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Groundwater levels for the Nation

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Agency code = usgs
site_no list =
  • 404400073283201
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USGS 404400073283201 N 6915. 1

Nassau County, New York
Latitude  40°44'01", Longitude  73°28'31" NAD27
Land-surface elevation 95.0 feet above NGVD29
The depth of the well is 516 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
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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
1964-12-10 D62610 60.20NGVD291OUSGSSA
1964-12-10 D62611 58.99NAVD881OUSGSSA
1964-12-10 D7201934.80  1OUSGSSA
1969-11-17 D62610 54.90NGVD291OUSGSSA
1969-11-17 D62611 53.69NAVD881OUSGSSA
1969-11-17 D7201940.10  1OUSGSSA
1970-03-05 D62610 56.70NGVD291OUSGSSA
1970-03-05 D62611 55.49NAVD881OUSGSSA
1970-03-05 D7201938.30  1OUSGSSA
1986-04-17 D62610 54.41NGVD291OUSGSSA
1986-04-17 D62611 53.20NAVD881OUSGSSA
1986-04-17 D7201940.59  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 measurementOObserved.
Measuring agencyUSGSU.S. Geological Survey
Source of measurementSMeasured by personnel of reporting agency.
Water-level approval statusAApproved for publication -- Processing and review completed.