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Groundwater levels for the Nation

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Agency code = usgs
site_no list =
  • 391907077092801
Minimum number of levels = 1
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USGS 391907077092801 HO Bb 58

Howard County, Maryland
Latitude  39°19'07", Longitude  77°09'28" NAD27
Land-surface elevation 785 feet above NGVD29
The depth of the well is 220 feet below land surface.
The depth of the hole is 220 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
1987-09-29 D62610 733.07NGVD291Z  A
1987-09-29 D62611 732.39NAVD881Z  A
1987-09-29 D7201951.93  1Z  A
1987-11-05 D62610 732.16NGVD291Z  A
1987-11-05 D62611 731.48NAVD881Z  A
1987-11-05 D7201952.84  1Z  A
1987-11-30 D62610 731.64NGVD291Z  A
1987-11-30 D62611 730.96NAVD881Z  A
1987-11-30 D7201953.36  1Z  A
1988-01-06 D62610 734.18NGVD291Z  A
1988-01-06 D62611 733.50NAVD881Z  A
1988-01-06 D7201950.82  1Z  A
1988-02-05 D62610 735.95NGVD291Z  A
1988-02-05 D62611 735.27NAVD881Z  A
1988-02-05 D7201949.05  1Z  A
1988-03-02 D62610 736.91NGVD291Z  A
1988-03-02 D62611 736.23NAVD881Z  A
1988-03-02 D7201948.09  1Z  A
1988-03-31 D62610 738.14NGVD291Z  A
1988-03-31 D62611 737.46NAVD881Z  A
1988-03-31 D7201946.86  1Z  A
1988-05-02 D62610 737.77NGVD291Z  A
1988-05-02 D62611 737.09NAVD881Z  A
1988-05-02 D7201947.23  1Z  A
1988-06-02 D62610 747.80NGVD291Z  A
1988-06-02 D62611 747.12NAVD881Z  A
1988-06-02 D7201937.20  1Z  A
1988-07-01 D62610 744.21NGVD291Z  A
1988-07-01 D62611 743.53NAVD881Z  A
1988-07-01 D7201940.79  1Z  A
1988-08-01 D62610 738.76NGVD291Z  A
1988-08-01 D62611 738.08NAVD881Z  A
1988-08-01 D7201946.24  1Z  A
1988-08-31 D62610 735.14NGVD291Z  A
1988-08-31 D62611 734.46NAVD881Z  A
1988-08-31 D7201949.86  1Z  A
1988-09-29 D62610 732.70NGVD291Z  A
1988-09-29 D62611 732.02NAVD881Z  A
1988-09-29 D7201952.30  1Z  A
1988-10-31 D62610 730.12NGVD291Z  A
1988-10-31 D62611 729.44NAVD881Z  A
1988-10-31 D7201954.88  1Z  A
1988-11-30 D62610 728.84NGVD291Z  A
1988-11-30 D62611 728.16NAVD881Z  A
1988-11-30 D7201956.16  1Z  A
1988-12-30 D62610 728.76NGVD291Z  A
1988-12-30 D62611 728.08NAVD881Z  A
1988-12-30 D7201956.24  1Z  A
1989-01-30 D62610 726.70NGVD291Z  A
1989-01-30 D62611 726.02NAVD881Z  A
1989-01-30 D7201958.30  1Z  A
1989-03-02 D62610 729.85NGVD291Z  A
1989-03-02 D62611 729.17NAVD881Z  A
1989-03-02 D7201955.15  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.