Pacific Islands Water Science Center

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Hydrologic Monitoring and Investigations

Hydrologic Monitoring and Investigations

The USGS Pacific Islands Water Science Center provides reliable, objective scientific information to address water-related issues in the State of Hawaiʻi and the U.S. Affiliated Pacific Islands. 

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News

Date published: August 16, 2019

Understanding Freshwater Availability on Maui Under Projected Future Climate Conditions

Demand for freshwater on the island of Maui is expected to increase by 45 percent between 2015 and 2035. Wetter and drier climate scenarios impact the availability of groundwater to meet this demand. 

Date published: June 1, 2016

PIWSC Main Office--New Home

The main office of the Pacific Islands Water Science Center is located on Ford Island.

Publications

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Year Published: 2019

Estimated groundwater recharge from a water-budget model incorporating selected climate projections, Island of Maui, Hawai‘i

Demand for freshwater on the Island of Maui is expected to increase by 45 percent between 2015 and 2035. Groundwater availability on Maui is affected by changes in climate and agricultural irrigation. To evaluate the availability of fresh groundwater under projected future climate conditions and changing agricultural irrigation practices,...

Mair, Alan; Johnson, Adam G.; Rotzoll, Kolja; Oki, Delwyn S.
Mair, A., Johnson A.G., Rotzoll, Kolja, and Oki, D.S., 2019, Estimated groundwater recharge from a water-budget model incorporating selected climate projections, Island of Maui, Hawai‘i: U.S. Geological Survey Scientific Investigations Report 2019–5064, 46 p., https://doi.org/10.3133/sir20195064.

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Year Published: 2019

Tropical cyclone projections: Changing climate threats for Pacific Island defense installations

Potential changing climate threats in the tropical and subtropical North Pacific Ocean were assessed, using coupled ocean-atmosphere and atmosphere-only general circulation models, to explore their response to projected increasing greenhouse gas emissions. Tropical cyclone occurrence, described by their frequency and intensity, near islands...

Widlansky, Matthew J.; Annamalai, Hariharasubramanian; Gingerich, Stephen B.; Storlazzi, Curt D.; Marra, John J.; Hodges, Kevin I.; Choy, Barry; Kitoh, Akio

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Year Published: 2018

Groundwater-level, groundwater-temperature, and barometric-pressure data, July 2017 to February 2018, Hālawa Area, Oʻahu, Hawaiʻi

The Red Hill Bulk Fuel Storage Facility, operated by the U.S. Navy and located in the Hālawa area, Oʻahu, Hawaiʻi, includes 20 underground storage tanks that can hold a total of 250 million gallons of fuel. In January 2014, the U.S. Navy notified the Hawaiʻi Department of Health and U.S. Environmental Protection Agency of release of an estimated...

Mitchell, Jackson N.; Oki, Delwyn S.
Mitchell, J.N., and Oki, D.S., 2018, Groundwater-level, groundwater-temperature, and barometric-pressure data, July 2017 to February 2018, Hālawa Area, O‘ahu, Hawai‘i: U.S. Geological Survey Open-File Report 2018–1147, 35 p., https://doi.org/10.3133/ofr20181147.