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The WRRC serves the State of Hawai‘i, as well as other Pacific islands and elsewhere, by researching water-related issues distinctive to these areas. We are Hawai‘i’s link in a network represented in every state, as well as Washington, D.C., and three U.S. Territories.

Water Quality

Ecology

Public Health Sciences

Hydrological Sciences

Social Dimensions
& Economics

Water & Wastewater
Engineering

Environmental

Assessment & Protection

Recent Posts

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WRRC Presents Sewer System Expansion at Mānoa Research Day

February 2026

Water Resources Research Center (WRRC) faculty member Dr. Christopher Shuler and researchers Aimee Schriber and Autumn McCarter represented WRRC at the fourth annual University of Hawaiʻi at Mānoa Research Day at the State Capitol....

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WRRC Receives Global Ranking Recognition in Water Resources

January 2026

The University of Hawaiʻi at Mānoa Water Resources Research Center (WRRC) was recognized under the Water Resources category in the 2025 Global Ranking of Academic Subjects....

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UH Mānoa Researchers Lead Design, Demonstration of ‘Honu Hub’ Systems: $5M NSF Award to Address Outdated Wastewater Infrastructure

January 2026

Addressing the critical environmental and public health impact of outdated wastewater infrastructure on island communities is the aim of a University of South Florida project, in collaboration with the University of Hawaiʻi at Mānoa, that was awarded a three-year, $5 million cooperative agreement from the U.S. National Science Foundation....

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WRRC Presents Cesspools Project at Hawaiʻi State Capitol

December 2025

WRRC faculty member Dr. Christopher Shuler and researchers Aimee Schriber and Robert Litt, alongside engineers from Carollo Engineering, briefed lawmakers in the House Majority Caucus at the Hawaiʻi State Capitol as part of a “Lawmakers Learn” series, delivering an overview of the state’s cesspool challenges and ongoing University of Hawaiʻi and Carollo Engineering projects related to cesspools....

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Aurora Kagawa-Viviani Supports $1.25M NSF Project to Develop Hazard-Monitoring Sensors and Build Community Engagement

December 2025

Principal investigator and UH Mānoa College of Engineering Associate Professor Tyler Ray, co-principal investigator and Water Resources Research Center Assistant Professor Aurora Kagawa-Viviani, and Associate Professor at Georgia Tech Josiah Hester have earned a new $1.25 million National Science Foundation project grant....

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Joint $25M National AI Project and Hawaiʻi Mesonet Will Better Monitor Rainfall and Wildfires

November 2025

The Water Resources Research Center (WRRC) joined a new $25.6 million National Science Foundation (NSF) project led by Northwestern University to develop and understand the integration, programming, and use of AI across scientific computing resources and high-resolution environmental sensors and instruments, such as cameras, microphones, and weather sensors....

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Xiaolong "Leo" Geng Receives National Science Foundation Grant Award

August 2025

Congratulations to Dr. Xiaolong "Leo" Geng for leading and winning a U.S. National Science Foundation (NSF) Standard Grant award for his proposal, "Hydrogeologic Controls on the Accumulation, Transport, and Discharge of Fecal Indicator Bacteria in Coastal Beaches." The project presents a comprehensive approach that combines state-of-the-art surface water, groundwater, and reactive transport modeling, along with field measurements. This award...