USGS Home
Contact USGS
Search USGS

National Water Information System: Web Interface

USGS Water Resources   

Data Category:
Home Current Conditions Site Information Mapper Surface Water Groundwater Water Quality Water Use Revisions Geographic Area:
United States Alabama Alaska American Samoa Arizona Arkansas British Columbia California Canton and Enderbury Islands Colorado Connecticut Delaware Dist. of Columbia Florida Georgia Guam Hawaii Idaho Illinois Indiana Iowa Johnston Atoll Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Midway Islands Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Northern Mariana Islands Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island Ryukyu Islands, Southern South Carolina South Dakota Swan Islands Tennessee Texas Trust Territories, Pacific Is U.S.Misc Caribbean Islands U.S.Misc Pacific Islands Utah Vermont Virgin Islands Virginia Wake Island Washington West Virginia Wisconsin Wyoming

Page Loading - Please Wait...

DESCRIPTION:

Latitude 13°26'30.3",   Longitude -144°45'34.7"   NAD83
Guam, Guam   , Hydrologic Unit 22010000

Well depth: 120 feet
Hole depth: 120 feet
Land surface altitude: 140.42 feet above GUVD04.
Well completed in "Other aquifers" (N9999OTHER) national aquifer.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2007-10-02	2024-04-26
Daily Data
Groundwater level above local mean sea level (LMSL), feet	1978-10-01	2008-06-01	9696
Groundwater level above Guam Vertical Datum of 2004, feet	2008-06-03	2024-04-25	4834
Daily Statistics
Groundwater level above local mean sea level (LMSL), feet	1978-10-01	2008-06-01	9696
Groundwater level above Guam Vertical Datum of 2004, feet	2008-06-03	2023-11-24	4758
Monthly Statistics
Groundwater level above local mean sea level (LMSL), feet	1978-10	2008-06
Groundwater level above Guam Vertical Datum of 2004, feet	2008-06	2023-11
Annual Statistics
Groundwater level above local mean sea level (LMSL), feet	1979	2008
Groundwater level above Guam Vertical Datum of 2004, feet	2008	2024
Field groundwater-level measurements	1975-01-31	2024-01-25	280
Field/Lab water-quality samples	1988-02-17	1988-12-01	27
Water-Year Summary	2007	2022	16
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.


  

    

  

  

    


    


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