RESEARCH: ENVIRONMENTAL ASSESSMENT & PROTECTION

Assessing Sustainability of Groundwater Resources Under Future Climate Change Conditions

SPONSOR:
National Oceanic and Atmospheric Administration (NOAA) through the East-West Center (EWC)

PROJECT PERIOD:
9/1/2012 – 8/31/2013

ABSTRACT:

Ground water is the primary source of municipal water on most developed islands in the Pacific, and yet the reliability of water supplies on all
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Integrated Management of Multiple Aquifers in the Face of Climate Change Research

SPONSOR:
WRRIP 2008

PROJECT PERIOD:
03/01/08 – 02/28/09

ABSTRACT:

We proposed an intertemporal and spatial optimization model to derive an efficient pricing scheme for the integrated water system of Southern Oahu. Welfare gains from this scheme were analyzed and compared to those associated
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Integrated Management of Multiple Aquifers in the Face of Climate Change Research

SPONSOR:
WRRIP 2008

PROJECT PERIOD:
3/1/2005 – 2/28/2006

ABSTRACT:
We provided a general model of groundwater optimization over space and time, allowing for growing demand and a backstop resource. The model was used to compare resource allocation and welfare under efficient groundwater management
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Identifying Groundwater Flow and Contamination to Streams: Kahaluu Watershed, Oahu

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2015 – 2/28/2017

ABSTRACT:
The surface waters in the Kahaluu Lagoon on the windward side of Oahu fronted by Kaneohe Bay have been shown to have very high levels of
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Assessing Feasibility of Storm-Water Harvesting by Groundwater Injection in Nuuanu Reservoir No. 4, Oahu, Hawaii

SPONSOR:
Honolulu Board of Water Supply

PROJECT PERIOD:
07/20/2015-07/08/2017

ABSTRACT:
Surface water harvesting is a conservation method used to augment groundwater supply. The method is a form of Aquifer Storage and Recovery (ASR), which involves capturing excess water during wet periods and injecting
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Numerical Simulation of Cold Intermediate Depth Seawater Circulation Through the Keauhou Aquifer in North Kona, Hawaii

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2015 – 2/28/2016

ABSTRACT:
Recent drilling log and depth profile data acquired from boreholes drilled through the basal lens in the northern Keauhou aquifer suggest that cold, intermediate depth seawater
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Geochemical Delineation of Aquifer Boundaries and Assessment of Groundwater Quality on Tutuila Island, American Samoa

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
07/20/2015-07/08/2017

ABSTRACT:

Deteriorating water quality and resulting water shortage is an ongoing threat to the sustainability of domestic water supplies on Tutuila, the main island in the territory of
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Tracing Interconnectivity Between High-level and Basal Groundwaters in West Hawaii

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2014 – 2/28/2016

ABSTRACT:
Recent rapid development in the North Kona District of West Hawaii has raised concerns regarding the sustainability of the region’s groundwater resources in the face of
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Quantifying Groundwater Discharge from the Faga’alu Aquifer, American Samoa

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
03/01/2014-02/28/2015

ABSTRACT:

Faga’alu Valley on Tutuila Island, American Samoa, has been designated as a priority watershed management area by the NOAA Coral Reef Conservation Program. While Faga’alu’s surface water
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Estimating Evapotranspiration Over Native Wet Montane Cloud Forests in Hawaii and Evaluating the Impact of Climate Change on it

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
03/01/2014-02/29/2015

ABSTRACT:

Sensible and latent heat fluxes are the key variables in energy and water vapor exchange between the land surface and the atmosphere. Latent heat flux is the
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Assessment of Groundwater Availablity in the Volcanic-Rock Aquifers of Oahu, Hawaii

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2014 – 2/28/2016

ABSTRACT:
The volcanic-rock aquifers of Oahu supply freshwater to 70 percent of Hawaii’s population and most of other needs, including commerce, industry, and U.S. military. The resident
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Assessment of Hydraulic Properties through Tidal Ground-level Analysis for the State of Hawaii

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
03/01/2013-02/28/2014

ABSTRACT:
The Hawaii aquifers supply water to 1.36 million residents, diverse industries, and a large segment of the U.S. military in the Pacific. With the increase of residential population
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Assessing Ground Water Sustainability of the Island of Tutuila, American Samoa

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2013 – 2/28/2014

ABSTRACT:
Anthropogenic and natural sources of contaminants on the island of Tutuila, American Samoa, represent a serious threat to groundwater, surface-water, coastal waters, and coral reefs. Major
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Evaluation of the Impact of Drought Conditions upon the Waiahole Ditch System Development Tunnels: Ground Water Sustainability Implications under Adverse Climate Change Conditions

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2013 – 2/28/2014

ABSTRACT:
Reductions in the base-flow discharges of the high-level development tunnels of the Waiahole Ditch System are believed to be associated with regional recharge distribution shortfalls to
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Determination of Groundwater Fluxes and Evaluation of Water-Level Data to Characterize Effectiveness of Low- Permeability Valley-Fill Deposits in the Pearl Harbor Aquifer Area

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
9/1/2012 – 10/31/2013

ABSTRACT:
This study was aimed at assessing the effects of stream valleys that are filled with alluvium below the water table that act as hydrologic barriers to
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Optimal Groundwater Extraction and Water Recycling

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2009 – 2/28/2011

ABSTRACT:

Water scarcity has long been an important issue in many regions around the world and the threat of climate change has recently brought it further to the forefront of
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Modeling to Support Monitoring Waiver for Selected Wells in Hawaii

SPONSOR:
Hawaii Department of Health, USEPA

PROJECT PERIOD:
03/14/11 – 09/30/12

ABSTRACT:
Quarterly monitoring of source water from drinking water wells in Hawaii has been going on for decades. However, many of these wells show no evidence of contamination. For a contaminant to appear in a well,
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Assessment of Hydraulic Properties through Tidal Ground-level Analysis for the State of Hawaii

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
03/01/2013-02/28/2014

ABSTRACT:
The Hawaii aquifers supply water to 1.36 million residents, diverse industries, and a large segment of the U.S. military in the Pacific. With the increase of residential population on the islands, drinking
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Numerical Simulation of the Effects of Borehole Flow on Measured Vertical Salinity Profiles from Deep Monitor Wells, Pearl Harbor Aquifer, Oahu, Hawaii

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
8/01/2009 – 7/31/2010

ABSTRACT:
A recent numerical-modeling study of coastal wells in Israel indicated an upward displacement of the borehole salinity in wells located in the coastal-discharge area of the aquifer while it is
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Optimal Groundwater Extraction and Water Recycling

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2009 – 2/28/2011

ABSTRACT:
Water scarcity has long been an important issue in many regions around the world and the threat of climate change has recently brought it further to the forefront of policy
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Assessing Effects of Intraborehole Flow in Deep Monitoring Wells on Estimates of Aquifer Salinity Profiles

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program
USGS

PROJECT PERIOD:
9/01/07 – 12/31/08

ABSTRACT:
There is a heavy reliance on salinity-versus-depth profiles from deep monitor wells for the regulation ground-water withdrawals in some locations in Hawaii. Because of possible intraborehole flow effects, however,
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Estimating Hydraulic Properties for Volcanic Island Aquifers Using Wave Setup

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
03/01/07 – 02/28/08

ABSTRACT:
The objective of this study was to investigate the influence of swells and wave setup on low-frequency water-table variations in a coastal aquifer and to utilize wave setup in hydraulic
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Measurement of Phytoremediation and Biodegradation of RDX, HMX DNT and Related Energetic Compounds in the Tropical Environment

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
Environet

ABSTRACT:
This research was a collaboration involving personnel and other resources from Environment Inc., the US Army, and the Hawaii Agricultural Research Center (HARC) that was utilized in experiments that were conducted at
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Groundwater Modeling Services for Risk Assessment Red Hill Fuel Storage Facilities, NAVFAC Pacific, Oahu, Hawaii

SPONSOR:
TEC Incorporated

PROJECT PERIOD:
01/01/06 – 02/28/07

ABSTRACT:
The US Navy’s bulk fuel storage facility at Red Hill is located in the ridge between south Halawa Valley and Moanalua Valley on the island of Oahu. The facility was constructed in the early 1940’s and consists of
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Hydrologic Analysis of Hawaii Watersheds for Flood Control and Water Quality Management

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2006 – 8/31/2008

ABSTRACT:
The establishment of the rainfall-runoff relationship of a watershed is an important and difficult problem in applied hydrology. The rainfall-runoff relationships of Hawai‘i watersheds are even more difficult to establish
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Integrated Management of Multiple Aquifers with Subsurface Flows and Inter-District Water Transport

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2006 – 2/28/2007

ABSTRACT:
The problem of groundwater management has been studied widely in the literature. However, all of the previous studies limited their attention to the single aquifer case. In many places, water
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RAM2 Modeling and the Determination of Sustainable Yields of Hawaii Basal Aquifers

SPONSOR:
Hawaii Commission on Water Resources Management (CWRM)

PROJECT PERIOD:
2006 – 2008

ABSTRACT:
Basal aquifers, in which freshwater floats on top of saltwater, are the major freshwater supply for the Hawaiian Islands, as well as many other coastal regions around the world. Under unexploited or natural
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Development of a New Technique for the Use of Dissolved Helium as an Environmental Groundwater Tracer

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2005 – 2/28/2006

ABSTRACT:
Tracer tests are an important method for determining the flow characteristics and patterns of subsurface water (such as groundwater aquifers) and surface water bodies (such as streams and the ocean).
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Analytical Groundwater Flow and Transport Modeling for the Estimation of Sustainable Yield of Pearl Harbor Aquifer

SPONSOR:
Hawaii Commission on Water Resources Management (CWRM)

PROJECT PERIOD:
05/01/04 – 12/31/05

ABSTRACT:
Basal aquifers, in which freshwater floats on top of saltwater, are the major freshwater supply for the Hawaiian Islands, as well as many other coastal regions around the world. Under unexploited or natural
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Estimating Hydraulic Properties for Volcanic Aquifers Using Aquifer Tests and Tidal Responses

SPONSOR:
USGS Pacific Islands Water Science Center

PROJECT PERIOD:
7/2004 – 12/2005

ABSTRACT:
Most published solutions for aquifer responses to ocean tides focus on the one-sided attenuation of the signal as it propagates inland. However, island aquifers experience periodic forcing from the entire coast, which can lead
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Hawaii Source Water Assessment and Protection Program Update and Maintenance

SPONSOR:
Hawaii Department of Health, Safe Drinking Water Branch

PROJECT PERIOD:
04/23/04 – 06/28/05

ABSTRACT:
A WRRC team headed by Dr. Aly El-Kadi has recently completed the task of conducting an assessment of the State’s 450-odd drinking water sources for the State Department of Health (DOH). The
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Evaluation of Infiltration to Groundwater Waialua, Hawaii

SPONSOR:
U. S. Army Garrison-Hawaii

PROJECT PERIOD:
09/01/00 – 03/31/01

ABSTRACT:
The Schofield Army Barracks Wastewater Treatment Plant (SBWWTP) treats wastewater from the following facilities in central Oahu, Hawaii: U.S. Army’s Schofield Barracks Military Reservation, Wheeler Army Air Field, Camp Stover Housing Area, Helemano Military Reservation, U.S.
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Stream Pesticide and Nutrient Loads from Baseflow, Surface Runoff and Sediment Contributions on Tutuila Island, American Samoa

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

ABSTRACT:
The goal of the project was to determine the contribution of baseflow, surface runoff, and sediments to pollutant fluxes in Faga’alu watershed in Tutuila, American Samoa. The work utilized a watershed model (SWAT) and a
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