Global river sediment dynamics are dramatically being altered by humans in various ways, such as dam-building, deforestation, mining, and climate change. This is having major impacts on the environment and society, as sediment is vitally interconnected with water, food, energy, …
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The study of the interaction between rocks and residing fluids is an important field of research in hydrology, geomechanics, and energy resources. Geomechanical systems undergo deformation due to gravitational loading and plate tectonic activities. Deformation could also occur d…
Groundwater monitoring at regional scales using conventional methods is challenging because of the need for regular measurements and due to high measurement error associated with existing instruments. With advances in sensor technology and wireless communication, automated groun…
Little is known regarding the origins and hydrology of hundreds of small lakes located in the western Uzbekistan province of Khorezm. Located in the Aral Sea Basin, Khorezm is a productive agricultural region, growing cotton, wheat, and rice. Irrigation is provided through an ex…
Extreme precipitation models are crucial for understanding the characteristics of extreme weather, ensuring the risk of extreme events, and designing flood protection structures. Analytical relationships that link the risk of extreme precipitation with a specific duration at a g…
The Coachella Valley is a large, alluviated and gently sloping valley of about 820 square miles in the Palm Springs-Indio California area. The Coachella Valley Aquifer is beset by long term drawdown in water levels. While recharge of imported Colorado River water has helped main…
Water is the most essential resource for the sustenance of life. Water is also necessary for agriculture, industry, household, and environmental conservation. However, due to large population growth and industrial expansion, access to clean water is becoming increasingly difficu…
The studies within this dissertation use a suite of long-term flux-tower, remotely sensed, and spatially distributed data to more accurately assess the withdrawal of subsurface plant-accessible water storage during multi-year dry periods, more accurately represent measurements o…
Precipitation is a crucial input variable for hydrological and climate studies. Rain gauges can provide reliable precipitation measurements at a point of observations. However, the uncertainty of rain measurements increases when a rain gauge network is sparse. Satellite-based pr…
Chronic exposure to naturally occurring arsenic (As) in groundwater threatens the health of >150 million villagers in S/SE Asia. In Bangladesh, low As aquifers offer the best hope of reducing the exposure of 35-40 million remain exposed to elevated levels of As in drinking water…
Topography, vegetation, nutrient dynamics, soil features and hydroclimatic forcing are inherently coupled, with feedbacks occurring over a wide range of temporal and spatial scales. Vegetation growth may be limited by soil moisture, nutrient or solar radiation availability, and …
Piping materials such as pipes and rubber gaskets are an integral component of water and wastewater conveyance system. They may be subject to contamination exposure during their service life especially when located in the areas with contaminated soil and/or groundwater. Dependin…
With climatic change, many western states in the United States are experiencing drought conditions. Numerous irrigation districts are losing significant amount of water from their canal systems due to leakage. Every year, on the average 2 million acres of prime cropland in the U…
High rates of soil loss and high sediment loads in rivers necessitate efficient monitoring and quantification methodologies so that effective land management strategies can be designed. Constructing a sediment budget is a useful approach to address these issues. Quantifying a se…
The importance of groundwater cannot be over emphasized. This natural resource has sustained human life and support economic development for years. Nearly 2 billion people worldwide depend on groundwater for their daily need. It is estimated that by the year 2025 around 5 billio…
Recent data has estimated annual flood loss at over 2.3 billion of dollars in damage a year globally, a figure likely to increase as populations grow, people move to flood prone areas, and flooding dynamics change. Digital Elevation Models (DEMs) are a primary input into many fl…
The main objective of this research was to develop and utilize a coupled surface water groundwater model to simulate hydrological responses of watersheds. This was achieved by coupling the U.S. Geological Survey (USGS) groundwater flow model, MODFLOW, and the rainfall runoff mod…
A field, laboratory, and modeling study of As in groundwater discharging to Waquoit Bay, MA, shed light on coupled control of chemistry and hydrology on reactive transport of As in a coastal aquifer. Precipitation of Fe(III) oxides, along with oxidation and adsorption of As occu…
The Indonesian Throughflow (ITF) is the only low latitude connector between the Pacific and Indian Oceans affecting upper ocean stratification and regional climate. Here we focus on the Indian Ocean side of this connection, first identifying changes within the primary throughflo…