USGS Water-Year Summary 2024
205437156310501 6-5431-01, TH-B Waiehu, Maui, HI
Hawaii volcanic-rock aquifers
Wailuku Volcanic Series, Lava Flows
LOCATION - Lat 20°54'24.8", long 156°30'55.0" referenced to North American Datum of 1983, Maui County, HI, Hydrologic Unit 20020000, 0.5 mi southwest of Waiehu Village, and 1.4 mi southwest of intersection of Malaihi Road and Kahekili Highway.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 560 ft. Upper casing diameter 1.5 in; top of first opening 500 ft, bottom of last opening 560 ft.
DATUM - Land-surface datum is 492.1 ft above undefined vertical datum. Measuring point: Top of 1.5 inch PVC casing, 492.51 ft above Local Mean Sea Level, Sep. 6, 1975 to Oct. 1, 2003; Top of 1.5 inch PVC casing, 492.09 ft above Local Mean Sea Level, Oct. 1, 2003 to Mar. 31, 2004; Top of 1.5 inch PVC casing, 492.15 ft above Local Mean Sea Level, Mar. 31, 2004 to present. Undefined vertical datum is local mean sea level. Land-surface datum updated on July 18, 2023 from 493.67 feet. Updated Land-surface datum is from survey done on December 8, 2022.
PERIOD OF RECORD - Occasional measurements, September 1974 to July 1982. Water-level recorder, August 1982 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 19.52 ft. above mean sea level, January 2, 1983; lowest water level measured, 6.22 ft. above mean sea level, July 2, 2013.