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Water-Year Summary for Site 384637075153201

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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(Med.) [Discontinued]  
00010 Temperature, water(Med.) [Discontinued]  
00045 Precipitation(Sum) [Discontinued]  
00095 Specific cond at 25C(Med.) [Discontinued]  
00095 Specific cond at 25C(Med.) [Discontinued]  
00300 Dissolved oxygen(Med.) [Discontinued]  
00400 pH(Med.) [Discontinued]  
72019 Water level, depth LSD(Med.) [Discontinued]  
99133 NO3+NO2,water,insitu(Med.) [Discontinued]  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
384637075153201 Ng45-02
Northern Atlantic Coastal Plain aquifer system
Beaverdam Sand
LOCATION - Lat 38°46'37.4", long 75°15'31.9" referenced to North American Datum of 1983, Sussex County, DE, Hydrologic Unit 02040207, near Milton.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 22 ft. Upper casing diameter 2 in; top of first opening 19 ft, bottom of last opening 22 ft.
DATUM - Land-surface datum is 16 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of pvc inside protective metal casing, 3.55 ft above land-surface datum, Sep. 16, 2002 to present.
PERIOD OF RECORD - September 2002 to current year.
GAGE -
  • Water Year 2020: Records good.
  • Water Year 2019: Records good.
  • Water Year 2018: Records good.
  • Water Year 2017: Records good.
  • Water Years 2014-2016: Records good.

    • Water-level measurements by U.S. Geological Survey personnel. Equipped with digital water-level recorder from February 2014 to current year. U.S. Geological Survey satellite data-collection platform at well. Missing data due to instrument or platform malfunction, site visits, and water quality sampling.
    REMARKS - Water levels are affected by intermittent pumping intervals for water quality collection at well.
    EXTREMES FOR PERIOD OF RECORD - Highest water-level measured, 5.87 feet below land surface (recorder), October 11, 2016; lowest measured, 12.27 feet below land surface, September 16, 2015 (value recorded during pumping interval).
    CLIMATOLOGICAL RECORDS
    PERIOD OF RECORD - March 2015 to August 2020 (discontinued).
    INSTRUMENTATION - Weighing cell precipitation gage.
    EXTREMES FOR PERIOD OF RECORD - Maximum daily precipitation, 9.31 in., September 29, 2016.
    REMARKS - Gaps in record indicate missing or erroneous data. Records estimated as zero are based on confirmation with nearby U.S. Geological Survey and National Weather Service sites that zero precipitation occurred on those days. U.S. Geological Survey water-data telemeter at station.

    Selected precipitation unit values were removed from the record between April 2018 and July 2019 due to precision reported by the instrument.  Computation of daily totals on those days was unaffected.

    WATER-QUALITY RECORDS
    WELL CHARACTERISTICS - Depth 22 ft. Upper casing diameter 2 in; top of first opening 19 ft, bottom of last opening 22 ft.
    DATUM - Land-surface datum is 16 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of pvc inside protective metal casing, 3.55 ft above land-surface datum, Sep. 16, 2002 to present.
    PERIOD OF DAILY RECORD -

    Purged Ex Situ

    DISSOLVED OXYGEN: April 2014 to November 2019.

    PH: March 2014 to November 2019.

    SPECIFIC CONDUCTANCE: March 2014 to current year.

    WATER TEMPERATURE: May 2014 to current year.  NITRATE: March 2016 to current year.

    In Situ

    SPECIFIC CONDUCTANCE: June 2014 to current year.

    WATER TEMPERATURE: June 2014 to current year.

    INSTRUMENTATION - Multi parameter sonde and nitrate sensor installed ex situ. Pressure transducer with contacting conductance sensor and thermistor installed in well.
    REMARKS -
    • For Water Year 2019, records good.
    • For Water Year 2018, records good.
    • For Water Year 2017, records good.
    • For Water Year 2016, records good.
    • For Water Year 2015, records good.

    Daily median values are published for all water quality parameters.

     
    EXTREMES FOR PERIOD OF RECORD -

    Purged Ex Situ

    DISSOLVED OXYGEN: Maximum, 10.2 milligrams per liter, July 21, 2015 (recorder); minimum, 7.7 milligrams per liter, December 19, 2002.

    PH: Maximum, 6.3, December 19, 2002; minimum, 5.3, June 28, 2016.

    SPECIFIC CONDUCTANCE: Maximum, 309 microsiemens per centimeter, January 8, 2020 (recorder).  Minimum, 140 microsiemens per centimeter, August 27, 2012.

    WATER TEMPERATURE: Maximum, 17.3 degC, August 27, 2012. Minimum 12.1 degC, on May 7, 2015 (recorder).

    NITRATE: Maximum, 20.9 milligrams per liter, January 9, 2020 (recorder). Minimum 8.6, August 27, 2012.

    Continuous In Situ

    SPECIFIC CONDUCTANCE: Maximum 293 microsiemens per centimeter, March 22, 2020 (recorder): minimum, 157 microsiemens per centimeter, May 13, 2014 (recorder).

    WATER TEMPERATURE: Maximum, 18.1 degC, October 21, 2018 (recorder). Minimum, 10.1 degC, April 1, 2015 (recorder).