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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.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
021720825 ASHLEY RIVER BELOW SUMMERVILLE, SC
LOCATION - Lat 32°55'33", long 80°09'06" referenced to North American Datum of 1983, Dorchester County, SC, Hydrologic Unit 03050202, Referenced to NAV88 Datum of 6.592 ft in October 17, 2017.
SURFACE-WATER RECORDS
PERIOD OF RECORD - January 2017 to current year.
GAGE - Data collection platform. Datum of gage is 8.41 ft below NAVD of 1988.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 15.06 ft, September 11, 2017; minimum gage height, 3.38 ft, April 17, 2018. Gage height affected by tide.
WATER-QUALITY RECORDS
PERIOD OF RECORD - January 2017 to current year.
PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: January 2017 to current year.
WATER TEMPERATURE: January 2017 to current year.
DISSOLVED OXYGEN: January 2017 to current year.
SPECIFIC CONDUCTANCE: January 2017 to current year.
WATER TEMPERATURE: January 2017 to current year.
DISSOLVED OXYGEN: January 2017 to current year.
INSTRUMENTATION - Water-quality multiprobe and data collection platform.
EXTREMES FOR PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: Maximum, 8,440 microsiemens/cm, Dec. 5, 2017; minimum, 64 microsiemens/cm, Dec. 19, 2018.
WATER TEMPERATURE: Maximum, 32.3°C, Jun. 24, 2018; minimum, 0.30°C, Jan. 7, 2018.
DISSOLVED OXYGEN: Maximum, 13.4 mg/L, Jan. 6, 2018; minimum, 2 mg/L, Aug. 14, 2018.
