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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.
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USGS Water-Year Summary 2025
215607159344301 2-5634-01, Hanapepe Ridge, Kauai, HI
Hawaii volcanic-rock aquifers
Koloa Volcanic Series, Lava Flows
Koloa Volcanic Series, Lava Flows
LOCATION - Lat 21°55'55.0", long 159°34'33.0" referenced to North American Datum of 1983, Kauai County, HI, Hydrologic Unit 20070000, 2.7 miles north of Weli Point, and 3.3 miles northeast of Puolo Point.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 508 ft. Upper casing diameter 8 in; top of first opening 469 ft, bottom of last opening 508 ft.
DATUM - Land-surface datum is 440.41 ft above undefined vertical datum. Measuring point: unknown, 440.62 ft above Local Mean Sea Level, Apr. 29, 1961 to Feb. 20, 1997; top of recorder shelf (floor of shelter over casing), 440.68 ft above Local Mean Sea Level, Feb. 20, 1997 to Mar. 22, 2017; top of recorder shelf (floor of shelter over casing), 441.55 ft above Local Mean Sea Level, Mar. 21, 2017 to Mar. 13, 2018; Top of steel casing, north side of casing, 441.49 ft above Local Mean Sea Level, Mar. 13, 2018 to present; Top of aluminum bracket between filed notches aligned with old painted MP mark, 441.496 ft above Local Mean Sea Level, Sep. 19, 2023 to present.
PERIOD OF RECORD - Water-level recorder, December 1989 to January 2012. Water level measurements, January 1986 to current year.
PERIOD OF DAILY RECORD - February 1986 to January 2012.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 17.83 feet above mean sea level, January 15, 16, 1992; lowest water level measured, 14.78 feet above mean sea level, October 18, 2015 and January 18, 2017.
