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Groundwater levels for the Nation

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  • 405325073293302
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USGS 405325073293302 N 1486. 2

Nassau County, New York
Latitude  40°53'25", Longitude  73°29'33" NAD27
Land-surface elevation 8.0 feet above NGVD29
The depth of the well is 500 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
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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
1986-01-2415:00 UTCm62610 14.79NGVD294OUSGSSA
1986-01-2415:00 UTCm62611 13.72NAVD884OUSGSSA
1986-01-2415:00 UTCm72019-6.79  4OUSGSSA
1987-01-1416:30 UTCm62610 15.05NGVD294OUSGSSA
1987-01-1416:30 UTCm62611 13.98NAVD884OUSGSSA
1987-01-1416:30 UTCm72019-7.05  4OUSGSSA
1988-03-0216:15 UTCm62610 13.67NGVD294OUSGSSA
1988-03-0216:15 UTCm62611 12.60NAVD884OUSGSSA
1988-03-0216:15 UTCm72019-5.67  4OUSGSSA
1988-12-2316:45 UTCm62610 13.41NGVD294OUSGSSA
1988-12-2316:45 UTCm62611 12.34NAVD884OUSGSSA
1988-12-2316:45 UTCm72019-5.41  4OUSGSSA
1990-04-1317:30 UTCm62610 13.02NGVD294OUSGSSA
1990-04-1317:30 UTCm62611 11.95NAVD884OUSGSSA
1990-04-1317:30 UTCm72019-5.02  4OUSGSSA

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
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.