Pacific Islands Water Science Center
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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
USGS Unveils Mobile Flood Tool for the Nation
The U.S. Geological Survey announced Friday the completion of a new mobile tool that provides real-time information on water levels, weather and flood forecasts all in one place on a computer, smartphone or other mobile device.
Adaptive management strategies for potential impacts of climate change on Guam
Guam’s water demands are anticipated to increase. Potential impacts of sea-level rise and a changing climate on surface-water and groundwater resources are assessed.
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.
Publications
Source-tracking approach for detecting and identifying sources of wastewater in waters of Hawaiʻi
Elevated concentrations of nutrients and the fecal-indicator bacteria enterococci are occasionally detected in Hawai‘i’s surface waters by the State of Hawai‘i Department of Health Clean Water Branch. Management efforts to improve the water quality of surface waters are complicated by the fact that nutrients and enterococci can originate from...
Johnson, Adam G.
Low-flow characteristics of streams from Wailua to Hanapēpē, Kauaʻi, Hawaiʻi
The purpose of this study is to characterize streamflow availability under natural (unregulated) low-flow conditions for streams in southeast Kaua‘i, Hawai‘i. The nine main study-area basins, from north to south, include Wailua River, Hanamā‘ulu, Nāwiliwili, Pūʻali, Hulēʻia, Waikomo, Lāwaʻi, and Wahiawa Streams, and Hanapēpē River. The results of...
Cheng, Chui Ling
Local to landscape-level controls of water fluxes through Hawaiian forests: Effects of invasive animals and plants on soil infiltration capacity across substrate and moisture gradients
Given the potential effect of invasive plants and animals to water fluxes through forests, the invasive-driven degradation of native ecosystems is a topic of great concern for many downstream land and water managers. The infiltration rate determines the partitioning between runoff and infiltration into soil in Hawaiian forests and beyond. Thus, to...
Fortini, Lucas B.; Leopold, Christina; Perkins, Kimberlie; Chadwick, Oliver A.; Yelenik, Stephanie G.; Jacobi, James D.; Bishaw, Kaiena; Gregg, Makani; Rosa, Sarah N.