Latitude 42°48'41", Longitude 71°00'41" NAD27 Essex County, Massachusetts, Hydrologic Unit 01070002
Land surface altitude: 100.00 feet above sea level NGVD29. Well completed in "Sand and gravel aquifers (glaciated regions)" (N100GLCIAL) national aquifer. Well completed in "OUTWASH" (112OTSH) local aquifer
Period of Record Monthly Statistics for 424841071004101 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
14.97
13.87
13.26
12.61
11.43
10.28
9.62
49
Feb
14.14
13.49
12.84
11.94
11.03
9.95
8.98
49
Mar
13.27
12.85
12.19
11.20
10.48
9.03
6.80
49
Apr
12.94
12.18
11.01
9.43
8.65
8.02
7.06
49
May
12.87
11.82
11.21
10.03
9.21
8.91
8.53
49
Jun
13.15
12.52
11.84
11.07
10.31
9.02
8.62
49
Jul
13.53
13.29
12.74
12.20
11.71
10.72
9.75
50
Aug
14.77
13.80
13.50
13.15
12.75
12.05
11.12
49
Sep
14.31
14.15
13.89
13.66
13.35
13.09
11.40
49
Oct
14.55
14.28
14.20
13.80
13.21
12.99
10.90
50
Nov
14.82
14.43
14.09
13.50
12.64
12.15
9.08
49
Dec
14.94
14.15
13.64
12.83
12.16
10.47
8.94
49
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Daily Groundwater Data
Most recent Provisional daily data value: 13.43 on 10/25/09
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
10/17/84
10/28/08
7,978
90
Highest Level
95-Pct
75-Pct
50-Pct
25-Pct
5-Pct
Lowest Level
5.07
8.70
11.02
12.29
13.25
14.07
14.71
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
07/01/60
11/23/09
1,901
Highest WL
Date of Highest WL
Lowest WL
Date of Lowest WL
4.96
04/07/87
15.00
01/31/66
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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
07/01/60
11/23/09
10,507
Highest WL
Date of Highest WL
Lowest WL
Date of Lowest WL
4.96
04/07/87
15.00
02/10/66
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