TOPICS: DEVELOPMENT

A comprehensive approach to value Waikīkī Beach

PI: Nori Tarui
Waikiki Beach is a huge economic driver for Hawaiʻi, but with increased erosion from sea-level rise, the optimal strategy for its upkeep is still debated. This study endeavors to estimate the value of Waikiki’s benefits to tourists, residents, and businesses, and evaluate the costs of different beach improvement options.

About the Center

"Smart Building" is the process of designing and constructing a structure while considering how it will interact with its inhabitants and its environment. Is it a nice place to work? Is it an efficient place to work? Does it take ...

Assessing the vulnerability of coastal wastewater infrastructure to climate change

PI: Daniele Spirandelli
This research aimed, with community and agency stakeholders, to identify and map critical factors contributing to wastewater infrastructure vulnerability to a changing climate, particularly sea-level rise and extreme precipitation, and to develop a process that builds adaptive capacity into the system. Results showed groundwater inundation as a significant threat to sewer pipes, and a policy gap analysis identified discontinuities in key components of Hawaiʻi’s current onsite management program between land-use planning efforts and state siting regulations.

Building on the Shore

In this episode, we’re learning about coastal erosion and how it affects homes built near the shore. We explore the coastline with Hawai’i Sea Grant Extension Agent, Ruby Pap, and County of Kauai planner, Kaʻaina Hull, to see what happens when buildings are ...

Collaborative Study of Groundwater Transport Paths and Discharge Loads of Wastewaters and Other Land-Uses that Impact the Ewa Coastal Zones of West Oʻahu

PI: Craig Glenn
On-site sewage disposal systems threaten groundwater quality via the release of untreated sewage effluent to the environment. This work plans to use remote sensing techniques with field studies to establish groundwater flow paths and contaminant transport around Ewa Beach, Oʻahu, to aid in future remediation strategizing.

Do seawalls lower property values?

PI: John Lynham
This work examined the economic consequences of a strategy commonly used in years past of building sea walls to protect property threatened by increased coastal erosion. Based on a technique previously used successfully by the authors in San Diego, CA, the researchers examined property sales on Oʻahu for the last 30 years and combined this with locations of seawalls built over those years. They found that while properties with coastal armoring maintain their value, there is evidence that neighboring properties show a decrease in value with time.

Economic activity, technological progress, and water resource utilization on Oʻahu

PI: Peter Fuleky
These researchers are developing summary measures of economic conditions in various industries (especially tourism, health care, food, and agriculture) to establish the levels of dependency on the state’s limited water resources and likely future demand under various scenarios of economic, technological, and population change.

Economic Impact Analysis of the Potential Erosion of Waikīkī Beach

This report provides an update to a 2008 report on the value of Waikīkī Beach using 2016 economic and visitor arrival data. Hospitality Advisor’s 2008 report concludes that just under $2 billion (2007 U.S. dollars) in overall visitor expenditures could ...

Economic Impact Analysis Waikiki Beach: A 2016 Update

This report provides an update to a 2008 report on the value of Waikīkī Beach using 2016 economic and visitor arrival data. Hospitality Advisor’s 20081 report concludes that just under $2 billion (2007 U.S. dollars) in overall visitor expenditures could ...

Envisioning In Situ Sea Level Rise Adaptation Strategies for a Densely Developed Coastal Community, Waikiki

PI: Wendy Meguro
Waikiki, an economic hub for Hawaiʻi, is already subject to regularly flooding and faces an uncertain future with sea-level rise. This project will offer conceptual design renderings towards an “in-place” adaptation strategy, to help motivate large-scale planning for an adaptive environment in this densely developed coastal community.

External Websites

Green Infrastructure for Stormwater Management Home The Environmental Protection Agency site on Green Infrastructure. This site contains information to help you build and learn about national partnerships.The National Nonpoint Education for Municipal Officials (NEMO) Network is a collection of outreach ...

Glossary

Green Infrastructure for Stormwater Management Home A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z A An aquifer is a formation, group of formations, or part ...

Green Infrastructure Practices

Green Infrastructure for Stormwater Management Home Green infrastructures have a lot of benefits and can be implemented during construction or as retrofits. On this page you can browse summaries on green infrastructures practices. Rain Garden/Bioretention Area Bioswale Permeable Pavements Flow-Through ...

Guidance for Disaster Recovery Preparedness in Hawaii

Through a National Oceanic and Atmospheric Administration (NOAA) Regional Coastal Resilience Grant, the Hawaiʻi Sea Grant College Program together with the State of Hawaiʻi Department of Land and Natural Resources (DLNR), Office of Planning, and Tetra Tech, Inc., developed statewide ...

Hawai‘i Sea Level Rise Viewer

Across the Hawaiian Islands vulnerability to coastal hazards is increasing with climate change and sea level rise and as development along our shorelines continues to expand. Access to high-resolution local hazard exposure and vulnerability data and maps is critical for ...

Hawaii Coastal Hazard Mitigation Guidebook

As a coastal homeowner, have you ever wondered where to get technical, yet easy to understand information about minimizing erosion concerns on your property? Or as a contractor have you thought about how vulnerable your building is to a hurricane? ...

Identifying hot spots of sewage pollution in Hilo, Hawaiʻi

PI: Tracy Wiegner
Hawaiʻi banned new cesspools in 2015, but groundwater contamination from the remaining 8700 cesspools in the Hilo area is a continuing concern. This work will use dye tracer studies to track cesspool outflows and use sewage indicators to establish contaminant sources to coastal groundwaters to inform future management decisions.

Integrating Coastal Hazards and Sea Level Rise Resilience in Community Planning

Over the past decade, Hawai‘i has progressed in recognizing and addressing coastal hazards and the need for adaptation to sea level rise. However, more work still needs to be done to translate broad-scale guidelines and scientific information into action at ...

Investigating the origin and impact of sedimentation on the health of Hawaiian mesophotic reefs for sustainable coastal development

PI: Robert Toonen
This project continues collecting data from mesophotic zones (30-180 m depths) around Oʻahu and West Maui to update models and develop predictive maps of coral and invasive algae distribution, in order to help managers and policymakers choose best strategies for coastal development and runoff control to protect these vulnerable low-light ecosystems.

Ka Pili Kai Fall 2016

Center of Excellence: Coastal and Climate Science and Resilience Center of Excellence: Marine Science Education Center of Excellence: Smart Building and Community Design Center of Excellence: Sustainable Coastal Tourism Institute of Hawaiian Language Research and Translation To address the needs, ...

Ka Pili Kai Spring 2016

Humpback Whale Vocal Communications Between Mothers and Calves Wastewater’s Influence on Coastal Groundwater Quality and the Health of Coral Reefs in Maunalua Bay, O‘ahu Attack of the Drones: Characterizing Groundwater Discharge on Maui Using the Latest Research Tools Simulating Sea-Level ...

Ka Pili Kai Summer 2016

Hawai‘i ’s Water Resources Submarine Groundwater Discharge Water Resources Research Center Highlight: Dr. Aly El-Kadi UH Water Resources Research Center and Sea Grant Partner on $20 M Water Sustainability Project Increasing Access to Safe Drinking Water on Hawai‘i Island The ...

Land-based pollutants in herbivorous reef fishes on Hawaiian reefs

PI: Megan Donahue
This work compares concentrations of metal pollutants in reef fish muscle tissue collected at several sites suffering, to different degrees, from contamination due to urban runoff into watersheds and coastal waters. The researchers aim to identify species and locations most impacted and aid communities to minimize the effects of land-based pollutants on coral reefs.

Land-based pollutants on Hawaiian reefs

PI: Megan Donahue
Increased military, agricultural, and residential development contaminates surrounding watersheds that feed into critical coastal ecosystems. This work examines land-based pollutants, such as metals and persistant organics, in coastal ecosystems and reef fish to understand how the pollutants are distributed and transported, with an eye toward better land management decisions.

News & Events

A team of students from the University of Hawai'i at Manoa School of Architecture were one of two student teams to win a national design competion. They were students of Dr. Steve Meder, UH architecture professor and director of the ...

Ongoing Projects

Campus Spatial Survey and Integrated Planning Light Pollution in Hawaiʻi Delamping Initiative Forest City Military Community Energy Efficiency Monitoring Kuykendall Hall Water Resources Working Group ...

Podcast #1: Waterworks

Dr. Peter Fuleky and Sisi Zhang are conducting an innovative study to identify the relationship between economic conditions in different sectors (tourism, health, agriculture, etc.) and the state’s limited water resources. Read more about their project here ...

Podcast #10: Metallic Phish

Dr. Megan Donahue and Eileen Nalley look for traces of land-based, metallic pollutants in tissues of commonly eaten reef fishes and the mechanisms involved in their transport from land to fishes. Read more about their project here ...

Podcast #3: Urban understandings and changing coasts

Meet Dr. Daniele Spirandelli and Theresa Dean and delve into the vulnerability of Hawaiʻi's wastewater infrastructure to a changing climate. Read more about their project here ...

Podcast #9: Mesophotic Mapping

Dr. Rob Toonen and Evan Barba explore sediment distribution across the sensitive ecosystems of the mesophotic zone and its connection to land use management decisions. Read more about their project here ...

Predicting and mapping Hawaiian mesophotic coral ecosystems for sustainable coastal development

PI: Robert Toonen
This study sought to address our fundamental lack of knowledge regarding vulnerable low-light, mesophotic coral ecosystems (at depths of 30-180 m) in order to better manage impacts from invasive species, coastal development, and exploration. By using statistical modeling, combined with machine learning, researchers created predictive maps to illustrate the distribution of mesophotic reefs and invasive algae across the main Hawaiian Islands. They found that all islands had some stretches of coastline identified as highly susceptible to invasion of the green alga Avrainvillea amadelpha, in both shallow and mesophotic depths.

Quality and Quanitity

Green Infrastructure for Stormwater Management Home Strategically placed Green Infrastructure (GI) Best Management Practices (BMP) can go a long way towards managing stormwater runoff from a water quality and flood mitigation perspective. As the development of urban and residential areas ...

Rainwater Catchment Project

What is Rainwater Catchment? Rainwater catchment is the capture of rainwater, most commonly in barrels or tanks, for household, landscape or commercial use. With proper design, maintenance and water treatment, a rainwater catchment system can provide water that is free ...

Resilience-Focused Disaster Reconstruction Planning

Hawai‘i’s coastal communities are particularly vulnerable to impacts from hurricanes, tsunamis, and other coastal disaster events due to the state’s isolated location in the Pacific and development concentrated along low-lying shores. Impacts from infrequent coastal disaster events will become more ...

Sea Level Rise and the Ala Wai Canal

In this episode, we head inland to take a look at how rising sea level will affect our infrastructure, aquifers, and fresh water supplies. Researchers from the Univerity of Hawaii Sea Grant College Program and the School of Ocean and ...

ThinkTech Hawaii: Hurricane Season Preparation

We can expect stronger and more numerous hurricanes due to climate change. How can Hawaii be prepared for the 2018 hurricane season?. In this episode of Research in Manoa guest Dr. Dennis J. Hwang, JD with the Hawaii Sea Grant ...

Tools and Resources

Green Infrastructure for Stormwater Management Home The Hawaiʻi LID Atlas is a collection of alternative stormwater management practices currently installed across the state. The Atlas is hosted by the National Nonpoint Education for Municipal Officials (NEMO) Network and the University ...

Tracking groundwater nutrients using novel tracers to inform coastal watershed management in South Kohala, Hawaiʻi

PI: Henrietta Dulai
Using a combination of nitrogen isotopes and microcontaminants as source tracers, this project aims to identify pathways of groundwater flow to the coastline along South Kohala, Hawaiʻi, tracing sources of groundwater contaminants and excess nutrients. Managers can use results to improve wastewater management and improve coral reef resilience.