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Groundwater levels for the Nation

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Agency code = usgs
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  • 404810073414901
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USGS 404810073414901 N 9901. 1

Nassau County, New York
Latitude  40°48'10", Longitude  73°41'49" NAD27
Land-surface elevation 55.0 feet above NGVD29
This well is completed in the Northern Atlantic Coastal Plain aquifer system (S100NATLCP) national aquifer.
This well is completed in the Glacial Aquifer, Upper (112GLCLU) 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
1991-11-0717:40 UTCm62610 27.87NGVD291OUSGSSA
1991-11-0717:40 UTCm62611 26.78NAVD881OUSGSSA
1991-11-0717:40 UTCm7201927.13  1OUSGSSA
1992-03-1715:35 UTCm62610 29.26NGVD294OUSGSSA
1992-03-1715:35 UTCm62611 28.17NAVD884OUSGSSA
1992-03-1715:35 UTCm7201925.74  4OUSGSSA
1992-05-2019:44 UTCm62610 28.39NGVD294OUSGSSA
1992-05-2019:44 UTCm62611 27.30NAVD884OUSGSSA
1992-05-2019:44 UTCm7201926.61  4OUSGSSA
1992-12-0816:31 UTCm62610 28.07NGVD291OUSGSSA
1992-12-0816:31 UTCm62611 26.98NAVD881OUSGSSA
1992-12-0816:31 UTCm7201926.93  1OUSGSSA
1993-03-2519:19 UTCm62610 29.45NGVD291OUSGSSA
1993-03-2519:19 UTCm62611 28.36NAVD881OUSGSSA
1993-03-2519:19 UTCm7201925.55  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
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.