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Groundwater levels for the Nation

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Agency code = usgs
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  • 405102073321101
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USGS 405102073321101 N 12855. 1

Nassau County, New York
Latitude  40°51'02", Longitude  73°32'11" NAD27
Land-surface elevation 177 feet above NAVD88
The depth of the well is 910.0 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 Lloyd Aquifer (211LLYD) 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
1997-09-1614:40 UTCm62610 51.27NGVD294TUSGSSA
1997-09-1614:40 UTCm62611 50.21NAVD884TUSGSSA
1997-09-1614:40 UTCm72019126.79  4TUSGSSA
2013-07-1711:50 UTCm62610 53.82NGVD291TUSGSSA
2013-07-1711:50 UTCm62611 52.76NAVD881TUSGSSA
2013-07-1711:50 UTCm72019124.24  1TUSGSSA
2013-07-3018:30 UTCm62610 53.74NGVD291TUSGSSA
2013-07-3018:30 UTCm62611 52.68NAVD881TUSGSSA
2013-07-3018:30 UTCm72019124.32  1TUSGSSA
2016-05-2419:27 UTCm62610 51.93NGVD291TUSGSSA
2016-05-2419:27 UTCm62611 50.87NAVD881TUSGSSA
2016-05-2419:27 UTCm72019126.13  1TUSGSSA

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 measurementTElectric-tape measurement.
Measuring agencyUSGSU.S. Geological Survey
Source of measurementSMeasured by personnel of reporting agency.
Water-level approval statusAApproved for publication -- Processing and review completed.