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Groundwater levels for the Nation

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  • 403530073340301
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USGS 403530073340301 N 2597. 1

Nassau County, New York
Latitude  40°35'32", Longitude  73°40'34" NAD27
Land-surface elevation 7.8 feet above NGVD29
The depth of the well is 1,241 feet below land surface.
The depth of the hole is 1,253 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
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
1971-01-07 D62610 -1.98NGVD29 OUSGSSA
1971-01-07 D62611 -3.09NAVD88 OUSGSSA
1971-01-07 D720199.78   OUSGSSA
1974-01-31 D62610 3.02NGVD291OUSGSSA
1974-01-31 D62611 1.91NAVD881OUSGSSA
1974-01-31 D720194.78  1OUSGSSA
1975-01-21 D62610 2.18NGVD291OUSGSSA
1975-01-21 D62611 1.07NAVD881OUSGSSA
1975-01-21 D720195.62  1OUSGSSA
1976-01-2305:30 UTCm62610 0.64NGVD291OUSGSSA
1976-01-2305:30 UTCm62611 -0.47NAVD881OUSGSSA
1976-01-2305:30 UTCm720197.16  1OUSGSSA
1978-02-0218:30 UTCm62610 1.89NGVD291OUSGSSA
1978-02-0218:30 UTCm62611 0.78NAVD881OUSGSSA
1978-02-0218:30 UTCm720195.91  1OUSGSSA
1979-01-1905:35 UTCm62610 -6.44NGVD291OUSGSSA
1979-01-1905:35 UTCm62611 -7.55NAVD881OUSGSSA
1979-01-1905:35 UTCm7201914.24  1OUSGSSA
1980-01-2305:45 UTCm62610 4.11NGVD291OUSGSSA
1980-01-2305:45 UTCm62611 3.00NAVD881OUSGSSA
1980-01-2305:45 UTCm720193.69  1OUSGSSA
1981-01-1317:15 UTCm62610 2.06NGVD291OUSGSSA
1981-01-1317:15 UTCm62611 0.95NAVD881OUSGSSA
1981-01-1317:15 UTCm720195.74  1OUSGSSA
1982-01-1505:52 UTCm62610 -0.56NGVD291SUSGSSA
1982-01-1505:52 UTCm62611 -1.67NAVD881SUSGSSA
1982-01-1505:52 UTCm720198.36  1SUSGSSA
1982-01-1505:57 UTCm62610 -0.04NGVD291SUSGSSA
1982-01-1505:57 UTCm62611 -1.15NAVD881SUSGSSA
1982-01-1505:57 UTCm720197.84  1SUSGSSA
1984-01-1005:00 UTCm62610 1.99NGVD294OUSGSSA
1984-01-1005:00 UTCm62611 0.88NAVD884OUSGSSA
1984-01-1005:00 UTCm720195.81  4OUSGSSA
1984-01-1005:04 UTCm62610 1.99NGVD294OUSGSSA
1984-01-1005:04 UTCm62611 0.88NAVD884OUSGSSA
1984-01-1005:04 UTCm720195.81  4OUSGSSA
1985-01-1506:10 UTCm62610 1.93NGVD294OUSGSSA
1985-01-1506:10 UTCm62611 0.82NAVD884OUSGSSA
1985-01-1506:10 UTCm720195.87  4OUSGSSA
1986-02-0318:10 UTCm62610 0.39NGVD294OUSGSSA
1986-02-0318:10 UTCm62611 -0.72NAVD884OUSGSSA
1986-02-0318:10 UTCm720197.41  4OUSGSSA
1988-12-1517:05 UTCm62610 2.83NGVD291SUSGSSA
1988-12-1517:05 UTCm62611 1.72NAVD881SUSGSSA
1988-12-1517:05 UTCm720194.97  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
StatusThe reported water-level measurement represents a static level
Status1Static
Status4GWTideAffected
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.