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Groundwater levels for the Nation

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Agency code = usgs
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  • 404636073280701
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USGS 404636073280701 N 4095. 1

Nassau County, New York
Latitude  40°46'39", Longitude  73°28'09" NAD27
Land-surface elevation 150.0 feet above NGVD29
The depth of the well is 495 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
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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
1959-02-12 D62610 83.49NGVD291OUSGSSA
1959-02-12 D62611 82.35NAVD881OUSGSSA
1959-02-12 D7201966.51  1OUSGSSA
1961-02-20 D62610 79.73NGVD291OUSGSSA
1961-02-20 D62611 78.59NAVD881OUSGSSA
1961-02-20 D7201970.27  1OUSGSSA
1964-12-11 D62610 87.40NGVD291OUSGSSA
1964-12-11 D62611 86.26NAVD881OUSGSSA
1964-12-11 D7201962.60  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.