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Groundwater levels for the Nation

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  • 404621073382901
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USGS 404621073382901 N 3732. 2

Nassau County, New York
Latitude  40°46'44", Longitude  73°38'39" NAD27
Land-surface elevation 140.0 feet above NGVD29
The depth of the well is 355 feet below land surface.
This well is completed in the Northern Atlantic Coastal Plain aquifer system (S100NATLCP) national aquifer.
This well is completed in the Magothy Aquifer (211MAGT) local aquifer.
Output formats
Table of 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
1957-04-15 D62610 72.84NGVD291OUSGSSA
1957-04-15 D62611 71.73NAVD881OUSGSSA
1957-04-15 D7201967.16  1OUSGSSA
1964-12-14 D62610 63.69NGVD291OUSGSSA
1964-12-14 D62611 62.58NAVD881OUSGSSA
1964-12-14 D7201976.31  1OUSGSSA
1969-11-24 D62610 56.75NGVD291OUSGSSA
1969-11-24 D62611 55.64NAVD881OUSGSSA
1969-11-24 D7201983.25  1OUSGSSA
1970-03-02 D62610 56.88NGVD291OUSGSSA
1970-03-02 D62611 55.77NAVD881OUSGSSA
1970-03-02 D7201983.12  1OUSGSSA
1971-03-09 D62610 56.37NGVD291OUSGSSA
1971-03-09 D62611 55.26NAVD881OUSGSSA
1971-03-09 D7201983.63  1OUSGSSA
1972-03-13 D62610 55.08NGVD291OUSGSSA
1972-03-13 D62611 53.97NAVD881OUSGSSA
1972-03-13 D7201984.92  1OUSGSSA
1973-03-20 D62610 54.92NGVD291OUSGSSA
1973-03-20 D62611 53.81NAVD881OUSGSSA
1973-03-20 D7201985.08  1OUSGSSA
1976-03-17 D62610 29.86NGVD291OUSGSSA
1976-03-17 D62611 28.75NAVD881OUSGSSA
1976-03-17 D72019110.14  1OUSGSSA
1977-03-23 D62610 32.56NGVD291OUSGSSA
1977-03-23 D62611 31.45NAVD881OUSGSSA
1977-03-23 D72019107.44  1OUSGSSA
1978-03-17 D62610 30.79NGVD291OUSGSSA
1978-03-17 D62611 29.68NAVD881OUSGSSA
1978-03-17 D72019109.21  1OUSGSSA
1980-03-1018:55 UTCm62610 60.36NGVD291OUSGSSA
1980-03-1018:55 UTCm62611 59.25NAVD881OUSGSSA
1980-03-1018:55 UTCm7201979.64  1OUSGSSA

Explanation
SectionCodeDescription
Water-level date-time accuracyDDate is accurate to the Day
Water-level date-time accuracymDate is accurate to the Minute
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 measurementOObserved.
Measuring agencyUSGSU.S. Geological Survey
Source of measurementSMeasured by personnel of reporting agency.
Water-level approval statusAApproved for publication -- Processing and review completed.