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USGS 133628144513271 EX-8 Northwest Field, Guam

  Well Site

DESCRIPTION:
Latitude 13°36'34.02",   Longitude -144°51'40.16"   NAD83
Guam, Guam   , Hydrologic Unit 22010000
Well depth: 658 feet
Hole depth: 658 feet
Land surface altitude: 462.34 feet above LMSL.
Well completed in "Other aquifers" (N9999OTHER) national aquifer.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2010-11-30  2024-03-04  
 Daily Data
    Groundwater level above local mean sea level (LMSL), feet  2010-11-30  2011-01-13  45 
    Groundwater level above Guam Vertical Datum of 2004, feet  2012-01-13  2024-03-03  3631 
 Daily Statistics 
    Groundwater level above local mean sea level (LMSL), feet  2010-11-30  2011-01-13 45 
    Groundwater level above Guam Vertical Datum of 2004, feet  2012-01-13  2020-01-15 2870 
 Monthly Statistics 
    Groundwater level above local mean sea level (LMSL), feet  2010-11  2011-01  
    Groundwater level above Guam Vertical Datum of 2004, feet  2012-01  2020-01  
 Annual Statistics 
    Groundwater level above local mean sea level (LMSL), feet  2011  2011  
    Groundwater level above Guam Vertical Datum of 2004, feet  2012  2020  
 Field groundwater-level measurements 1981-09-14  2024-01-27  146 
 Field/Lab water-quality samples 1982-03-03  1985-10-29  41 
 Water-Year Summary 2012  2020  9 
 Revisions  Loading...

Additional Data Sources

Begin Date

End Date

Count
OPERATION:
Record for this site is maintained by the USGS Pacific Islands Water Science Center
Email questions about this site to Pacific Islands Water Science Center Water-Data Inquiries
ADDITIONAL INFORMATION
For this site, "Field groundwater-level measurements"
displayed in "Table of data" or "Tab-separated
data" formats indicate water levels above two different vertical
datums for each measurement date and time, although only one of the
datums currently is appropriate and accurate for the measurement. In
general, the appropriate vertical datum is date dependent. The
appropriate datum for water levels measured before about 2005 to 2010
is LMSL (local mean sea level), whereas the appropriate datum for water
levels measured after about 2005 to 2010 is the most current vertical
datum available (GUVD04 for Guam; NMVD03 for Saipan). The dates that
are appropriate for each datum are site specific and have yet to be
determined for this site. Also, the vertical datum indicated in the
graphical output of "Field groundwater-level measurements"
may reflect an incorrect datum, depending on the range of dates being
displayed.

weri Station operated in cooperation with the Water and Environmental Research Institute, University of Guam.