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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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,
Read More
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
Read More
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
Read More
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
Read More
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,
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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
Read More
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).
Read More
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
Read More
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
Read More
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
Read More
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.
Read More
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
Read More