- DESCRIPTION:
-
Latitude 13°30'38.2", Longitude -144°49'26.9" NAD83
Guam, Guam , Hydrologic Unit 22010000 - Well depth: not determined.
Land surface altitude: 227.79 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) 2006-02-17 2024-11-22 Daily Data Groundwater level above local mean sea level (LMSL), feet 1982-09-30 2006-02-26 7581 Groundwater level above Guam Vertical Datum of 2004, feet 2006-02-18 2024-11-21 6041 Daily Statistics Groundwater level above local mean sea level (LMSL), feet 1982-09-30 2006-02-26 7581 Groundwater level above Guam Vertical Datum of 2004, feet 2006-02-18 2020-01-15 5021 Monthly Statistics Groundwater level above local mean sea level (LMSL), feet 1982-09 2006-02 Groundwater level above Guam Vertical Datum of 2004, feet 2006-02 2020-01 Annual Statistics Groundwater level above local mean sea level (LMSL), feet 1982 2006 Groundwater level above Guam Vertical Datum of 2004, feet 2006 2020 Field groundwater-level measurements 1973-11-30 2024-07-16 279 Water-Year Summary 2007 2020 14 Revisions Loading...
Additional Data Sources
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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.
