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Groundwater levels for the Nation

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  • 404041073283601
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USGS 404041073283601 N 6866. 1

Nassau County, New York
Latitude  40°40'39", Longitude  73°28'35" NAD27
Land-surface elevation 26.0 feet above NGVD29
The depth of the well is 626 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
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
1964-12-09 D62610 16.67NGVD291OUSGSSA
1964-12-09 D62611 15.48NAVD881OUSGSSA
1964-12-09 D720199.33  1OUSGSSA
1970-03-05 D62610 17.56NGVD291OUSGSSA
1970-03-05 D62611 16.37NAVD881OUSGSSA
1970-03-05 D720198.44  1OUSGSSA
1971-03-12 D62610 17.58NGVD291OUSGSSA
1971-03-12 D62611 16.39NAVD881OUSGSSA
1971-03-12 D720198.42  1OUSGSSA
1972-03-13 D62610 16.89NGVD291OUSGSSA
1972-03-13 D62611 15.70NAVD881OUSGSSA
1972-03-13 D720199.11  1OUSGSSA
1974-03-25 D62610 17.47NGVD291OUSGSSA
1974-03-25 D62611 16.28NAVD881OUSGSSA
1974-03-25 D720198.53  1OUSGSSA
1975-03-18 D62610 17.07NGVD291OUSGSSA
1975-03-18 D62611 15.88NAVD881OUSGSSA
1975-03-18 D720198.93  1OUSGSSA
1976-03-19 D62610 17.14NGVD291OUSGSSA
1976-03-19 D62611 15.95NAVD881OUSGSSA
1976-03-19 D720198.86  1OUSGSSA
1978-03-15 D62610 16.22NGVD291OUSGSSA
1978-03-15 D62611 15.03NAVD881OUSGSSA
1978-03-15 D720199.78  1OUSGSSA
1979-03-21 D62610 17.90NGVD291OUSGSSA
1979-03-21 D62611 16.71NAVD881OUSGSSA
1979-03-21 D720198.10  1OUSGSSA
1980-03-07 D62610 16.23NGVD291OUSGSSA
1980-03-07 D62611 15.04NAVD881OUSGSSA
1980-03-07 D720199.77  1OUSGSSA
1982-03-0913:05 UTCm62610 16.24NGVD291OUSGSSA
1982-03-0913:05 UTCm62611 15.05NAVD881OUSGSSA
1982-03-0913:05 UTCm720199.76  1OUSGSSA
1983-03-0414:00 UTCm62610 15.92NGVD291OUSGSSA
1983-03-0414:00 UTCm62611 14.73NAVD881OUSGSSA
1983-03-0414:00 UTCm7201910.08  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.