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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily Groundwater Levels
 
371653079552101 31G 1 SOW 008
LOCATION.--Latitude 37°16'53", Longitude 79°55'21", North American Datum of 1927
                    Roanoke City, Va., Hydrologic Unit 03010101.
WELL CHARACTERISTICS.--Well is located in Rome Formation of Cambrian age. Depth 55 ft.
PERIOD OF RECORD.--Continual data, March 2004 to current year. Periodic data, August 1966 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 371653079552101 plot. 31G 1
Provisional Data Subject to Revision

                    

The current daily value for 03/22/2017 is 18.9 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


                371653079552101     31G 1

   Lowest Level
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Highest Level
         
Years of record
January
19.06
18.83
18.76
18.67
18.01
17.65
17.14
16.03
14.69
 
75
February
19.09
18.97
18.86
18.67
18.17
17.72
17.28
17.11
12.36
 
73
March
19.29
19.02
18.88
18.71
18.25
17.72
17.24
17.06
15.86
 
81
April
19.15
18.96
18.88
18.71
18.37
17.90
17.30
17.04
14.69
 
77
May
19.04
18.97
18.87
18.76
18.53
17.92
17.50
17.26
17.11
 
76
June
19.29
18.96
18.87
18.79
18.54
17.98
17.49
17.12
16.84
 
71
July
19.06
18.97
18.89
18.74
18.31
17.82
17.39
17.18
15.86
 
74
August
19.21
18.96
18.91
18.75
18.51
18.00
17.63
17.32
16.34
 
77
September
19.03
18.96
18.89
18.77
18.46
17.82
17.61
17.00
15.93
 
73
October
19.29
18.95
18.89
18.72
18.47
17.99
17.36
16.52
12.36
 
71
November
19.09
19.00
18.93
18.73
18.34
17.66
17.10
16.65
14.21
 
72
December
19.09
18.90
18.86
18.72
18.44
17.89
17.60
17.36
16.96
 
73
 
       
Instantaneous lowest water level for period of record = 19.29 feet below land surface.

The current daily value for 03/22/2017 is 18.9 feet below land surface.

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

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