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Groundwater levels for the Nation

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  • 404423073363901
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USGS 404423073363901 N 9960. 1

Nassau County, New York
Latitude  40°44'23", Longitude  73°36'39" NAD27
Land-surface elevation 86.0 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.
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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
1982-08-1919:00 UTCm62610 57.50NGVD291OUSGSSA
1982-08-1919:00 UTCm62611 56.35NAVD881OUSGSSA
1982-08-1919:00 UTCm7201928.50  1OUSGSSA
1982-11-17 D62610 56.65NGVD291OUSGSSA
1982-11-17 D62611 55.50NAVD881OUSGSSA
1982-11-17 D7201929.35  1OUSGSSA
1983-03-3116:05 UTCm62610 57.82NGVD291OUSGSSA
1983-03-3116:05 UTCm62611 56.67NAVD881OUSGSSA
1983-03-3116:05 UTCm7201928.18  1OUSGSSA
1983-04-1418:05 UTCm62610 58.44NGVD291OUSGSSA
1983-04-1418:05 UTCm62611 57.29NAVD881OUSGSSA
1983-04-1418:05 UTCm7201927.56  1OUSGSSA
1983-08-1120:10 UTCm62610 58.28NGVD291OUSGSSA
1983-08-1120:10 UTCm62611 57.13NAVD881OUSGSSA
1983-08-1120:10 UTCm7201927.72  1OUSGSSA
1983-08-3118:37 UTCm62610 56.75NGVD291OUSGSSA
1983-08-3118:37 UTCm62611 55.60NAVD881OUSGSSA
1983-08-3118:37 UTCm7201929.25  1OUSGSSA
1984-04-0919:40 UTCm62610 61.32NGVD291OUSGSSA
1984-04-0919:40 UTCm62611 60.17NAVD881OUSGSSA
1984-04-0919:40 UTCm7201924.68  1OUSGSSA
1984-04-2517:46 UTCm62610 61.96NGVD291OUSGSSA
1984-04-2517:46 UTCm62611 60.81NAVD881OUSGSSA
1984-04-2517:46 UTCm7201924.04  1OUSGSSA
1984-08-0817:45 UTCm62610 64.27NGVD291OUSGSSA
1984-08-0817:45 UTCm62611 63.12NAVD881OUSGSSA
1984-08-0817:45 UTCm7201921.73  1OUSGSSA
1985-05-1015:38 UTCm62610 61.37NGVD291OUSGSSA
1985-05-1015:38 UTCm62611 60.22NAVD881OUSGSSA
1985-05-1015:38 UTCm7201924.63  1OUSGSSA
1987-05-1915:05 UTCm62610 58.60NGVD291OUSGSSA
1987-05-1915:05 UTCm62611 57.45NAVD881OUSGSSA
1987-05-1915:05 UTCm7201927.40  1OUSGSSA
1987-07-2817:17 UTCm62610 58.75NGVD291OUSGSSA
1987-07-2817:17 UTCm62611 57.60NAVD881OUSGSSA
1987-07-2817:17 UTCm7201927.25  1OUSGSSA
1990-04-2315:15 UTCm62610 60.85NGVD291OUSGSSA
1990-04-2315:15 UTCm62611 59.70NAVD881OUSGSSA
1990-04-2315:15 UTCm7201925.15  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.