Groundwater is the primary water source on the island Tutuila in American Samoa, and accurate
quantification of groundwater availability is essential for well-informed management of this limited
resource. A water budget approach using SWB2, a soil water-balance model was applied to Tutuila
with the primary objective of calculating spatially and temporally distributed net-infiltration, which
directly controls groundwater recharge rate. Other water budget components such as
Groundwater is the primary water source on the island Tutuila in American Samoa, and accurate
quantification of groundwater availability is essential for well-informed management of this limited
resource. A water budget approach using SWB2, a soil water-balance model was applied to Tutuila
with the primary objective of calculating spatially and temporally distributed net-infiltration, which
directly controls groundwater recharge rate. Other water budget components such as
Quantifying hydrologic parameters such as precipitation, streamflow, evapotranspiration,
and aquifer response are fundamental to understanding a region’s hydrological budget, and
thus the availability of water resources. This is particularly important in small island
developing communities where critical water resources are limited. Climate and
streamflow measurements provide information on ground and surface water supply, while
measurement of aquifer parameters such as water level and salinity is imperative for
This report documents the UH monitoring network which provides hydrologic parameters, such as precipitation, streamflow, and aquifer response, in small island developing communities like Tutuila, American Samoa, where water resources are limited. It highlights the collaborative efforts between the University of Hawaii's Water Resources Research Center and the American Samoa Power Authority to establish a new monitoring network for weather, stream gauging, and aquifer data, providing essential information for sustainable water resource management and various applications
This report focuses on addressing the critical challenges of sustainable water resources management on Tutuila, the main island in the Territory of American Samoa. It presents an updated conceptual hydrogeological model of the island's groundwater and surface water resources by integrating existing hydrological information with recently acquired subsurface datasets, shedding light on the complex nature of Tutuila's hydrogeology, which varies significantly across different locations on the island.
This report focuses on addressing the critical challenges of sustainable water resources management on Tutuila, the main island in the Territory of American Samoa. It presents an updated conceptual hydrogeological model of the island's groundwater and surface water resources by integrating existing hydrological information with recently acquired subsurface datasets, shedding light on the complex nature of Tutuila's hydrogeology, which varies significantly across different locations on the island.
This report documents the UH monitoring network which provides hydrologic parameters, such as precipitation, stream flow, and aquifer response, in small island developing communities like Tutuila, American Samoa, where water resources are limited. It highlights the collaborative efforts between the University of Hawaii's Water Resources Research Center and the American Samoa Power Authority to establish a new monitoring network for weather, stream gauging, and aquifer data, providing essential information for sustainable water resource management and various applications
The Integrated Feasibility Report and Environmental Assessment (IFR/EA) is a study led by the Honolulu District of the Pacific Ocean Division of USACE, with the American Samoa Government as the non-Federal sponsor. It focuses on addressing flood risk in the Tafuna-Leone Plain of Tutuila Island, which is densely populated and vulnerable to frequent flooding due to heavy rainfall, shallow stream channels, and various development-related factors.
This report focuses on addressing the critical challenges of sustainable water resources management on Tutuila, the main island in the Territory of American Samoa. It presents an updated conceptual hydrogeological model of the island's groundwater and surface water resources by integrating existing hydrological information with recently acquired subsurface datasets, shedding light on the complex nature of Tutuila's hydrogeology, which varies significantly across different locations on the island.
Pacific Island Developing Countries (PIDCs) contribute a minuscule 0.03 percent to global carbon dioxide emissions, with residents producing only a quarter of the world's average emissions per person. However, despite their minimal emissions, these nations are expected to face some of the earliest and harshest consequences of climate change, with a particular focus on its impact on freshwater resources. This chapter delves into the potential threats posed by climate change to the already stressed freshwater supplies in PIDCs.
The U.S. Geological Survey (USGS) has developed regression equations for estimating flood-peak discharges, essential for designing infrastructure and managing flood plains. This Fact Sheet focuses on the application of the updated National Flood-Frequency (NFF) Program to rural areas on the island of Tutuila, American Samoa, while noting that new equations have been developed for various regions across the United States.
Ground-water and rainfall data from Tutuila and Aunuu in American Samoa, spanning October 1987 to September 1997, reveal trends in pumpage, chloride concentrations, and water levels. Noteworthy findings include varied pumpage rates and chloride concentrations, with Aua experiencing record-high chloride levels, while water levels in certain areas remained consistent or declined during the 12-month period ending September 1997.
This booklet describes the U.S. Army Corps of Engineers' role in water resources development and the Pacific Ocean Division and Honolulu Engineer District have been assissting the Government of American Samoa in the management and development of the territory's water resources. The "urbanization" of American Samoa and the accompanying desires for modern conveniences have placed heavy demands on the territory's fragile infrastructure, including its vital resource.
This report details a wide variety of beach aspects in American Samoa. That includes flood control, beach erosion, and environmental protection.
This study of the baseline water quality in American Samoa covered the effects of wet and dry seasons and a variety of tide and weather conditions on water quality and exchange characteristics of several water classifications. Current measurements in the Tafuna area show a reversing tide related longshore current with net transport towards to the southwest.
This report has been prepared by the U.S. Fish and Wildlife Service for inclusion in the U.S. Army Corps of Engineers American Samoa Water Resources study, and will contribute to the development of a comprehensive plan