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- 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.
USGS Water-Year Summary 2024
213133158014201 Upper Helemano Reservoir near Wahiawa, Oahu, HI
LOCATION - Lat 21°31'33.3", long 158°01'42.3" referenced to North American Datum of 1983, Honolulu County, HI, Hydrologic Unit 20060000, 2.5 mi, North west of Wahiawa post office, 4.0 mi, North of Wheeler Army Airfield, and 7.0 mi, South of Waialua post office.
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 2011 to current year.
GAGE - Water stage recorder. Elevation of gage is 960 ft above mean sea level, from Google Earth.
EXTREMES FOR PERIOD OF RECORD - Maximum gage-height, 46.35 ft, January 6, 2013; minimum recorded gage-height, 24.49 ft. March 5, 2015, but may have been lower during periods prior to lowering of the stage sensor on September 25, 2013.
