The Kiikii exploratory well (State well number 3-3407-37) was drilled about 1.4 miles southwest of the town of Haleiwa and 4,000 feet west- southwest of Weed Circle. The well is on agricultural land in the Waialua ground-water area. The well penetrates through sedimentary deposits (caprock) and into the underlying basalt aquifer. Well-construction data, logs of drilling notes, and geologic descriptions for the samples are presented for the well. The well is one of 12 exploratory wells drilled in the north-central Oahu area between July, 1993 and May, 1994 in cooperation with the Honolulu Board of Water Supply.