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Groundwater levels for the Nation

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Agency code = usgs
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  • 404123073291601
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USGS 404123073291601 N 11643. 1

Nassau County, New York
Latitude  40°41'23", Longitude  73°29'16" NAD27
Land-surface elevation 41.5 feet above NGVD29
The depth of the well is 705 feet below land surface.
The depth of the hole is 720 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
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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
1993-04-1614:50 UTCm62610 23.71NGVD291OUSGSSA
1993-04-1614:50 UTCm62611 22.52NAVD881OUSGSSA
1993-04-1614:50 UTCm7201917.79  1OUSGSSA
1994-04-0720:48 UTCm62610 25.24NGVD291OUSGSSA
1994-04-0720:48 UTCm62611 24.05NAVD881OUSGSSA
1994-04-0720:48 UTCm7201916.26  1OUSGSSA
1997-03-1217:13 UTCm62610 22.71NGVD291OUSGSSA
1997-03-1217:13 UTCm62611 21.52NAVD881OUSGSSA
1997-03-1217:13 UTCm7201918.79  1OUSGSSA

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
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.