Latitude 40°26'43", Longitude 75°15'05" NAD27 Bucks County, Pennsylvania, Hydrologic Unit 02040105
Land surface altitude: 490 feet above sea level NGVD29. Well completed in "Early Mesozoic basin aquifers" (N300ERLMZC) national aquifer. Well completed in "BRUNSWICK FORMATION" (231BRCK) local aquifer
STATION.--402643075150501 BUCKS COUNTY, local wellnumber BK929 LOCATION.--Lat 40 26'43, long 75 15'05",Hydrologic Unit 02040105, at Nockamixon State Park. OWNER.--U.S. Geological Survey. AQUIFER.--Shale of Brunswick Formation of LateTriassic age. WELL CHARACTERISTICS.--Drilled observation artesianwell, diameter 6 in., depth 116 ft, cased to 27 ft, open hole. INSTRUMENTATION.--Electronic data logger with60-minute recording interval. DATUM.--Elevation of land surface is 490 ft above sealevel, from topographic map. Measuring point: Top of plywood shelf, 3.0ft above land-surface datum. Prior to Mar. 17, 1980, top of casing,1.05 ft above land-surface datum. Prior to June 1970, land surfacedatum was approximately 16 feet lower. REMARKS.--Daily maximum, minimum, and mean waterlevels since October 1994 are available from the District Office. PERIOD OF RECORD.--November 1967 to currentyear. COOPERATION.--Funding for the operation of thisstation is provided by the Pennsylvania Department of EnvironmentalProtection and the U.S. Geological Survey.
Site Statistics
Most recent data value: 41.59 on 11/23/2009
Period of Record Monthly Statistics for 402643075150501 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
55.53
51.55
47.98
44.21
42.18
40.67
38.39
42
Feb
54.90
50.00
46.73
43.69
42.20
40.07
38.31
39
Mar
54.10
50.09
46.18
42.56
41.60
40.03
38.04
42
Apr
52.44
48.78
45.13
41.84
40.77
39.94
37.43
41
May
53.25
49.78
44.98
42.23
40.90
39.96
38.13
41
Jun
58.74
51.55
46.90
43.05
41.82
40.08
39.95
42
Jul
55.78
51.66
47.30
44.93
42.89
40.93
40.03
41
Aug
55.18
53.57
48.64
46.36
43.86
41.89
40.53
40
Sep
57.20
54.14
48.89
47.38
45.18
42.62
41.29
41
Oct
58.67
53.87
49.01
47.20
45.80
41.91
40.28
41
Nov
59.68
55.40
49.55
47.16
45.56
41.59
39.66
41
Dec
57.00
52.82
48.38
45.25
43.74
41.37
38.46
42
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Daily Groundwater Data
Most recent Provisional daily data value: 41.59 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
11/22/67
10/26/09
13,313
86
Highest Level
95-Pct
75-Pct
50-Pct
25-Pct
5-Pct
Lowest Level
36.96
39.77
42.06
44.81
47.52
53.10
59.75
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
06/27/67
10/29/09
107
Highest WL
Date of Highest WL
Lowest WL
Date of Lowest WL
37.22
04/20/05
58.74
06/27/67
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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
06/27/67
11/23/09
13,441
Highest WL
Date of Highest WL
Lowest WL
Date of Lowest WL
36.96
04/03/05
59.75
11/26/68
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