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Groundwater levels for the Nation

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USGS 405151073381901 N 7614. 1

Nassau County, New York
Latitude  40°51'45", Longitude  73°38'15" NAD27
Land-surface elevation 32.0 feet above NGVD29
The depth of the well is 393 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.
Output formats
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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
1973-01-1318:30 UTCm62610 10.53NGVD291OUSGSSA
1973-01-1318:30 UTCm62611 9.45NAVD881OUSGSSA
1973-01-1318:30 UTCm7201921.47  1OUSGSSA
1977-01-2316:55 UTCm62610 11.30NGVD291OUSGSSA
1977-01-2316:55 UTCm62611 10.22NAVD881OUSGSSA
1977-01-2316:55 UTCm7201920.70  1OUSGSSA
1978-01-1513:26 UTCm62610 11.98NGVD291OUSGSSA
1978-01-1513:26 UTCm62611 10.90NAVD881OUSGSSA
1978-01-1513:26 UTCm7201920.02  1OUSGSSA
1981-01-2519:13 UTCm62610 13.60NGVD291OUSGSSA
1981-01-2519:13 UTCm62611 12.52NAVD881OUSGSSA
1981-01-2519:13 UTCm7201918.40  1OUSGSSA
1982-01-2519:13 UTCm62610 13.60NGVD294OUSGSSA
1982-01-2519:13 UTCm62611 12.52NAVD884OUSGSSA
1982-01-2519:13 UTCm7201918.40  4OUSGSSA
1983-01-0218:26 UTCm62610 13.35NGVD294OUSGSSA
1983-01-0218:26 UTCm62611 12.27NAVD884OUSGSSA
1983-01-0218:26 UTCm7201918.65  4OUSGSSA
1983-01-0218:28 UTCm62610 13.39NGVD294OUSGSSA
1983-01-0218:28 UTCm62611 12.31NAVD884OUSGSSA
1983-01-0218:28 UTCm7201918.61  4OUSGSSA
1983-12-2418:42 UTCm62610 13.52NGVD294OUSGSSA
1983-12-2418:42 UTCm62611 12.44NAVD884OUSGSSA
1983-12-2418:42 UTCm7201918.48  4OUSGSSA
1983-12-2418:45 UTCm62610 13.51NGVD294OUSGSSA
1983-12-2418:45 UTCm62611 12.43NAVD884OUSGSSA
1983-12-2418:45 UTCm7201918.49  4OUSGSSA
1984-12-3112:09 UTCm62610 15.40NGVD294OUSGSSA
1984-12-3112:09 UTCm62611 14.32NAVD884OUSGSSA
1984-12-3112:09 UTCm7201916.60  4OUSGSSA
1987-01-0218:10 UTCm62610 16.24NGVD294OUSGSSA
1987-01-0218:10 UTCm62611 15.16NAVD884OUSGSSA
1987-01-0218:10 UTCm7201915.76  4OUSGSSA
1990-04-1117:45 UTCm62610 8.98NGVD294OUSGSSA
1990-04-1117:45 UTCm62611 7.90NAVD884OUSGSSA
1990-04-1117:45 UTCm7201923.02  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.