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Groundwater levels for the Nation

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  • 404421073370501
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USGS 404421073370501 N 9953. 1

Nassau County, New York
Latitude  40°44'21", Longitude  73°37'05" NAD27
Land-surface elevation 94.2 feet above NGVD29
The depth of the well is 54 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 Glacial Aquifer, Upper (112GLCLU) 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
1982-08-1915:40 UTCm62610 55.07NGVD291OUSGSSA
1982-08-1915:40 UTCm62611 53.92NAVD881OUSGSSA
1982-08-1915:40 UTCm7201939.13  1OUSGSSA
1982-11-17 D62610 54.84NGVD291OUSGSSA
1982-11-17 D62611 53.69NAVD881OUSGSSA
1982-11-17 D7201939.36  1OUSGSSA
1983-03-1519:15 UTCm62610 55.21NGVD291OUSGSSA
1983-03-1519:15 UTCm62611 54.06NAVD881OUSGSSA
1983-03-1519:15 UTCm7201938.99  1OUSGSSA
1983-03-3115:36 UTCm62610 55.83NGVD291OUSGSSA
1983-03-3115:36 UTCm62611 54.68NAVD881OUSGSSA
1983-03-3115:36 UTCm7201938.37  1OUSGSSA
1983-04-1421:50 UTCm62610 56.44NGVD291OUSGSSA
1983-04-1421:50 UTCm62611 55.29NAVD881OUSGSSA
1983-04-1421:50 UTCm7201937.76  1OUSGSSA
1983-08-0413:00 UTCm62610 58.02NGVD291OUSGSSA
1983-08-0413:00 UTCm62611 56.87NAVD881OUSGSSA
1983-08-0413:00 UTCm7201936.18  1OUSGSSA
1983-08-3116:55 UTCm62610 57.88NGVD291OUSGSSA
1983-08-3116:55 UTCm62611 56.73NAVD881OUSGSSA
1983-08-3116:55 UTCm7201936.32  1OUSGSSA
1984-04-2514:25 UTCm62610 60.10NGVD291OUSGSSA
1984-04-2514:25 UTCm62611 58.95NAVD881OUSGSSA
1984-04-2514:25 UTCm7201934.10  1OUSGSSA
1984-04-3016:00 UTCm62610 60.58NGVD291OUSGSSA
1984-04-3016:00 UTCm62611 59.43NAVD881OUSGSSA
1984-04-3016:00 UTCm7201933.62  1OUSGSSA
1984-08-0816:34 UTCm62610 64.28NGVD291OUSGSSA
1984-08-0816:34 UTCm62611 63.13NAVD881OUSGSSA
1984-08-0816:34 UTCm7201929.92  1OUSGSSA
1987-05-2015:05 UTCm62610 58.64NGVD291OUSGSSA
1987-05-2015:05 UTCm62611 57.49NAVD881OUSGSSA
1987-05-2015:05 UTCm7201935.56  1OUSGSSA
1987-07-2816:15 UTCm62610 58.36NGVD291OUSGSSA
1987-07-2816:15 UTCm62611 57.21NAVD881OUSGSSA
1987-07-2816:15 UTCm7201935.84  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.