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Groundwater levels for the Nation

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Agency code = usgs
site_no list =
  • 381831122152401
Minimum number of levels = 1
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USGS 381831122152401 005N004W01L002M

Napa County, California
Latitude  38°18'31.05", Longitude 122°15'23.94" NAD83
Land-surface elevation 135.85 feet above NGVD29
The depth of the well is 150 feet below land surface.
The depth of the hole is 150 feet below land surface.
This well is completed in the California Coastal Basin aquifers (N100CACSTL) national 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
2001-05-23 D62610 39.65NGVD291VCA087AA
2001-05-23 D62611 42.27NAVD881VCA087AA
2001-05-23 D7201996.20  1VCA087AA
2001-08-16 D62610 36.25NGVD291VUSGSSA
2001-08-16 D62611 38.87NAVD881VUSGSSA
2001-08-16 D7201999.60  1VUSGSSA
2001-10-23 D62610 33.05NGVD291VCA087AA
2001-10-23 D62611 35.67NAVD881VCA087AA
2001-10-23 D72019102.80  1VCA087AA
2002-04-19 D62610 39.65NGVD291VCA087AA
2002-04-19 D62611 42.27NAVD881VCA087AA
2002-04-19 D7201996.20  1VCA087AA
2002-10-22 D62610 27.45NGVD291VCA087AA
2002-10-22 D62611 30.07NAVD881VCA087AA
2002-10-22 D72019108.40  1VCA087AA

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 measurementVCalibrated electric-tape measurement.
Measuring agencyCA087Napa County Flood Control & Water Conservation District, CA
Measuring agencyUSGSU.S. Geological Survey
Source of measurementAReported by another government agency (do not use "A" if reported by owner, use "O").
Source of measurementSMeasured by personnel of reporting agency.
Water-level approval statusAApproved for publication -- Processing and review completed.