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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily Groundwater Levels
 
391542077423801 49Y 1 SOW 022
LOCATION.--Latitude 39°15'42", Longitude 77°42'38", North American Datum of 1927
                    Loudoun County, Va., Hydrologic Unit 02070008.
WELL CHARACTERISTICS.--Well is located in bedrock of Precambrian or Cambrian age. Depth 516 ft.
PERIOD OF RECORD.--Continual data, December 2003 to current year. Periodic data, November 1963 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All continual data through September 2015, all approved periodic data.
EXTERNAL INFLUENCE.--No known external influences.
GAGE OPERATION.--U.S. Geological Survey, Virginia Water Science Center.
     Duration Plot with Daily Groundwater Level Conditions
Provisional Data Subject to Revision 391542077423801 plot. 49Y 1
Provisional Data Subject to Revision

                    

The current daily value for 03/22/2017 is 57.78 feet below land surface.

  explanation   Percentile Description Duration Plot Description 28 Day 14 Day 7 Day Daily
      Duration Table of Daily Groundwater Levels
            Maximum depth below land surface, in feet


                391542077423801     49Y 1

   Lowest Level
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Highest Level
         
Years of record
January
61.97
61.59
60.73
59.90
58.57
57.62
55.89
55.52
52.00
 
68
February
60.74
60.47
60.18
59.12
58.35
57.49
56.16
55.69
55.20
 
71
March
61.97
60.76
60.42
59.65
58.22
57.00
55.82
55.73
55.37
 
75
April
61.32
60.73
60.31
59.40
58.12
56.92
55.70
54.96
53.94
 
71
May
61.10
60.31
59.96
59.23
58.35
56.76
55.40
54.76
54.14
 
75
June
61.10
60.72
60.57
59.45
58.72
57.64
56.64
55.55
52.00
 
70
July
61.97
60.73
60.48
59.90
59.18
58.04
56.48
55.67
54.80
 
74
August
61.20
60.74
60.33
60.15
59.76
58.61
57.30
56.13
54.14
 
78
September
61.70
60.67
60.49
60.29
59.43
58.24
56.82
55.87
53.94
 
71
October
61.74
61.40
60.84
60.46
59.83
58.45
57.44
55.77
54.30
 
70
November
61.47
60.95
60.69
60.43
59.35
57.72
56.80
55.24
52.00
 
72
December
61.80
61.14
60.47
59.87
59.01
57.95
56.91
55.85
54.59
 
69
 
       
Instantaneous lowest water level for period of record = 61.97 feet below land surface.

The current daily value for 03/22/2017 is 57.78 feet below land surface.

---- Provisional Data Subject to Revision ----

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