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Water-Year Summary for Site 01579550

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00095 Specific cond at 25C(Max.,Min.,Mean)  
63680 Turbidity, Form Neph(Mean,Min.,Max.)  
99133 NO3+NO2,water,insitu(Max.,Min.,Mean)  

Water year 2018: 2017-10-01 to 2018-09-30
 

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USGS Water-Year Summary 2018
01579550 SUSQUEHANNA RIVER NEAR DARLINGTON, MD
LOCATION - Lat 39°37'33.8", long 76°09'27.9" referenced to North American Datum of 1983, Harford County, MD, Hydrologic Unit 02050306,
DRAINAGE AREA - 27,300 mi², from automated delineation using 30-meter National Elevation Dataset digital elevation model data dated 2011.
SURFACE-WATER RECORDS
GAGE - Electronic data logger and water-quality monitor. Datum of gage is 9 ft above North American Vertical Datum of 1988.
COOPERATION - Funding for continuous water-quality data collection is provided by the U.S. Geological Survey.
WATER-QUALITY RECORDS
PERIOD OF RECORD - WATER TEMPERATURE: Feb 2014 to current year. SPECIFIC CONDUCTANCE: Feb 2014 to current year. DISSOLVED OXYGEN: Feb 2014 to Sept 30, 2015. pH: Feb 2014 to Sept 30, 2015. TURBIDITY: Feb 2014 to current year. NITRATE: Aug. 2014 to current year.
INSTRUMENTATION - Deployed unit is a YSI-EXO multi-parameter monitor meter equipped with YSI-6580 integrated temperature and specific conductance sensor, YSI-6561 pH sensor, YSI-6136 turbidity, and YSI-ROX-6150 dissolved oxygen optical sensors. Also deployed, is a SUNA Nitrate monitor meter with internal temperature sensor. Monitor meters are connected to a Campbell Scientific CR1000K data logger (EDL). Data was collected on fixed 15 minute intervals (0 and 15 minute marks) and transmitted every 1 hour via a Sierra Wireless AirLink Raven modem.
REMARKS - For Water Year 2015. Turbidity values greater than 1,000 formazin nepthelometric units (FNU) exceed the instrument calibration range. Values are included in the record but are presumed to have lower precision. Missing record due to periodic instrument malfunction.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 32.5°C, August 14, 2015; minimum, -1.0°C, on Feb 14, 2014. SPECIFIC CONDUCTANCE: Maximum, 415 microsiemens per centimeter, March 7, 2015; minimum, 131 microsiemens per centimeter, March 14, 2015. pH: Maximum, 12.6 standard units, May 20, 2013; minimum, 6.6 standard units, Sept. 4, 2014. DISSOLVED OXYGEN: Maximum, 18.6 milligrams per liter, March 3, 2014; minimum, 5.7 milligrams per liter, July 28, 2014. TURBIDITY: Maximum, 120 formazin nephelometric units (FNU), April 30, 2014; minimum, 0.6 formazin nephelometric units (FNU) 8/13,14,17,25, 2015 NITRATE: Maximum, 1.84 milligrams per liter, March 7, 9 and 11, 2015; minimum, 0.55 milligrams per liter, May 23, 2015.