Latitude 42°28'12", Longitude 71°24'44" NAD27 Middlesex County, Massachusetts, Hydrologic Unit 01070004
Land surface altitude: 153.00 feet above sea level NGVD29. Well completed in "Sand and gravel aquifers (glaciated regions)" (N100GLCIAL) national aquifer. Well completed in "ICE-CONTACT DEPOSITS, INCLUDING ESKERS AND KAMES" (112ICCC) local aquifer
Period of Record Monthly Statistics for 422812071244401 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
21.86
20.69
19.76
19.01
17.63
16.82
15.78
45
Feb
21.08
20.55
19.58
18.52
17.45
16.64
15.31
43
Mar
20.46
20.08
19.17
17.83
17.22
16.50
15.94
43
Apr
20.00
19.58
18.36
17.48
16.54
15.69
14.98
45
May
20.10
19.67
18.44
17.72
16.82
15.98
15.61
44
Jun
20.34
19.60
18.87
18.00
17.25
16.05
14.82
43
Jul
20.62
19.78
19.34
18.75
18.00
16.97
15.48
43
Aug
21.00
20.38
19.85
19.36
18.55
17.65
16.78
44
Sep
21.36
20.65
20.09
19.79
19.15
18.47
17.07
45
Oct
21.50
20.68
20.37
19.88
19.21
18.64
17.00
44
Nov
21.56
20.96
20.37
19.88
19.07
18.14
17.02
44
Dec
21.72
20.58
20.13
19.54
18.41
17.20
16.44
42
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Daily Groundwater Data
Most recent Provisional daily data value: 18.37 on 11/22/09
Summary Statistics for Period of Continuous Record
Depth to water level, feet below land surface
Approved Daily Mean Values Data Used in Analysis
Begin Date
End Date
Days
% Complete
10/23/00
09/30/09
2,991
91
Max Level
Mean
Min Level
14.60
17.88
21.10
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
11/10/64
10/26/09
534
Highest WL
Date of Highest WL
Lowest WL
Date of Lowest WL
14.78
06/27/06
21.86
01/26/66
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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
11/10/64
11/22/09
3,532
Highest WL
Date of Highest WL
Lowest WL
Date of Lowest WL
14.60
06/19/06
21.86
01/26/66
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