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Groundwater levels for the Nation

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Agency code = usgs
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  • 404636073271001
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USGS 404636073271001 N 11456. 1

Nassau County, New York
Latitude  40°46'36.2", Longitude  73°27'08.7" NAD83
Land-surface elevation 194.5 feet above NGVD29
The depth of the well is 840 feet below land surface.
The depth of the hole is 840 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
Tab-separated data
Graph of data
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
1990-04-1020:35 UTCm62610 76.35NGVD291OUSGSSA
1990-04-1020:35 UTCm62611 75.22NAVD881OUSGSSA
1990-04-1020:35 UTCm72019118.15  1OUSGSSA
1993-04-1615:27 UTCm62610 73.44NGVD291OUSGSSA
1993-04-1615:27 UTCm62611 72.31NAVD881OUSGSSA
1993-04-1615:27 UTCm72019121.06  1OUSGSSA
1994-04-0717:10 UTCm62610 75.60NGVD291OUSGSSA
1994-04-0717:10 UTCm62611 74.47NAVD881OUSGSSA
1994-04-0717:10 UTCm72019118.90  1OUSGSSA
1995-03-1418:45 UTCm62610 69.25NGVD291OUSGSSA
1995-03-1418:45 UTCm62611 68.12NAVD881OUSGSSA
1995-03-1418:45 UTCm72019125.25  1OUSGSSA
1996-05-1518:05 UTCm62610 67.52NGVD291OUSGSSA
1996-05-1518:05 UTCm62611 66.39NAVD881OUSGSSA
1996-05-1518:05 UTCm72019126.98  1OUSGSSA
1997-03-1015:20 UTCm62610 70.60NGVD291OUSGSSA
1997-03-1015:20 UTCm62611 69.47NAVD881OUSGSSA
1997-03-1015:20 UTCm72019123.90  1OUSGSSA
1998-03-2315:15 UTCm62610 73.58NGVD291SUSGSSA
1998-03-2315:15 UTCm62611 72.45NAVD881SUSGSSA
1998-03-2315:15 UTCm72019120.92  1SUSGSSA
2006-03-2213:08 UTCm62610 75.53NGVD291SUSGSSA
2006-03-2213:08 UTCm62611 74.40NAVD881SUSGSSA
2006-03-2213:08 UTCm72019118.97  1SUSGSSA
2007-03-2613:14 UTCm62610 76.13NGVD291SUSGSSA
2007-03-2613:14 UTCm62611 75.00NAVD881SUSGSSA
2007-03-2613:14 UTCm72019118.37  1SUSGSSA

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.
Method of measurementSSteel-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.