- DESCRIPTION:
-
Latitude 13°26'29.7", Longitude -144°47'24.1" NAD83
Guam, Guam , Hydrologic Unit 22010000 - Well depth: 390 feet
Hole depth: 400 feet
Land surface altitude: 153.49 feet above GUVD04.
Well completed in "Other aquifers" (N9999OTHER) national aquifer.
Well completed in "Limestone" (100LMSN) local aquifer
- AVAILABLE DATA:
Data Type Begin Date End Date Count Current / Historical Observations (availability statement) 2010-08-15 2024-11-24 Daily Data Groundwater level above local mean sea level (LMSL), feet 2010-08-15 2011-01-13 152 Daily Statistics Groundwater level above local mean sea level (LMSL), feet 2010-08-15 2011-01-13 152 Monthly Statistics Groundwater level above local mean sea level (LMSL), feet 2010-08 2011-01 Annual Statistics Groundwater level above local mean sea level (LMSL), feet 2010 2011 Field groundwater-level measurements 1981-03-17 2024-07-23 157 Field/Lab water-quality samples 1981-03-20 1996-01-31 222 Water-Year Summary 2010 2013 4 Revisions Loading...
Additional Data Sources
Begin Date
End Date
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- 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.
