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Water-Year Summary for Site 16206600

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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.
Available Parameters
00065 Gage height(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023
16206600 Koolau Reservoir near Wahiawa, Oahu, HI
LOCATION - Lat 21°29'31.4", long 157°58'12.7" referenced to North American Datum of 1983, Honolulu County, HI, Hydrologic Unit 20060000,
PERIOD OF RECORD - December 2022 to current year.
GAGE - Water stage recorder. Elevation of gage is 1,032 ft above mean sea level, from DEM.
EXTREMES FOR PERIOD OF RECORD - Maximum gage-height, 5.90 ft, on many days; minimum recorded gage-height, 5.86 ft. on many days.