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Groundwater levels for the Nation

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Agency code = usgs
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  • 404412073384701
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USGS 404412073384701 N 3185. 2

Nassau County, New York
Latitude  40°44'16", Longitude  73°38'47" NAD27
Land-surface elevation 106.0 feet above NGVD29
The depth of the well is 468 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 Magothy Aquifer (211MAGT) local aquifer.
Output formats
Table of data
Tab-separated data
Graph of data
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
1957-03-01 D62610 67.30NGVD291OUSGSSA
1957-03-01 D62611 66.17NAVD881OUSGSSA
1957-03-01 D7201938.70  1OUSGSSA
1964-12-16 D62610 53.11NGVD291OUSGSSA
1964-12-16 D62611 51.98NAVD881OUSGSSA
1964-12-16 D7201952.89  1OUSGSSA
1974-04-1814:40 UTCm62610 -46.08NGVD291OUSGSSA
1974-04-1814:40 UTCm62611 -47.21NAVD881OUSGSSA
1974-04-1814:40 UTCm72019152.08  1OUSGSSA
1977-09-30 D62610 2.93NGVD294OUSGSSA
1977-09-30 D62611 1.80NAVD884OUSGSSA
1977-09-30 D72019103.07  4OUSGSSA

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
Status4Groundwater level affected by tide
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.