2015 Water Resource Sustainability Issues on Tropical Islands Conference

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[/vc_column_text][vc_column_text]Held on December 1 – 3, 2015 at the Hilton Hawaiian Village in Honolulu, Hawaii

The 2015 conference built on discussions and interactions from a previous conference hosted by the four Island Institutes (WRRC, WERI, PRWRERI, and VI-WRRI) in Honolulu, Hawaii from November 14–16, 2011. The discussions strengthened the synergism between researchers working in the State of Hawaii, U.S. affiliated islands in the Pacific, U.S. Virgin Islands, and Puerto Rico, and developed solutions and ideas on water resources issues that are particularly relevant to tropical islands.

2015 Conference Resources

Video Message from U.S. Senator Mazie Hirono[/vc_column_text][gem_video width=”720″ height=”405″ video_src=”https://www.wrrc.hawaii.edu/video/hironovid.mp4″ image_src=”1064″][vc_empty_space][vc_column_text]


Aly I. El-Kadi, Associate Director, WRRC; Professor, Dept. of Geology & Geophysics, SOEST, UHM and Conference Chair

Earl Greene, Chief, Office of External Research, USGS

Shahram Khosrowpanah, Director, Water and Environmental Research Institute of the Western Pacific, University of Guam

Jorge Rivera-Santos, Director, Puerto Rico Water Resources and Environmental Research Institute

Kristin Wilson Grimes, Director, Virgin Islands Water Resources Research Institute

Darren T. Lerner, Interim Director, WRRC; Director, Sea Grant College Program, UHM


*Slides are posted with author’s consent. Please directly contact authors of these presentations or others not listed if you are interested in more information.*

SESSION A • Sustainability Groundwater and Watershed Studies, Part 1 — Session Chair: Henry Smith

A01 Nathan C. Habana, John W. Jenson, and Stephen B. Gingerich. Exploring Best-Practice Capacities of the Northern Guam Lens Aquifer

A03 Paula A. Cutillo. Determining Groundwater Sustainability—A Public-Trust Resource Perspective


SESSION C • Protection Strategies for Island Watersheds and Aquifers — Session Chair: Jorge Rivera-Santos

C02 Shahram Khosrowpanah, Mark Lander, Sydonia Manibusan, Bill Whitman, and John Jocson. Watershed Management: Ugum, Piti-Asan, Geus Watershed

C03 Scot K. Izuka. Assessing Groundwater Availability in Hawai‘i’s Diverse Hydrogeologic Settings

C05 Robert E. Bourke, Natalie Waters, and Jordan Moniuszko. Kaelepulu: An Investigation of Flow Restoration, Mixing and Exchange in an Urbanized Estuary to Help Define Restoration Alternatives


SESSION D • Water Quality: Application of Techology and Adaptive Management — Session Chair: Roger Fujioka

D01 Joseph D. Rouse. Studies of Enhancement of Sewage Treatment and Composting of Sludge on Yap Island


SESSION E • Water Quality: Surface Water — Session Chair: Roger Fujioka

E01 Stanley B. Grant (invited), Asal Askarizadeh, and Megan A. Rippy. From Rain Tanks to Catchments: Use of Low- Impact Development to Address Hydrologic Symptoms of the Urban Stream Syndrome

E02 Pedro J. Tarafa, Sheila Arias, Leroy Goñez, and O. Marcelo Suarez. Micro- and Nanosized Titanium Dioxide Particles Immobilized in Sintered Recycled Glass for the Degradation of Trihalomethane Precursors from Surface Waters


SESSION G • Climate Change and Variability and Impacts on Water Resources, Part 1 — Session Chair: Stephen Anthony

G02 Pao-Shin Chu, Chris O’Conner, Pang-Chi Hsu, and Kevin Kodama. Variability of Hawaiian Winter Rainfall During La Niña Events

G03 Md. Rashed Chowdhury. Water, Climate, and Local Governance: Experience from the Pacific Islands

Lunch/Speaker: Senator Thomas Ada (invited)


SESSION H • Coastal Groundwater — Session Chair: Shahram Khosrowpanah

H02 Isaac Santos (invited). Tropical Islands as Submarine Groundwater Discharge Hotspots

H03 Henrietta Dulai, Alana Kleven, Kathleen C. Ruttenberg, Rebecca A. Briggs, and Florence I.M. Thomas. Submarine Groundwater Discharge and Corresponding Nutrient Fluxes in Kaneohe Bay, Oahu

H04 Craig R. Glenn, Joseph J. Kennedy, Henrietta Dulai, Paul G. Lucey, Jacque L. Kelly, and Joseph K. Fackrell. Coupling Aerial Infrared Imaging from Aircraft and Drone with Radon Time Series for Mapping and Quantifying Groundwater and Nutrient Discharge from Coastal Aquifers


SESSION J • Sustainability Groundwater and Watershed Studies, Part 2 — Session Chair: Henry Smith

J01 M. Kirs, E.A. Kearns, S.M. Castillo, D.V. Lim, and R.S. Fujioka. High-Volume Ultrafiltration: Going Beyond Indicator Bacteria


SESSION K • Sustainability Groundwater and Watershed Studies, Part 3 — Session Chair: Earl Greene

K01 Kolja Rotzoll, Scot K. Izuka, Tracy Nishikawa, Michael N. Fienen, and Aly I. El-Kadi. Quantifying Effects of Humans and Climate on Groundwater Resources Through Modeling of Volcanic-Rock Aquifers of Hawaii

K02 Leroy F. Heitz and Shahram Khosrowpanah. Using a Geographic Information System to Predict Flow Duration Curves at Ungaged Stream Sites in Guam


SESSION L • Sustainability Integrated Programs—SessionChair: EarlGreene

L01 David Sumner for Rafael W. Rodriguez (invited). Water Resource Sustainability Issues—Puerto Rico and U.S. Virgin Islands


SESSION M • Managing Demands and Supplies, Including Water Conservation and Reuse — Session Chair: Shahram Khosrowpanah

M03 Daniele Spirandelli, Michael Roberts, Kimberly Burnett, and Christopher Wada. Toward an Understanding of Residential Water Conservation Behaviors on Oahu[/vc_column_text][vc_empty_space][vc_column_text]


*These presentations are posted with author’s consent. Please directly contact respective authors or others not listed if you are interested in more information.*

Jason Knoche, Joe Mcclure, and Dan Clegg. Reducing Irrigation Overuse Through Research into Precision Irrigation.

Erin Allmann, Zi Wang, Si Sun, Marek Kirs, Mayee Wong, and Yuanan Lu. Monitoring of Hawaii’s Beaches Water Quality Using Enteric Viruses as Alternative Indicators.

William H. McDowell. Spatial and Temporal Variability in Urban Water Quality on a Tropical Island.

Dayananda Vithanage. Impacts from Current Wastewater Management on Water Resources of Small Islands.

P. Moravcik, K. Fernandes, B.J. Card, T.-C. Lee and C.C.K. Liu.Survey and Modeling Analysis of HDOT MS4 Highway Storm Runoff on Oahu, Hawaii.[/vc_column_text][vc_empty_space][vc_column_text]


Presentation Abstracts
Full Program


Island communities are faced with a unique set of environmental and cultural issues pertinent to the management of water resources. Fresh water resources are under threat on many islands as the result of both overuse and contamination. Ocean waters in these tropical regions are ecologically sensitive and valuable, and similarly threatened by pollution. On some islands, sea level rise is degrading groundwater resources.  

Most island communities are heavily dependent on importing essentials, such as food, fuel, and manufactured goods to satisfy their resource needs. In addition, population growth is putting increasing pressure on water resources. It is imperative that these threats to the welfare of island communities be addressed by sound scientific research before they reach crisis proportions. To prevent water shortages, sustainable management and protection of island water supplies is even more critical than it is on the continents, as island communities have no water resources for importation. Those tasked with resource protection and management need access to scientifically sound research that is specific to island environments.  

The above issues are universal to island states, yet researchers in these far-flung and isolated places seldom have the opportunity to share knowledge and experience with one another, as they mainly work in isolation. The great distance that separates most island states from the larger centers of academia and government means that there is a less frequent exchange between researchers on the islands and their colleagues in the major population centers. Enhanced communication and collaboration between island researchers can provide a vital, synergistic link, which will strengthen all research programs. It is a truism that the greatest scientific advances usually result from a collaboration of researchers working together.[/vc_column_text][vc_empty_space height=”300px”][/vc_column][/vc_row]