 11, 2017; maximum gage-height, 13.06 feet, August 26, 2011; minimum gage-height recorded, -5.04 feet, March 6, 2013. Extremes have been adjusted to NAVD88.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - March 2010 to current year.
INSTRUMENTATION - Tipping-bucket raingage.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: December 2015 to May 2017 (discontinued).
July 2020 to August 2021 Specific conductance, water temperature and dissolved oxygen record is rated fair.
WATER TEMPERATURE: December 2015 to May 2017 (discontinued).
July 2020 to August 2021 Water temperature record is rated fair.
DISSOLVED OXYGEN: December 2015 to May 2017 (discontinued).
July 2020 to August 2021 Dissolved oxygen record is rated fair.
SPECIFIC CONDUCTANCE: December 2015 to May 2017 (discontinued).
July 2020 to August 2021 Specific conductance, water temperature and dissolved oxygen record is rated fair.
WATER TEMPERATURE: December 2015 to May 2017 (discontinued).
July 2020 to August 2021 Water temperature record is rated fair.
DISSOLVED OXYGEN: December 2015 to May 2017 (discontinued).
July 2020 to August 2021 Dissolved oxygen record is rated fair.
REMARKS -
For Period: 12/19/2014 - 08/16/2016: Specific Conductance records poor. Water Temperature records poor. Dissolved Oxygen records poor.
For Period: 08/17/2016 - 05/16/2017: Specific Conductance records good. Water Temperature records good. Dissolved Oxygen records good.
For Period: 05/16/2017 - 08/12/2021: Specific Conductance records good. Water Temperature records good. Dissolved Oxygen records good.
For Period: 12/19/2014 - 08/16/2016: Specific Conductance records poor. Water Temperature records poor. Dissolved Oxygen records poor.
For Period: 08/17/2016 - 05/16/2017: Specific Conductance records good. Water Temperature records good. Dissolved Oxygen records good.
For Period: 05/16/2017 - 08/12/2021: Specific Conductance records good. Water Temperature records good. Dissolved Oxygen records good.
EXTREMES FOR PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: Maximum recorded, 43800 microsiemens, October 7, 2016; minimum recorded, 47 microsiemens, August 12, 2021.
WATER TEMPERATURE: Maximum recorded, 32.2°C, July 28, 2016, July 30, 2016 ; minimum recorded, 10.1°C, February 21, 2015.
DISSOLVED OXYGEN: Maximum recorded, 9.3 mg/L, February 22, 2015 , January 25-27 2016; minimum recorded, 2.2 mg/L, September 28,2020, July 30, and 31, 2021
SPECIFIC CONDUCTANCE: Maximum recorded, 43800 microsiemens, October 7, 2016; minimum recorded, 47 microsiemens, August 12, 2021.
WATER TEMPERATURE: Maximum recorded, 32.2°C, July 28, 2016, July 30, 2016 ; minimum recorded, 10.1°C, February 21, 2015.
DISSOLVED OXYGEN: Maximum recorded, 9.3 mg/L, February 22, 2015 , January 25-27 2016; minimum recorded, 2.2 mg/L, September 28,2020, July 30, and 31, 2021
