Latitude 40°24'52", Longitude 78°27'13" NAD27 Blair County, Pennsylvania, Hydrologic Unit 02050302
Land surface altitude: 1,130.00 feet above sea level NGVD29. Well completed in "Valley and Ridge aquifers" (N500VLYRDG) national aquifer. Well completed in "BRALLIER FORMATION" (341BRLR) local aquifer
STATION.--402452078271301 BLAIR COUNTY, local wellnumber BA74 LOCATION.--Lat 4024'52", long7827'13", Hydrologic Unit 02050302, at Allegheny PortageRailroad National Historic Site, and southwest of Duncansville. OWNER.--U.S. Geological Survey. AQUIFER.--Brallier Formation, Late Devonian age. WELL CHARACTERISTICS.--Drilled observation well,diameter 6 in., depth 150 ft, cased to 14 ft, open hole. INSTRUMENTATION.--Data collection platform with60-minute recording interval since December 2000. DATUM.--Elevation of land surface is 1,130 ft abovesea level, from topographic map. Measuring point: Top of casing, 1.8 ftabove land-surface datum; 3.1 ft above land-surface datum since June10, 1999. REMARKS.--Daily maximum, minimum, and mean waterlevels since June 1999 are available from the District Office. PERIOD OF RECORD.--August 1969 to current year. 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: 11.36 on 11/23/2009
Period of Record Monthly Statistics for 402452078271301 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
17.68
14.39
13.49
12.52
11.56
10.93
10.29
39
Feb
15.40
14.36
12.95
12.32
11.38
10.76
10.40
39
Mar
14.80
13.27
12.14
11.43
10.93
10.34
9.86
39
Apr
14.36
13.05
12.16
11.48
10.76
10.37
9.88
40
May
15.04
14.02
12.85
11.81
11.03
10.73
9.95
38
Jun
22.00
15.11
13.70
12.41
11.74
11.07
10.55
41
Jul
16.04
15.48
14.29
13.17
12.49
11.44
10.40
39
Aug
17.01
16.54
14.98
14.04
13.03
11.87
10.90
40
Sep
17.49
16.85
15.70
14.12
12.97
11.81
10.51
41
Oct
18.65
17.15
15.76
13.66
12.69
11.39
10.72
41
Nov
17.49
15.83
14.69
13.14
11.80
11.24
10.45
40
Dec
17.88
14.18
13.34
12.15
11.45
10.86
10.32
40
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Daily Groundwater Data
Most recent Provisional daily data value: 11.36 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
09/20/19
10/13/09
13,482
40
Highest Level
95-Pct
75-Pct
50-Pct
25-Pct
5-Pct
Lowest Level
9.41
10.46
11.53
12.61
13.97
16.07
18.65
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
06/25/69
10/14/09
131
Highest WL
Date of Highest WL
Lowest WL
Date of Lowest WL
9.69
03/14/07
24.12
06/24/97
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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
09/20/19
11/23/09
13,633
Highest WL
Date of Highest WL
Lowest WL
Date of Lowest WL
9.41
04/16/07
24.12
06/24/97
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