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Groundwater levels for the Nation

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Agency code = usgs
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  • 390857076523101
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USGS 390857076523101 HO De 77

Howard County, Maryland
Latitude  39°08'57", Longitude  76°52'31" NAD27
Land-surface elevation 385 feet above NGVD29
The depth of the well is 130 feet below land surface.
The depth of the hole is 130 feet below land surface.
This well is completed in the Piedmont and Blue Ridge crystalline-rock aquifers (N400PDMBRX) national aquifer.
This well is completed in the Sykesville Formation, Gneiss Member (360SKVLG) local aquifer.
Output formats
Table of data
Tab-separated data
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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
1988-11-07 D62610 373.60NGVD291Z  A
1988-11-07 D62611 372.90NAVD881Z  A
1988-11-07 D7201911.40  1Z  A
1988-12-02 D62610 374.26NGVD291Z  A
1988-12-02 D62611 373.56NAVD881Z  A
1988-12-02 D7201910.74  1Z  A
1989-01-02 D62610 374.02NGVD291Z  A
1989-01-02 D62611 373.32NAVD881Z  A
1989-01-02 D7201910.98  1Z  A
1989-02-01 D62610 375.43NGVD291Z  A
1989-02-01 D62611 374.73NAVD881Z  A
1989-02-01 D720199.57  1Z  A
1989-03-01 D62610 376.59NGVD291Z  A
1989-03-01 D62611 375.89NAVD881Z  A
1989-03-01 D720198.41  1Z  A
1989-04-07 D62610 378.45NGVD291Z  A
1989-04-07 D62611 377.75NAVD881Z  A
1989-04-07 D720196.55  1Z  A
1989-05-04 D62610 378.87NGVD291Z  A
1989-05-04 D62611 378.17NAVD881Z  A
1989-05-04 D720196.13  1Z  A
1989-05-31 D62610 381.97NGVD291Z  A
1989-05-31 D62611 381.27NAVD881Z  A
1989-05-31 D720193.03  1Z  A
1989-06-30 D62610 381.81NGVD291Z  A
1989-06-30 D62611 381.11NAVD881Z  A
1989-06-30 D720193.19  1Z  A
1989-08-01 D62610 380.70NGVD291Z  A
1989-08-01 D62611 380.00NAVD881Z  A
1989-08-01 D720194.30  1Z  A
1989-09-01 D62610 378.56NGVD291Z  A
1989-09-01 D62611 377.86NAVD881Z  A
1989-09-01 D720196.44  1Z  A
1989-09-28 D62610 378.66NGVD291Z  A
1989-09-28 D62611 377.96NAVD881Z  A
1989-09-28 D720196.34  1Z  A
1989-11-02 D62610 379.42NGVD291Z  A
1989-11-02 D62611 378.72NAVD881Z  A
1989-11-02 D720195.58  1Z  A
1989-12-01 D62610 379.21NGVD291Z  A
1989-12-01 D62611 378.51NAVD881Z  A
1989-12-01 D720195.79  1Z  A
1990-01-02 D62610 378.87NGVD291Z  A
1990-01-02 D62611 378.17NAVD881Z  A
1990-01-02 D720196.13  1Z  A
1990-01-31 D62610 380.58NGVD291Z  A
1990-01-31 D62611 379.88NAVD881Z  A
1990-01-31 D720194.42  1Z  A
1990-03-02 D62610 380.13NGVD291Z  A
1990-03-02 D62611 379.43NAVD881Z  A
1990-03-02 D720194.87  1Z  A
1990-04-02 D62610 379.92NGVD291Z  A
1990-04-02 D62611 379.22NAVD881Z  A
1990-04-02 D720195.08  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.