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Groundwater levels for the Nation

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Agency code = usgs
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  • 404911073411101
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USGS 404911073411101 N 1716. 2

Nassau County, New York
Latitude  40°49'11", Longitude  73°41'11" NAD27
Land-surface elevation 101.0 feet above NGVD29
The depth of the well is 483 feet below land surface.
The depth of the hole is 513 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
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
1946-01-21 D62610 5.60NGVD291AUSGSSA
1946-01-21 D62611 4.51NAVD881AUSGSSA
1946-01-21 D7201995.40  1AUSGSSA
1947-03-28 D62610 10.70NGVD291AUSGSSA
1947-03-28 D62611 9.61NAVD881AUSGSSA
1947-03-28 D7201990.30  1AUSGSSA
1948-04-21 D62610 12.50NGVD291AUSGSSA
1948-04-21 D62611 11.41NAVD881AUSGSSA
1948-04-21 D7201988.50  1AUSGSSA
1949-04-07 D62610 10.20NGVD291AUSGSSA
1949-04-07 D62611 9.11NAVD881AUSGSSA
1949-04-07 D7201990.80  1AUSGSSA
1950-02-13 D62610 0.90NGVD291AUSGSSA
1950-02-13 D62611 -0.19NAVD881AUSGSSA
1950-02-13 D72019100.10  1AUSGSSA
1952-04-09 D62610 2.85NGVD291AUSGSSA
1952-04-09 D62611 1.76NAVD881AUSGSSA
1952-04-09 D7201998.15  1AUSGSSA
1955-11-08 D62610 3.85NGVD291AUSGSSA
1955-11-08 D62611 2.76NAVD881AUSGSSA
1955-11-08 D7201997.15  1AUSGSSA
1956-04-04 D62610 3.58NGVD291OUSGSSA
1956-04-04 D62611 2.49NAVD881OUSGSSA
1956-04-04 D7201997.42  1OUSGSSA
1956-06-06 D62610 3.94NGVD291OUSGSSA
1956-06-06 D62611 2.85NAVD881OUSGSSA
1956-06-06 D7201997.06  1OUSGSSA
1956-08-02 D62610 -1.47NGVD291OUSGSSA
1956-08-02 D62611 -2.56NAVD881OUSGSSA
1956-08-02 D72019102.47  1OUSGSSA
1956-10-03 D62610 0.22NGVD291OUSGSSA
1956-10-03 D62611 -0.87NAVD881OUSGSSA
1956-10-03 D72019100.78  1OUSGSSA
1956-11-02 D62610 8.80NGVD291OUSGSSA
1956-11-02 D62611 7.71NAVD881OUSGSSA
1956-11-02 D7201992.20  1OUSGSSA
1956-11-26 D62610 11.65NGVD291OUSGSSA
1956-11-26 D62611 10.56NAVD881OUSGSSA
1956-11-26 D7201989.35  1OUSGSSA
1957-01-08 D62610 3.20NGVD291OUSGSSA
1957-01-08 D62611 2.11NAVD881OUSGSSA
1957-01-08 D7201997.80  1OUSGSSA
1957-04-30 D62610 0.05NGVD291OUSGSSA
1957-04-30 D62611 -1.04NAVD881OUSGSSA
1957-04-30 D72019100.95  1OUSGSSA
1957-08-16 D62610 3.37NGVD291OUSGSSA
1957-08-16 D62611 2.28NAVD881OUSGSSA
1957-08-16 D7201997.63  1OUSGSSA
1958-01-30 D62610 15.08NGVD291OUSGSSA
1958-01-30 D62611 13.99NAVD881OUSGSSA
1958-01-30 D7201985.92  1OUSGSSA
1958-02-20 D62610 13.82NGVD291OUSGSSA
1958-02-20 D62611 12.73NAVD881OUSGSSA
1958-02-20 D7201987.18  1OUSGSSA
1959-04-08 D62610 2.69NGVD291OUSGSSA
1959-04-08 D62611 1.60NAVD881OUSGSSA
1959-04-08 D7201998.31  1OUSGSSA
1961-03-13 D62610 7.58NGVD291OUSGSSA
1961-03-13 D62611 6.49NAVD881OUSGSSA
1961-03-13 D7201993.42  1OUSGSSA
1964-03-14 D62610 5.12NGVD291OUSGSSA
1964-03-14 D62611 4.03NAVD881OUSGSSA
1964-03-14 D7201995.88  1OUSGSSA

Explanation
SectionCodeDescription
Water-level date-time accuracyDDate is accurate to the Day
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 measurementAAirline measurement.
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.