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Groundwater levels for the Nation

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Agency code = usgs
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  • 412111072063601
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USGS 412111072063601 CT-NL 4

New London County, Connecticut
Latitude  41°21'11", Longitude  72°06'36" NAD27
Land-surface elevation 52.00 feet above NGVD29
The depth of the well is 200 feet below land surface.
This well is completed in the New York and New England crystalline-rock aquifers (N600NECRSN) national aquifer.
This well is completed in the Non-Carbonate Crystalline Bedrock (300NCBC) local aquifer.
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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
1937-07-14 D62610 44.00NGVD291OUSGSSA
1937-07-14 D62611 43.03NAVD881OUSGSSA
1937-07-14 D720198.00  1OUSGSSA

Explanation
SectionCodeDescription
Water-level date-time accuracyDDate is accurate to the Day
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.
Measuring agencyUSGSU.S. Geological Survey
Source of measurementSMeasured by personnel of reporting agency.
Water-level approval statusAApproved for publication -- Processing and review completed.