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Groundwater levels for the Nation

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USGS 404251073404601 N 9984. 1

Nassau County, New York
Latitude  40°42'51", Longitude  73°40'46" NAD27
Land-surface elevation 78.5 feet above NGVD29
The depth of the well is 60 feet below land surface.
The depth of the hole is 60 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.
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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
1987-09-0217:00 UTCm62610 32.15NGVD291OUSGSSA
1987-09-0217:00 UTCm62611 31.03NAVD881OUSGSSA
1987-09-0217:00 UTCm7201946.35  1OUSGSSA
1988-01-2919:30 UTCm62610 31.48NGVD291OUSGSSA
1988-01-2919:30 UTCm62611 30.36NAVD881OUSGSSA
1988-01-2919:30 UTCm7201947.02  1OUSGSSA
1988-02-2315:00 UTCm62610 31.47NGVD291OUSGSSA
1988-02-2315:00 UTCm62611 30.35NAVD881OUSGSSA
1988-02-2315:00 UTCm7201947.03  1OUSGSSA
1988-03-2914:10 UTCm62610 31.52NGVD291OUSGSSA
1988-03-2914:10 UTCm62611 30.40NAVD881OUSGSSA
1988-03-2914:10 UTCm7201946.98  1OUSGSSA
1988-04-2514:25 UTCm62610 31.46NGVD291OUSGSSA
1988-04-2514:25 UTCm62611 30.34NAVD881OUSGSSA
1988-04-2514:25 UTCm7201947.04  1OUSGSSA
1988-05-2619:00 UTCm62610 31.49NGVD291OUSGSSA
1988-05-2619:00 UTCm62611 30.37NAVD881OUSGSSA
1988-05-2619:00 UTCm7201947.01  1OUSGSSA
1988-06-2715:50 UTCm62610 30.90NGVD291OUSGSSA
1988-06-2715:50 UTCm62611 29.78NAVD881OUSGSSA
1988-06-2715:50 UTCm7201947.60  1OUSGSSA
1988-07-2615:30 UTCm62610 30.69NGVD291OUSGSSA
1988-07-2615:30 UTCm62611 29.57NAVD881OUSGSSA
1988-07-2615:30 UTCm7201947.81  1OUSGSSA
1988-08-3115:25 UTCm62610 30.43NGVD291OUSGSSA
1988-08-3115:25 UTCm62611 29.31NAVD881OUSGSSA
1988-08-3115:25 UTCm7201948.07  1OUSGSSA
1988-09-2919:25 UTCm62610 30.42NGVD291OUSGSSA
1988-09-2919:25 UTCm62611 29.30NAVD881OUSGSSA
1988-09-2919:25 UTCm7201948.08  1OUSGSSA
1988-10-2714:45 UTCm62610 30.41NGVD291OUSGSSA
1988-10-2714:45 UTCm62611 29.29NAVD881OUSGSSA
1988-10-2714:45 UTCm7201948.09  1OUSGSSA
1988-11-2814:15 UTCm62610 30.68NGVD291OUSGSSA
1988-11-2814:15 UTCm62611 29.56NAVD881OUSGSSA
1988-11-2814:15 UTCm7201947.82  1OUSGSSA
1988-12-2016:00 UTCm62610 31.03NGVD291OUSGSSA
1988-12-2016:00 UTCm62611 29.91NAVD881OUSGSSA
1988-12-2016:00 UTCm7201947.47  1OUSGSSA

Explanation
SectionCodeDescription
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.