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Water-Year Summary for Site 02110704

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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.
Available Parameters
00010 Temperature, water(Min.,Max.,Mean)  
00060 Discharge(Max.,Min.,Mean)  
00065 Gage height(Max.,Min.,Mean)  
00065 Gage height(Min.,Max.,Mean) [Secondary]  
00095 Specific cond at 25C(Max.,Min.,Mean)  
00300 Dissolved oxygen(Max.,Min.,Mean)  
00400 pH(Max.,Min.,Med.)  
63680 Turbidity, Form Neph(Mean,Min.,Max.)  
72137 Discharge,tide fltrd(Max.,Min.,Mean)  

Water year 2021: 2021-10-01 to 2022-09-30
 

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USGS Water-Year Summary 2021
02110704 WACCAMAW RIVER AT CONWAY MARINA AT CONWAY, SC
LOCATION - Lat 33°49'58", long 79°02'38" referenced to North American Datum of 1927, Horry County, SC, Hydrologic Unit 03040206, on bulkhead of State Highway 501 Business Bridge at Conway.
DRAINAGE AREA - 1,440 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1994 to current year.
GAGE - Data collection platform and Acoustic Velocity Meter. Datum of gage is 6.14 ft below NAVD of 1988. Prior to Oct. 5, 1999, at site 1,000 ft downstream, at same datum.
REMARKS -

For water year 2014: Records fair.
For water year 2015: Records fair.
For water year 2016: Records good except for periods of extreme flooding, which are poor.
For water year 2017: Records fair.
For water year 2018: Records fair.
For water year 2019: Records fair.
For water year 2020: Records good to poor..
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 49,000 ft³/s, Sep. 25, 2018 as a result of Hurricane Florence, maximum gage height, 21.16 ft, Sep. 25, 2018 as a result of Hurricane Florence; minimum daily mean discharge, -321 ft³/s, Oct. 20, 1997.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1991 to current year.
PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: October 2006 to current year.
pH: October 2006 to current year.
TEMPERATURE: October 1991 to current year.
DISSOLVED OXYGEN: October 1990 to current year.
TURBIDITY: October 2006 to current year.
INSTRUMENTATION - Water-quality multiprobe and data collection platform.
REMARKS -

For water year 2014: Specific Conductance records good except for Oct. 1-29, which are fair; Temperature records good; pH records good; Dissolved Oxygen records good; Turbidity records good except for Oct. 1 to Dec. 24, which are fair.

For water year 2015: Specific Conductance records excellent, except for Dec. 12 to Jan. 9, Feb. 11 to Mar. 23, Aug. 14 to Aug. 27 and Sept. 25 to Sept. 30 and Oct. 21,which are good; Temperature records excellent; pH records excellent, except for Oct. 1 to Oct. 3, Jan. 13 to Feb. 10, and May. 19 to Jun. 23, which are good, Oct. 4 to Nov. 5 are poor; Dissolved Oxygen records excellent, except for Dec. 6 to Jan. 9, Jan. 13 to Feb. 10, and Jun. 24 to Jul. 15, which are good; Turbidity records poor.

For water year 2016: Specific Conductance records excellent, except for Mar. 10 - Apr. 5 and Sept 28-30, which are good; Temperature records excellent, except for Oct, 1 - Dec. 8 and Sept. 28-30, which are good; pH records excellent, except for Apr. 27 - Jun. 21 and Jul. 26 - Sept. 30, which are good; Dissolved Oxygen records excellent, except for Jan. 26 - Mar. 9 and Sept. 28-30, which are good; Turbidity records poor to excellent.

EXTREMES FOR PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: Maximum, 295 microsiemens/cm, Aug. 25, 2011; minimum, 42 microsiemens/cm, Sep. 18, 2018.

pH: Maximum, 7.6 standard units, many days in November and December, 2008; minimum 4.8 standard units, Mar. 16, 17, 2012.

WATER TEMPERATURE: Maximum, 34.0°C, Jun. 24, 25, 1996; minimum, 0.9°C, on many days, first occurrence on Jan. 08, 2018.

DISSOLVED OXYGEN: Maximum, 13.9 mg/L, on Jan. 6, 2001; minimum recorded, 0.8 mg/L, May 26, 27, 28, 29, 2012, July 23, 24, 25, 2013.

TURBIDITY: Maximum, 170 FNU, June 23, 2008; minimum, <1 FNU, Aug. 25, 26, 2011.