Latitude 38°56'58", Longitude 77°22'01" NAD27 Fairfax County, Virginia, Hydrologic Unit 02070010
Land surface altitude: 395.00 feet above sea level NGVD29. Well completed in "Early Mesozoic basin aquifers" (N300ERLMZC) national aquifer. Well completed in "MANASSASS SANDSTONE" (231MNSS) local aquifer
Period of Record Monthly Statistics for 385638077220101 Depth to water level, feet below land surface All Approved Continuous & Periodic Data Used In Analysis
Note: Bold values in the table indicate closest statistic to the most recent data value.
Month
Lowest Level
10th %ile
25th %ile
50th %ile
75th %ile
90th %ile
Highest Level
Number of Years
Jan
24.50
15.85
14.76
13.28
11.41
10.29
9.93
32
Feb
23.29
14.78
13.76
12.46
10.78
9.89
8.87
29
Mar
22.05
14.26
12.35
11.01
9.34
8.39
8.00
31
Apr
19.28
13.54
11.60
10.11
9.41
8.70
8.10
33
May
15.23
13.00
12.03
11.30
9.96
9.44
9.07
32
Jun
15.03
14.38
13.69
12.86
12.14
11.10
8.55
32
Jul
16.12
15.80
14.87
14.23
13.10
12.42
11.49
32
Aug
19.82
17.06
16.19
15.27
14.27
13.55
12.77
31
Sep
22.41
17.48
16.67
15.86
14.93
13.86
12.68
33
Oct
23.50
17.81
16.77
15.76
15.29
13.65
9.59
34
Nov
24.31
17.16
16.01
15.44
14.55
12.47
9.94
32
Dec
24.74
16.12
15.37
14.66
13.28
10.99
9.46
32
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Daily Groundwater Data
Most recent Provisional daily data value: 15.44 on 11/23/09
Summary Statistics for Period of Continuous Record
Depth to water level, feet below land surface
Approved Daily Maximum Values Data Used in Analysis
Begin Date
End Date
Days
% Complete
10/01/95
07/06/09
4,542
90
Highest Level
95-Pct
75-Pct
50-Pct
25-Pct
5-Pct
Lowest Level
7.54
9.35
11.90
13.88
15.45
18.81
24.92
Daily Data Options
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Periodic Groundwater Data
Summary Statistics for Period of Record Periodic Water Levels
Depth to water level, feet below land surface
Approved Periodic Water Level Values
Begin Date
End Date
Number of Values
10/28/76
10/07/09
1,546
Highest WL
Date of Highest WL
Lowest WL
Date of Lowest WL
6.47
03/30/84
24.60
12/03/98
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Period of Record - All Data Types
Summary Statistics for Period of Record - All Data Types
Depth to water level, feet below land surface
Begin Date
End Date
Number of Values
10/28/76
11/23/09
6,075
Highest WL
Date of Highest WL
Lowest WL
Date of Lowest WL
6.47
03/30/84
24.92
12/08/98
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