Hawai‘i Play Fairway Project

The U.S. Department of Energy-funded Hawaii Play Fairway project has provided the first updated geothermal resource assessment for the State of Hawaii since 1985. In Phase 1, the project identified, compiled, and ranked existing datasets related to geothermal resources, developed a statistical methodology to evaluate subsurface resource probability, and identified a roadmap for future exploration activities. In Phase 2, the project collected new groundwater data from the ten locations; geophysical data on the islands of Lanai, Maui, and central Hawaii; and modeled the effect of topographically induced stress to further characterize subsurface permeability.

Humu‘ula Groundwater Research Project

The U.S. Army-funded Humuʻula Groundwater Research Project (HGRP) drilled two test holes in Hawaiʻi Island’s ‘Saddle’ region between Mauna Loa and Mauna Kea volcanoes to investigate groundwater resources. Results included the discovery of: i) groundwater at a much shallower depth than expected, ii) a dike-impounded aquifer, and iii) a potential geothermal reservoir. HGRP collected a continuous sequence of rock core, making a complete stratigraphic record of the region, and documenting the area’s environmental, geologic, hydrologic, and thermal history.

ʻIke Wai – Hawaiʻi EPSCoR

ʻIke Wai aims to collect new hydrological and geophysical data at two study sites, on Oʻahu and Hawaiʻi Island, to elucidate groundwater flow; develop a new data and modeling platform for Hawaiʻi volcanic hydro-geology, economic modeling, and decision support; and train students, post-doctoral, and faculty researchers.