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Groundwater levels for the Nation

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USGS 404125073325006 N 9473. 1

Nassau County, New York
Latitude  40°41'25", Longitude  73°32'50" NAD27
Land-surface elevation 42.0 feet above NGVD29
The depth of the well is 42 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 Glacial Aquifer, Upper (112GLCLU) 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
1990-03-26 D62610 31.41NGVD291OUSGSSA
1990-03-26 D62611 30.24NAVD881OUSGSSA
1990-03-26 D7201910.59  1OUSGSSA
1990-06-20 D62610 32.31NGVD291OUSGSSA
1990-06-20 D62611 31.14NAVD881OUSGSSA
1990-06-20 D720199.69  1OUSGSSA
1990-08-17 D62610 30.44NGVD291OUSGSSA
1990-08-17 D62611 29.27NAVD881OUSGSSA
1990-08-17 D7201911.56  1OUSGSSA
1990-10-30 D62610 32.10NGVD291OUSGSSA
1990-10-30 D62611 30.93NAVD881OUSGSSA
1990-10-30 D720199.90  1OUSGSSA
1991-03-2116:00 UTCm62610 31.88NGVD291OUSGSSA
1991-03-2116:00 UTCm62611 30.71NAVD881OUSGSSA
1991-03-2116:00 UTCm7201910.12  1OUSGSSA
1991-06-2417:50 UTCm62610 30.27NGVD291OUSGSSA
1991-06-2417:50 UTCm62611 29.10NAVD881OUSGSSA
1991-06-2417:50 UTCm7201911.73  1OUSGSSA
1991-10-2117:30 UTCm62610 28.99NGVD291OUSGSSA
1991-10-2117:30 UTCm62611 27.82NAVD881OUSGSSA
1991-10-2117:30 UTCm7201913.01  1OUSGSSA
1992-03-2619:01 UTCm62610 29.40NGVD291OUSGSSA
1992-03-2619:01 UTCm62611 28.23NAVD881OUSGSSA
1992-03-2619:01 UTCm7201912.60  1OUSGSSA
1992-06-2918:20 UTCm62610 28.31NGVD291OUSGSSA
1992-06-2918:20 UTCm62611 27.14NAVD881OUSGSSA
1992-06-2918:20 UTCm7201913.69  1OUSGSSA
1993-03-2520:00 UTCm62610 31.04NGVD291OUSGSSA
1993-03-2520:00 UTCm62611 29.87NAVD881OUSGSSA
1993-03-2520:00 UTCm7201910.96  1OUSGSSA
1994-03-3016:55 UTCm62610 29.79NGVD291OUSGSSA
1994-03-3016:55 UTCm62611 28.62NAVD881OUSGSSA
1994-03-3016:55 UTCm7201912.21  1OUSGSSA
1995-03-1315:03 UTCm62610 27.83NGVD291OUSGSSA
1995-03-1315:03 UTCm62611 26.66NAVD881OUSGSSA
1995-03-1315:03 UTCm7201914.17  1OUSGSSA
1996-03-1315:40 UTCm62610 28.50NGVD291OUSGSSA
1996-03-1315:40 UTCm62611 27.33NAVD881OUSGSSA
1996-03-1315:40 UTCm7201913.50  1OUSGSSA
1997-03-1115:17 UTCm62610 30.56NGVD291OUSGSSA
1997-03-1115:17 UTCm62611 29.39NAVD881OUSGSSA
1997-03-1115:17 UTCm7201911.44  1OUSGSSA
1998-03-2415:22 UTCm62610 31.66NGVD291SUSGSSA
1998-03-2415:22 UTCm62611 30.49NAVD881SUSGSSA
1998-03-2415:22 UTCm7201910.34  1SUSGSSA

Explanation
SectionCodeDescription
Water-level date-time accuracyDDate is accurate to the Day
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.