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Groundwater levels for the Nation

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USGS 404907073435001 N 9840. 1

Nassau County, New York
Latitude  40°49'07", Longitude  73°43'50" NAD27
Land-surface elevation 21.4 feet above NGVD29
The depth of the well is 313 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 Lloyd Aquifer (211LLYD) 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
1982-01-0818:05 UTCm62610 -4.82NGVD291OUSGSSA
1982-01-0818:05 UTCm62611 -5.90NAVD881OUSGSSA
1982-01-0818:05 UTCm7201926.22  1OUSGSSA
1982-01-1508:45 UTCm62610 -2.20NGVD291OUSGSSA
1982-01-1508:45 UTCm62611 -3.28NAVD881OUSGSSA
1982-01-1508:45 UTCm7201923.60  1OUSGSSA
1983-01-0611:10 UTCm62610 -2.01NGVD294OUSGSSA
1983-01-0611:10 UTCm62611 -3.09NAVD884OUSGSSA
1983-01-0611:10 UTCm7201923.41  4OUSGSSA
1984-01-1010:55 UTCm62610 -6.47NGVD294OUSGSSA
1984-01-1010:55 UTCm62611 -7.55NAVD884OUSGSSA
1984-01-1010:55 UTCm7201927.87  4OUSGSSA
1985-01-1409:00 UTCm62610 -0.04NGVD294OUSGSSA
1985-01-1409:00 UTCm62611 -1.12NAVD884OUSGSSA
1985-01-1409:00 UTCm7201921.44  4OUSGSSA
1986-02-1017:10 UTCm62610 -1.59NGVD294OUSGSSA
1986-02-1017:10 UTCm62611 -2.67NAVD884OUSGSSA
1986-02-1017:10 UTCm7201922.99  4OUSGSSA
1987-01-1314:45 UTCm62610 -2.23NGVD294OUSGSSA
1987-01-1314:45 UTCm62611 -3.31NAVD884OUSGSSA
1987-01-1314:45 UTCm7201923.63  4OUSGSSA
1988-02-1916:50 UTCm62610 5.47NGVD294OUSGSSA
1988-02-1916:50 UTCm62611 4.39NAVD884OUSGSSA
1988-02-1916:50 UTCm7201915.93  4OUSGSSA
1988-12-2718:40 UTCm62610 -3.96NGVD294OUSGSSA
1988-12-2718:40 UTCm62611 -5.04NAVD884OUSGSSA
1988-12-2718:40 UTCm7201925.36  4OUSGSSA
1990-03-2614:50 UTCm62610 -0.77NGVD294OUSGSSA
1990-03-2614:50 UTCm62611 -1.85NAVD884OUSGSSA
1990-03-2614:50 UTCm7201922.17  4OUSGSSA
1991-03-1917:44 UTCm62610 -0.97NGVD294OUSGSSA
1991-03-1917:44 UTCm62611 -2.05NAVD884OUSGSSA
1991-03-1917:44 UTCm7201922.37  4OUSGSSA
1991-11-0415:58 UTCm62610 -3.62NGVD291OUSGSSA
1991-11-0415:58 UTCm62611 -4.70NAVD881OUSGSSA
1991-11-0415:58 UTCm7201925.02  1OUSGSSA
1992-03-1614:30 UTCm62610 1.24NGVD294OUSGSSA
1992-03-1614:30 UTCm62611 0.16NAVD884OUSGSSA
1992-03-1614:30 UTCm7201920.16  4OUSGSSA
1992-05-1918:19 UTCm62610 3.65NGVD294OUSGSSA
1992-05-1918:19 UTCm62611 2.57NAVD884OUSGSSA
1992-05-1918:19 UTCm7201917.75  4OUSGSSA
1992-08-2514:46 UTCm62610 -4.97NGVD294OUSGSSA
1992-08-2514:46 UTCm62611 -6.05NAVD884OUSGSSA
1992-08-2514:46 UTCm7201926.37  4OUSGSSA
1992-12-0815:13 UTCm62610 -1.38NGVD294OUSGSSA
1992-12-0815:13 UTCm62611 -2.46NAVD884OUSGSSA
1992-12-0815:13 UTCm7201922.78  4OUSGSSA
1993-03-2518:05 UTCm62610 0.98NGVD294OUSGSSA
1993-03-2518:05 UTCm62611 -0.10NAVD884OUSGSSA
1993-03-2518:05 UTCm7201920.42  4OUSGSSA
1993-06-1815:48 UTCm62610 -8.17NGVD294OUSGSSA
1993-06-1815:48 UTCm62611 -9.25NAVD884OUSGSSA
1993-06-1815:48 UTCm7201929.57  4OUSGSSA
1993-09-3017:12 UTCm62610 5.79NGVD294OUSGSSA
1993-09-3017:12 UTCm62611 4.71NAVD884OUSGSSA
1993-09-3017:12 UTCm7201915.61  4OUSGSSA

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
Status4GWTideAffected
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.