Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

* We've detected you're using a mobile device. Find our Next Generation Station Page here.
Click to hideNews Bulletins

Water-Year Summary for Site 132617144423366

Click to hide Water-Year Summary instructions and information
  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00045 Precipitation(Sum)  

Water year 2023: 2023-10-01 to 2024-09-30

Print this page
USGS Water-Year Summary 2023
132617144423366 Mount Chachao Rain Gage near Piti, Guam
LOCATION - Lat 13°26'22.1", long -144°24'3.8" referenced to North American Datum of 1983, Guam County, GM, Hydrologic Unit 22010000, approximately two miles south of route 6 (Spruance Road) on the Mt. Alutom access road.
REVISIONS HISTORY - Precipitation data revised from May 4 (2000) to May 30 (1300), 2021 on January 10, 2022.
PERIOD OF RECORD - February 1973 to current year. Prior to October 1988, and October 1990 to September 2005, unpublished records are in the files of the U.S. Geological Survey.
INSTRUMENTATION - Standard 8-in National Weather Service (NWS) rain collector with tipping-bucket-counter system attached to an electronic datalogger.  Float type gage prior to August 22, 2006.
REMARKS - Rainfall recorded in hundredths of an inch. Rainfall records recorded in tenths of an inch prior to August 22, 2006.