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Groundwater levels for the Nation

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Agency code = usgs
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  • 405430073352301
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USGS 405430073352301 N 12921. 1

Nassau County, New York
Latitude  40°54'30", Longitude  73°35'23" NAD27
Land-surface elevation 11 feet above NAVD88
The depth of the well is 351.0 feet below land surface.
The depth of the hole is 351 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.
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Table of 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
2013-07-3015:45 UTCm62610 0.52NGVD291TUSGSSA
2013-07-3015:45 UTCm62611 -0.56NAVD881TUSGSSA
2013-07-3015:45 UTCm7201911.56  1TUSGSSA
2013-07-3021:01 UTCm62610 2.19NGVD291TUSGSSA
2013-07-3021:01 UTCm62611 1.11NAVD881TUSGSSA
2013-07-3021:01 UTCm720199.89  1TUSGSSA
2013-07-3022:00 UTCm62610 2.68NGVD294TUSGSSA
2013-07-3022:00 UTCm62611 1.60NAVD884TUSGSSA
2013-07-3022:00 UTCm720199.40  4TUSGSSA
2013-09-0518:47 UTCm62610 4.07NGVD291SUSGSSA
2013-09-0518:47 UTCm62611 2.99NAVD881SUSGSSA
2013-09-0518:47 UTCm720198.01  1SUSGSSA
2013-09-0613:09 UTCm62610 2.82NGVD291SUSGSSA
2013-09-0613:09 UTCm62611 1.74NAVD881SUSGSSA
2013-09-0613:09 UTCm720199.26  1SUSGSSA
2013-09-0613:15 UTCm62610 2.89NGVD291SUSGSSA
2013-09-0613:15 UTCm62611 1.81NAVD881SUSGSSA
2013-09-0613:15 UTCm720199.19  1SUSGSSA
2013-10-2318:15 UTCm62610 10.07NGVD291TUSGSSA
2013-10-2318:15 UTCm62611 8.99NAVD881TUSGSSA
2013-10-2318:15 UTCm720192.01  1TUSGSSA
2013-10-2419:36 UTCm62610 9.64NGVD291TUSGSSA
2013-10-2419:36 UTCm62611 8.56NAVD881TUSGSSA
2013-10-2419:36 UTCm720192.44  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 measurementSSteel-tape measurement.
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.