WRRC hosts a series of seminars during the spring and fall semesters at the University of Hawai‘i at Mānoa. In Fall 2020, in collaboration with the ‘Ike Wai Project, we are providing a forum to increase awareness of water issues pertaining to island hydrology—encouraging discussions of the management and preservation of Hawai‘i’s water resources with respect to climate, population demands, and contamination.

Upcoming Seminars
All lectures will be virtual this Fall via Zoom

Seminars are on Wednesday from 2–3 pm unless otherwise noted

For more information about the Fall 2020 WRRC/‘Ike Wai seminars, please contact: Dr. Sayed Bateni, or Dr. Jonghyun Harry Lee,

  • 30 SEPTEMBER:  The Work-4-Water Initiative: Promoting Workforce Development, Infrastructure Investment, 400 Cesspool Replacements and Water Protection in Hawai‘i’s Four Counties by Stuart Coleman (Executive Director and Co-Founder of Wastewater Alternatives & Innovations) and Michael Mezzacapo (Outreach Specialist at University of Hawai‘i’s WRRC and Sea Grant Program College). Location: UH Manoa Campus, Zoom Meeting.
  • 14 OCTOBER:  Modeling Vadose Zone Processes using HYDRUS and its Specialized Modules by Dr. Jirka Šimůnek (Professor and Hydrologist, Dept. of Environmental Sciences, University of California, Riverside). Location: UH Manoa Campus, Zoom Meeting.
  • 28 OCTOBER:  Measuring and Modeling Aerosol-Cloud-Precipitation Interactions in Complex Terrain: Lessons Learned from IPHEx by Dr. Ana Barros (Civil & Environmental Engineering, Duke University). Location: UH Manoa Campus, Zoom Meeting.
  • 4 NOVEMBER:  Future Desalination for the Pacific Islands by Dr. Albert Kim (UHM Civil & Environmental Engineering). Location: UH Manoa Campus, Zoom Meeting.
  • 18 NOVEMBER:  Compartmentalization of the Terrestrial Water Cycle by Dr. Jeff McDonnell (University of Saskatchewan). Location: UH Manoa Campus, Zoom Meeting.
  • 02 DECEMBER:  Solute Dispersion in Groundwater by Dr. Peter Kitanidis (Stanford University). Location: UH Manoa Campus, Zoom Meeting.
  • 09 DECEMBER:  USGS Pacific Islands Water Science Center. Location: UH Manoa Campus, Zoom Meeting.



Measuring and Modeling Aerosol-Cloud-Precipitation Interactions in Complex Terrain: Lessons Learned from IPHEx

Date: October 28, 2020

Speaker: Dr. Ana Barros


The Intense Observing Period (IOP) Integrated Precipitation and Hydrology Experiment (IPHEx) field campaign took place from 01 May to 15 June 2014 in the southeastern US and centered on the Southern Appalachian Mountains (SAM). IPHEx was one of the ground validation campaigns after NASA’s Global Precipitation Mission (GPM) core satellite launch. Precipitation and aerosol measurements were collected and operated simultaneously at a supersite in the inner mountain region during the IPHEx IOP. Other supersite instrumentation included two radars (W- and X-band), a ceilometer, and a microwave radiometer. The University of North Dakota (UND) Citation Research Aircraft was flown to characterize aerosol and cloud microphysics’ vertical structure, including liquid water content, and hydrometeor-size distributions over the ground sites. This data set offers a great opportunity to perform modeling studies of warm-season cloud formation, leading to precipitation in complex terrain. I will first discuss the regional climatology of clouds and precipitation, including their role in modulating SAM’s hydrology and ecology. Second, we will investigate aerosol-cloud-precipitation interactions (ACPI) leveraging IPHEx IOP observations and two different models: (1) a cloud-parcel model to focus on aerosol-cloud interactions, and (2) a numerical weather prediction model—specifically weather research and forecasting (WRF)—to assess the impact of aerosol properties on precipitation over the SAM. Finally, we synthesize and examine our findings’ implications for the measurement and modeling of orographic precipitation processes generally.

If interested in joining the seminar, please contact:





Previous Seminars 

Modeling Vadose Zone Processes using HYDRUS and its Specialized Module

Date: October 14, 2020

Speaker: Dr. Jirka Šimůnek


Agriculture is one of the most important non-point pollution sources due to the use of chemicals in plant and animal production. Many mathematical numerical models evaluating water flow and the fate and transport of these chemicals in the subsurface were developed over the last three or four decades. These models are now readily available and widely used. This presentation will first briefly review recent versions of the HYDRUS models widely used to model water flow, chemical movement, and heat transport through variably-saturated soils. I will discuss various specialized HYDRUS modules intended to simulate processes not available in the standard HYDRUS versions, such as the transport of multiple interacting solutes, preferential flow, colloid-facilitated solute transport, cosmic ray fluxes, or transport of fumigants. These new modules include the DualPerm, C-Ride, HP1/2/3, Wetland, UnsatChem, Fumigant, Cosmic, Furrow, and Slope3. Finally, I will briefly review many recent applications of the Hydrus models, which include modeling of various irrigation practices, different contaminants, and different cropping systems.

The Work-4-Water Initiative: Promoting Workforce Development, Infrastructure Investment, 400 Cesspool Replacements and Water Protection in Hawai‘i’s Four Counties

Date: September 30, 2020

Speakers: Stuart Coleman and Michael Mezzacapo


To help Hawai‘i deal with the unprecedented COVID-19 and resulting hardships, the Work-4-Water Initiative aims to create a workforce of development projects, and in the process, reduce the amount of pollution from cesspools and support statewide resilient economic and community recovery plans. With more than 88,000 cesspools discharging nearly 53 million gallons of untreated sewage into the ground each day, Hawai‘i has been struggling for years to find solutions to its numerous wastewater issues. The Work-4-Water Initiative provides the state an immediate opportunity to jump-start the mandated replacement of cesspools, while simultaneously training and employing a specialized, non-tourism based workforce. Our plan will create shovel-ready projects across the state, stimulating the economy, and improving water quality and public health for residents and visitors alike through education, hands-on training, job creation, and pilot testing of more than 400 cesspool conversion sites on Hawai‘i, Maui, Kaua‘i, and O‘ahu.

Revitalizing Agriculture in Hawaii

Date: February 28, 2020

Speaker: Kawika Burgess


After more than 100 years of large-scale monocrop (sugar and pineapple) agriculture in Hawai‘i, much of our agricultural lands are now fallow. The once fertile lands are being converted to gentlemen estates and urban sprawl, and zoned for non-agricultural and unsustainable uses. Hawai‘i imports over 85–90% of its food and other necessities and is almost completely dependent on tourism and military spending. However, just a few generations ago, Hawai‘i was completely self-sufficient, producing 100% of its food, fuel, and fiber. Our ancestors created some of the most innovative, adaptive, and efficient agricultural systems in the world. Today, efforts are being made to reshape and revitalize Hawai‘i’s agriculture through regenerative and vertically integrated models. Kalona Brand Company and a growing number of Hawai‘i enterprises are working to grow unique and niche crops, implement regenerative practices, and create value added food and agricultural products. Come and learn about these efforts and discuss how revitalized and sustainable agricultural industry in Hawai‘i can diversify our economy, create rural economic development, support sustainable land use practices, increase local production of food, fiber and other agricultural products, and keep Hawai‘i’s agricultural lands used exclusively for agriculture.

Recent Mini-Argus Coastal Imaging System Applications in USACE Districts

Date: February 26, 2020

Speaker: Dr. Brittany Bruder


The U.S. Army Engineer Research and Development Center (ERDC) developed a system that quickly monitors the state of coastal environments by providing real-time quantitative imagery and engineering data. Previous methods were often costly, time consuming, and could be challenging during storm events when monitoring is needed most. The mini-Argus system provides high-resolution remote video imaging as a quantitative tool for collecting coastal monitoring data efficiently and cost effectively. This presentation includes the results of using the system at three project locations: Duck, North Carolina; New Smyrna Beach, Florida; and Sunset Beach, Hawai‘i.

Simulating Impacts of Land Cover Change and Climate Change on Groundwater Recharge in Maui

Date: February 14, 2020

Speaker: Dr. Laura Brewington


The objective of this study was to develop an integrated land cover/hydrological modeling framework using remote sensing and geographic information systems (GIS) data, stakeholder input, climate information and projections, and empirical data to estimate future groundwater recharge on the island of Maui, Hawaiʻi. Four future land-cover scenarios and two downscaled climate projections were used to estimate the end of the century mean annual groundwater recharge. The future scenarios focus were (1) conservation, (2) maintaining the status quo, (3) development, and (4) balancing conservation and development. The downscaled climate projections developed were (1) “dry future climate” and (2) “wet future climate.” To understand how the changing land management and climate could influence groundwater recharge, the results were compared to the estimated recharge using the 2017 baseline land cover. The estimated recharge increased island-wide under all future land-cover and climate combinations and was dominated by specific land cover transitions. To better describe the availability of groundwater across Maui, the water-budget modeling framework presented in this study provided information on the “supply” side, while the numerical groundwater modeling approach incorporated the “demand” side. Based on our findings, a spatially explicit scenario planning process and modeling framework would be able to communicate the possible consequences and tradeoff of land cover change under a changing climate, and can serve as a relevant tool for landscape-level management and decision making.

Working Together: Using Cloud-Based Collaborative Platforms to Facilitate Hydrologic Modeling and Data Analysis

Date: January 31, 2020

Speaker: Dr. Christopher Shuler


Recent advancements in social networking have influenced how we communicate professionally, how we work collaboratively, and how we approach data-science. Scientific endeavors—especially computational tasks such as groundwater modeling or exploratory data analysis—are poised to take advantage of these new developments. Improving the shareability of information has revolutionized how we work with each other, and revealed a new process-based paradigm that promotes enhanced collaboration and maintenance of long-standing project partnerships. In this presentation I’ll talk about my experiences using various cloud-based platforms such as GitHub and Google Colab to share data and work with researchers and stakeholders on hydrologic projects throughout Hawai‘i and American Samoa. These projects include the continuing development of a collaborative groundwater modeling framework with a water utility in American Samoa; using free google-based tools to manage a multi-disciplinary, statewide effort to understand the effects of non-point wastewater pollution on our coasts; and developing an open-access water budget model that is being used by multiple stakeholders to fill different needs.

Watercress Farming and Climate Change Challenges in Hawai‘i

Date: November 19, 2019

Speaker: Dr. John McHugh


This presentation will discuss the relationship between water and watercress farming at Sumida Farms, the largest watercress farm in Hawai‘i, in the context of climate change. Specifically, key challenges facing Sumida Farms in ensuring their sustainability in the face of climate change will be discussed. During my presentation, I encourage everyone to engage in conversational exchanges about the challenges and opportunities of spring dependent farming in Hawai‘i.

Water Impacts of Invasive Plants in Hawai‘i

Date: November 5, 2019

Speaker: Dr. Tom Giambelluca


Replacement of native plants by non-native invasive species can affect water processes and impact water resources in several ways. Perhaps the most important effect of invasion is the possible increase in transpiration by fast-growing invasive plants, leading to a greater proportion of water input being lost to the atmosphere as evapotranspiration. Invasive plants in Hawai‘i are widely believed to use more water (i.e., to have higher transpiration rates) than the native plants they replace. If true, this would mean that the widespread invasion of Hawai‘i’s ecosystems by non-native plants is having a big negative impact on our water resources by reducing streamflow and groundwater recharge. However, the research to demonstrate the effect of invasion on evapotranspiration is still relatively limited. In this presentation, I will discuss the reasons why invasive plants might be big water users and show the results of our field observations of transpiration and total evaporative water loss in native- and non-native-dominated ecosystems.

Water Accounting for the State of Hawai‘i: Results from O‘ahu and Maui

Date: October 22, 2019

Speaker: Dr. Kirsten Oleson


In this project, we inventoried and assessed the stocks and flows of freshwater in Hawai‘i’s natural systems and human economy, following the integrated approach proposed by the United Nations’ System of Environmental-Economic Accounts for Water. In partnership with potential users of this information and providers of the data, as well as national and international experts, we developed reporting protocols and accounting tables for the Hawaiian Islands that are consistent with national level methods. They include (1) compiling integrated hydrological-economic water supply and use, and asset accounts; (2) identifying data gaps and next steps; and (3) raising awareness of accounting as a tool for sustainable management. The resulting island-scale water supply, use tables, and asset accounts detail stocks and flows between the environment and the economy for the two islands (O‘ahu and Maui). The products can serve as a clarifying guide to make fundamental choices about Hawai‘i’s various paths to economic development. The research can directly inform difficult choices about the water-energy-food nexus critical to Hawai‘i’s sustainability and security.

Supporting Climate Change Decision Making: Data Transformation and Knowledge Exchange with Resource Managers in the Pacific Islands

Date: October 8, 2019

Speaker: Dr. Abby Frazier


Land managers are facing co-occurring threats to their landscapes such as climate change, invasive species, wildfire, and drought. As novel ecosystems and climates emerge—particularly hotter and drier climates—it is critical that scientists produce locally relevant, timely, and actionable science products. Trends in rainfall and characteristics of drought have been analyzed for the State of Hawai‘i since 1920, and additional high-resolution climate datasets have been recently produced (e.g., 25 years of gridded daily rainfall and temperature). However, the ability to use GIS is needed to extract site-specific information as no geospatial tools have been developed. For future climate projections, only raw climate model outputs are available for users. A knowledge exchange and technical assistance process is needed to encourage formal collaboration between researchers and managers. To address this need, we are piloting a knowledge exchange and technical assistance process with individual land managers in Hawai‘i and the U.S.-Affiliated Pacific Islands to co-produce customized site-specific drought and climate data products based on the needs of each manager. To improve the accessibility of the downscaled climate projections in Hawai‘i, the raw outputs have been re-processed and transformed into derived variables in raster format and standardized across models. This often-overlooked role of translating scientific outputs into usable, accessible data formats and engaging resource managers in research planning and knowledge co-production is essential to enable and support informed climate change decision making.

Natural and Contaminant Chemistry of Freshwater Streams, Groundwater, and Wastewater Treatment Plant Effluents on the Hawaiian Islands

Date: September 24, 2019

Speaker: Dr. Larry Barber


Sustainability of freshwater resources on island ecosystems relies on a detailed understanding of the sources and loading of contaminants and their impact on water quality. Considerable attention has been given to constituents such as nutrients and bacteria, but less is known about the occurrence and sources of unregulated contaminants such as trace elements and consumer product chemicals (pharmaceuticals and personal care products). Between 2014 and 2016 the U.S. Geological Survey conducted a survey of Hawaiian freshwaters on the islands of Kauai, Oahu, Maui, and Hawaii to assess the inorganic and organic chemistry of surface water and groundwater systems. This survey provides an important benchmark of the occurrence and sources for a variety of contaminants that are not typically investigated.

Hydrological Modeling Challenges in Hawaii and the Pacific

Date: September 13, 2019 • 3:30 pm

Location: POST 723, UH Manoa Campus

Speaker: Dr. Aly I. El-Kadi (Dept. of Earth Sciences & Water Resources Research Center)


Hydrological modeling in Hawaii and similar areas is challenging due to complicated hydrogeological features, steep topography, and variable climate conditions. This presentation will discuss the modeling efforts of the hydrology group over the past decades. Specifically covered include effects of climate change on Heeia watershed, American Samoa groundwater sustainability, surface water harvesting, and modeling of local scale geological variability. Progress of the current ‘Ike Wai modeling for West Hawaii’s groundwater will be also covered. Model developments are derived by the scale of the problem, data availability, and modeling objectives.

Stochastic Modeling of the Earth Subsurface: Dealing with Unobserved Natural Systems

Date: September 10, 2019

Speaker: Dr. Grégoire Mariéthoz


Many hydrological processes taking place at the Earth’s surface are directly observable, either through in-situ measurements or by using remote sensing techniques. In contrast, understanding properties of the subsurface poses formidable observational challenges. Firstly, measurements of the Earth’s interior are either difficult and expensive to acquire (e.g., boreholes) or indirect (e.g., measurement of subsurface flow and tracer concentrations). Secondly, the Earth’s interior is 3-dimensional, resulting in very empty data spaces. For example, even intensive drilling campaigns and geophysical surveys of an aquifer often sample only a small fraction of the total rock volume.

This talk will present stochastic aquifer modeling approaches that allow quantifying uncertainty in such data-poor problems. For many practical questions, the uncertainty in subsurface hydraulic properties further propagates into uncertainty in water resources management problems—for example, the transport of contaminant to a drinking water well, the intake of a groundwater-based desalination plant, or the behavior of a tracer in a subglacial drainage system. Stochastic aquifer models allow using a statistical description of the unobserved system to formulate ensemble predictions, resulting in a distribution of possible outcomes. The use of stochastic models will be illustrated in different environments, focusing on applications that integrate indirect data through inverse approaches.

Flow in Funky, Fractured, Faulted Formations: What Do We Need for Prediction in the Deep Subsurface?

Date: May 28, 2019

Speaker: Dr. Michael Cardiff

Abstract: The deep subsurface is increasingly being called upon to meet humanity’s growing water, energy, and waste containment needs. This zone — which for fluid flow purposes may roughly be defined as between 100 m and 5 km below land surface — is a region where the process of flow through fractures is likely to contribute strongly to flow and transport, and where dual-domain behavior in both primary and secondary porosity is likely to occur. Similarly, this region represents a domain where complex interactions between fluid flow, rock mechanics, and heat and chemical transport are likely to take place. Engineering applications as diverse as CO2 sequestration, hydraulic fracturing, liquid waste disposal, and geothermal energy extraction will all benefit from a more comprehensive understanding of this hard-to-access part of the Earth where observations are limited and expensive. In this talk, I will discuss field, experimental, and modeling techniques that can be leveraged to gain insights about properties and coupled processes in deep, fractured environments. In particular, I will focus on technologies and experimental designs that hold promise for illuminating the vitally important permeability structure in difficult environments such as fractured or faulted rock. As an example in the field, I will summarize recent work during the hydrogeophysical “PoroTomo” experiment performed at a 2 km-deep geothermal reservoir near Fernley, NV.

Evaluating the Effects of Future Climate and Land-Cover Conditions on Groundwater Resources for the Island of Maui, Hawai‘i

Date: April 23, 2019

Speaker(s): Drs. Victoria Keener, Laura Brewington, and Alan Mair

Part I. Participatory Scenario Planning for Climate Change Adaptation: Projected Future Climate and Stakeholder-Defined Land-Cover Scenarios for the Island of Maui, Hawai‘i —Victoria Keener and Laura Brewington (East-West Center & NOAA Pacific Regional Integrated Sciences & Assessments)

Abstract: For the last century, the island of Maui has been the center of environmental, agricultural, and legal conflict with respect to both surface and groundwater allocation. Planning for sustainable future freshwater supply in Hawai‘i requires adaptive policies and decision-making that emphasizes private and public partnerships and knowledge transfer between scientists and non-scientists. To quantify future changes in an island-scale climate and groundwater recharge under different land uses, we will discuss downscaled dynamical and statistical future climate projects used in a participatory scenario building process. The participatory scenario planning began in 2012, bringing together a diverse group of ~100 decision-makers in government, watershed restoration, agriculture, and conservation to (1) determine the type of information they would find helpful in planning for climate change, and (2) develop a set of nested scenarios that represent alternative climate and management futures. This integration of knowledge is an iterative process, resulting in flexible and transparent narratives of complex futures comprised of information at multiple scales. We will present an overview of the downscaling, scenario building, and stakeholder response.

Part II. Groundwater Recharge for Projected Future Climate and Stakeholder-Defined Land-Cover Scenarios for the Island of Maui, Hawai‘i —Alan Mair (USGS Pacific Islands Water Science Center)

Abstract: Groundwater availability on Maui can be affected by changes in climate and land cover. To evaluate the availability of fresh groundwater under projected future climate and stakeholder-defined land-cover conditions, estimates of groundwater recharge are needed. As such, a water-budget model developed by the U.S. Geological Survey was used to estimate the spatial distribution of recharge for 11 unique combinations of climate and land-cover conditions. A variety of available research material was used in this study to represent the diversity of conditions, including two sets of end-of-century climate projects developed by University of Hawai‘i researchers, and future land-cover scenarios developed by Pacific RISA researchers. In one combination of climate and land-cover conditions, the results of the water budget for two future climate scenarios indicated a decrease across central and leeward areas of Maui, increases across windward areas of Haleakala, and opposing changes for the remaining parts of Maui. The projected changes in recharge for the future land-cover scenarios do suggest that appropriate land management may help to mitigate the effects of a drying climate.

Characterizing the Stream and its Association With the Ecosystem in Hawai‘i 

Date: April 16, 2019

Speaker: Dr. Yin-Phan Tsang, Assistant Professor, Natural Resources and Environmental Management, CTAHR

Abstract: This presentation will consist of two parts, based on recent studies focusing on Hawaiian streams and ecosystems.

Part I. Characterizing Natural Barriers to Non-native Stream Fauna in Hawai‘i—Waterfalls are natural barriers that influence the distribution and dispersion of aquatic species. In Hawai‘i, it is assumed that non-native species are unable to pass waterfall barriers, yet they are still present above some waterfalls, possibly facilitated by human introduction. In this study, we used a landscape approach to identify likely human introductions and examined the ability of 14 non-native stream fauna to bypass waterfalls when the possibility of human introduction is eliminated. This study highlights the role that people play in facilitating species introductions in otherwise inaccessible habitats.

Part II. Temporal Shifts in the Magnitude of Peak Streamflow and Its Associated Rainfall Across the Hawaiian Islands—Previous studies show that extreme rainfall events are becoming more common. However, there is little research available that examines the temporal and spatial trends of peak streamflow (peak flow) events associated with heavy rainfall events. We analyzed the annual peak flow and the annual maximum rainfall trends of 112 stream crest gages from the U.S. Geological Survey, and an additional 82 rain gages from the National Centers for Environmental Information, across the Hawaiian Islands from the water years 1970 to 2005. To add to the current knowledge of flood risk and management in Hawai‘i, our study discussed how the annual peak flows changed over time, patterns in their spatial distribution, and how they are associated with rainfall.

*Please note, due to technical circumstances, the audio was unable to be captured during the video presentation below. We apologize for any inconvenience.*

Challenges in Evaluating Microbial Beach Water Quality in Hawai‘i

Date: April 2, 2019

Speaker: Dr. Marek Kirs, Microbiologist, WRRC

Abstract: In an effort to improve current water quality monitoring programs, the Water Resources Research Center has been engaged in multiple research projects pertaining to microbial water quality indicators, specifically in a tropical environment. This presentation will summarize the results of selected projects from 2013 to 2019. The projects addresses two major issues hampering the application of the EPA recommended Recreational Water Quality Criteria in Hawai‘i: (1) the growth of the current microbial water quality indicators in extra-enteric environments (i.e., soils and vegetation), and (2) the lack of information on contamination sources when the microbial water quality indicators are detected. My presentation will focus on the following, as it applies to Hawai‘i: (1) our current efforts to determine the health risk associated with current and alternative microbial water quality indicator levels, (2) the evaluation and application of molecular microbial source tracking (MST) methods, (3) the evaluation and application of rapid EPA method 1609 and 1611 for beach notification purposes, (4) utilization of a portable multi-use automated concentration system (PMACS) for the MST in our coastal environments, and (5) the hidden bacterial diversity in our groundwater.

Estimation of Evapotranspiration and Gross Primary Productivity via Variational Assimilation of Remotely Sensed Land Surface Temperature and Leaf Area Index

Date: January 22, 2019

Speaker: Dr. Sayed Bateni

Abstract: To estimate evapotranspiration and gross primary productivity, land surface temperature (LST) and leaf area index (LAI) measurements were assimilated into a coupled surface energy balance-vegetation dynamic model (SEB-VDM) within a variational data assimilation (VDA) system. The SEB and VDM are coupled by relating photosynthesis in the VDM to transpiration in the SEB equation. The unknown parameters of the VDA system are (1) bulk heat transfer coefficient (CHN), (2) soil evaporative fraction (EFs), (3) canopy evaporative fraction (EFc), and (4) specific leaf area (cg). The performance of the VDA approach was tested in the Heihe River Basin (HRB) extensively, which is located in northwest China. The results show that the developed VDA framework performs well in different environmental conditions, and the estimated evapotranspiration and gross primary productivity agree well with the corresponding measurements from the eddy covariance stations.

Dr. Sayed Bateni’s seminar – January 22, 2019

September Hanauma Bay Freshwater Seminar Series

Throughout the month of September, the public will have the opportunity to talk story with the producer and host of Hawai‘i Sea Grant’s Voice of the Sea television series Kanesa Duncan Seraphin, and other experts featured in the series, at the Hanauma Bay Education Program’s Thursday seminar series.

Beginning on September 5 and running throughout the month, the public is invited to watch the newest episodes highlighting critical issues surrounding freshwater in Hawai‘i. As a thank you for attending the seminar, each audience member will be entered for a chance to win a free pair of Maui Jim sunglasses. (The drawing to be held on September 26, need not be present to win, no purchase necessary.)

The viewing and talk story sessions will be held every Thursday from 6:30pm to 7:30pm at the Hanauma Bay Nature Preserve’s visitor center.

September 5 – Restoring Forests and Recharging Aquifers
Experts from the Department of Land and Natural Resources (Suzanne Case); Kamehameha Schools (Ka‘eo Duarte); and The Nature Conservancy (Sam Ohu Gon) will be on hand to talk story about the importance of forests and native plants in capturing water to recharge Hawai‘i’s underground aquifers,

September 12 – Conserving Fresh Water in Hawai’i
As Hawai‘i faces a future of reduced rainfall, increased drought, and a growing population, specialists from the Honolulu Board of Water Supply will be sharing tips on protecting freshwater in our homes and in our communities.

September 19 – Recycling H2O
All the water used for drinking, cooking, washing, and growing food is recycled through the water cycle, but it is a long process when it occurs naturally. Experts from the Lāna‘i Water Company (Joy Gannon); ITC Water Management, Inc. (Elson Gushiken); and Roth Ecological Design (Lauren Roth) will be discussing how modern technologies recycle water much more quickly in order to preserve natural water stores and send less wastewater out into the ocean.

September 26 – Wai Maoli: Fresh Water for Life
Professionals from the Hawai‘i Community Foundation will be discussing freshwater initiative for the year 2030, and the Wai Maoli: Hawai‘i Fresh Water Initiative which is designed to address and resolve water supply issues.

Where: Hanauma Bay Nature Preserve, Visitor Center
When: Thursday evenings from 6:30pm to 7:30pm (please arrive at 6:15pm)
Cost: Parking is free after 4:00pm, no admission fee for the seminar
Phone: (808) 397-5840 or email:

Green Energy in the Wastewater Industry: Moving to Net Zero Energy in Hawaii

The Hawaii Water Environment Association in collaboration with the Water Resources Research Center recently organized a one-day workshop on the use of green energy at wastewater treatment facilities, and how this might be implemented in Hawaii.

August 2, 2017 Workshop