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Groundwater levels for the Nation

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Agency code = usgs
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  • 392012077091501
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USGS 392012077091501 HO Ab 41

Howard County, Maryland
Latitude  39°20'12", Longitude  77°09'15" NAD27
Land-surface elevation 825 feet above NGVD29
The depth of the well is 610 feet below land surface.
The depth of the hole is 610 feet below land surface.
This well is completed in the Gillis Formation (300GLLS) local aquifer.
Output formats
Table of data
Tab-separated data
Graph of data
Reselect period
Date Time
?
 
Water-level
date-time
accuracy
?
 
Parameter
code 		Water
level,
feet
below
land
surface		 Water
level,
feet
above
specific
vertical
datum		 Referenced
vertical
datum
?
 
Status
?
 
Method of
measurement
?
 
Measuring
agency
?
 
Source of
measurement
?
 
Water-level
approval
status
1987-08-11 D62610 775.19NGVD291Z  A
1987-08-11 D62611 774.52NAVD881Z  A
1987-08-11 D7201949.81  1Z  A
1987-09-29 D62610 774.95NGVD291Z  A
1987-09-29 D62611 774.28NAVD881Z  A
1987-09-29 D7201950.05  1Z  A
1987-11-05 D62610 774.94NGVD291Z  A
1987-11-05 D62611 774.27NAVD881Z  A
1987-11-05 D7201950.06  1Z  A
1987-11-30 D62610 775.04NGVD291Z  A
1987-11-30 D62611 774.37NAVD881Z  A
1987-11-30 D7201949.96  1Z  A
1988-01-06 D62610 775.91NGVD291Z  A
1988-01-06 D62611 775.24NAVD881Z  A
1988-01-06 D7201949.09  1Z  A
1988-02-05 D62610 776.68NGVD291Z  A
1988-02-05 D62611 776.01NAVD881Z  A
1988-02-05 D7201948.32  1Z  A
1988-03-02 D62610 777.63NGVD291Z  A
1988-03-02 D62611 776.96NAVD881Z  A
1988-03-02 D7201947.37  1Z  A
1988-03-31 D62610 778.28NGVD291Z  A
1988-03-31 D62611 777.61NAVD881Z  A
1988-03-31 D7201946.72  1Z  A
1988-05-02 D62610 778.47NGVD291Z  A
1988-05-02 D62611 777.80NAVD881Z  A
1988-05-02 D7201946.53  1Z  A
1988-06-02 D62610 779.47NGVD291Z  A
1988-06-02 D62611 778.80NAVD881Z  A
1988-06-02 D7201945.53  1Z  A
1988-07-01 D62610 780.40NGVD291Z  A
1988-07-01 D62611 779.73NAVD881Z  A
1988-07-01 D7201944.60  1Z  A
1988-08-01 D62610 779.95NGVD291Z  A
1988-08-01 D62611 779.28NAVD881Z  A
1988-08-01 D7201945.05  1Z  A
1988-08-31 D62610 779.22NGVD291Z  A
1988-08-31 D62611 778.55NAVD881Z  A
1988-08-31 D7201945.78  1Z  A
1988-09-29 D62610 778.56NGVD291Z  A
1988-09-29 D62611 777.89NAVD881Z  A
1988-09-29 D7201946.44  1Z  A
1988-10-31 D62610 777.80NGVD291Z  A
1988-10-31 D62611 777.13NAVD881Z  A
1988-10-31 D7201947.20  1Z  A
1988-11-30 D62610 777.23NGVD291Z  A
1988-11-30 D62611 776.56NAVD881Z  A
1988-11-30 D7201947.77  1Z  A
1988-12-30 D62610 776.65NGVD291Z  A
1988-12-30 D62611 775.98NAVD881Z  A
1988-12-30 D7201948.35  1Z  A
1989-01-30 D62610 776.35NGVD291Z  A
1989-01-30 D62611 775.68NAVD881Z  A
1989-01-30 D7201948.65  1Z  A
1989-03-02 D62610 776.31NGVD291Z  A
1989-03-02 D62611 775.64NAVD881Z  A
1989-03-02 D7201948.69  1Z  A

Explanation
SectionCodeDescription
Water-level date-time accuracyDDate is accurate to the Day
Parameter code62610Groundwater level above NGVD 1929, feet
Parameter code62611Groundwater level above NAVD 1988, feet
Parameter code72019Depth to water level, feet below land surface
Referenced vertical datumNAVD88North American Vertical Datum of 1988
Referenced vertical datumNGVD29National Geodetic Vertical Datum of 1929
Status1Static
Method of measurementZOther.
Measuring agencyNot determined
Source of measurementNot determined
Water-level approval statusAApproved for publication -- Processing and review completed.