Exploratory drilling and aquifer testing at the Kipahulu District Haleakala National Park, Maui, Hawaii
Souza WR. 1983. Exploratory drilling and aquifer testing at the Kipahulu District Haleakala National Park, Maui, Hawaii. U.S. Geological Survey (USGS) Water Resources Investigations Report. 83-4066. Honollulu, HI
An exploratory well, located at 388 feet above sea level in Kipahulu Valley on Maui, Hawaii, was completed and tested in October 1980. The 410-foot well penetrates a series of very dense basaltic lava flows of the Hana Group of Quaternary age. At an elevation of 10 feet above mean sea level, the well penetrated a water-bearing zone of permeable basaltic rock. Water from this zone had a head of about 76 feet above sea level. In October of 1980, the well was pump tested for nine hours at various discharge rates up to 350 gallons per minute with a maximum drawdown of about 12 feet. Based on the test data, the well should produce water at a rate of 200 gallons per minute with a drawdown of less than three feet. The water level in the well was continuously monitored from October 1980 to mid-November 1981, during which period a maximum decline of 20 feet was recorded. Water-level fluctuations in the well can be correlated to the flow in nearby Palikea Stream. The long-term water level in the well should stabilize at about 75 feet above sea level. Water quality was excellent. The concentration of dissolved-solids was 49 milligrams per liter and the concentration of chloride was 4.2 milligrams per liter.
- Type
- Published Report
- Authors
- Souza, W
- Date of Issue
- 1983
- Units
- HALE , HAVO , HIST
- Keywords
- Drill Hole, East Maui Volcano, ehistory, Geology, Haleakala Volcano, History, Hydrology