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Water-Year Summary for Site 01656903

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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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Available Parameters
00010 Temperature, water(Max.,Min.,Mean,Med.)  
00060 Discharge(Mean)  
00095 Specific cond at 25C(Max.,Min.,Mean,Med.)  
00300 Dissolved oxygen(Max.,Min.,Mean,Med.)  
00400 pH(Max.,Min.,Med.)  
63680 Turbidity, Form Neph(Med.,Mean,Min.,Max.)  

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

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USGS Water-Year Summary 2022
01656903 FLATLICK BRANCH ABOVE FROG BRANCH AT CHANTILLY, VA
LOCATION - Lat 38°52'56.2", long 77°25'55.9" referenced to North American Datum of 1927, Fairfax County, VA, Hydrologic Unit 02070010, on right bank 0.9 mi downstream from State Highway 50, 100 ft upstream from Frog Branch, and 0.6 mi south of Chantilly.
DRAINAGE AREA - 4.20 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - September 2007 to current year.
GAGE - Water-stage recorder. Datum of gage is 254.92 ft NAVD of 1988.
WATER-QUALITY RECORDS
PERIOD OF RECORD - October 2007 to current year.
PERIOD OF DAILY RECORD -
DISSOLVED OXYGEN: March 2012 to current year.
pH: October 2007 to current year.
SPECIFIC CONDUCTANCE: October 2007 to current year.
TURBIDITY: October 2007 to current year.
WATER TEMPERATURE: October 2007 to current year.
INSTRUMENTATION - Water-quality monitor. Electronic data logger with 15-minute recording interval.
EXTREMES FOR PERIOD OF DAILY RECORD -
DISSOLVED OXYGEN: Maximum: 16.9 mg/L, Apr. 13, 2015, but may have been higher during periods of missing record; minimum: 4.0 mg/L, Aug. 21, 2015 and Sept. 11, 2015, but may have been lower during periods of missing record.
pH: Maximum: 9.0 standard units, Apr. 4, 2015, but may have been higher during periods of missing record; minimum: 6.5 standard units, July 8, 2015, but may have been lower during periods of missing record.
SPECIFIC CONDUCTANCE: Maximum: 5490 microsiemens/cm, Feb. 22, 2015, but may have been higher during periods of missing record; minimum: 54 microsiemens/cm, July 8, 2015, but may have been lower during periods of missing record.
TURBIDITY:- Maximum: 580 FNU, May 18 2015, but may have been higher during periods of missing record; minimum: 0.0 FNU, on many days.
WATER TEMPERATURE: Maximum: 27.2 °C, July 30, 2015, but may have been higher during periods of missing record; minimum: -0.1 °C, Feb. 22, 24, 25, 2015, but may have been lower during periods of missing record.