Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 38 for “"surface water/groundwater"”.
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Evaluating surface water–groundwater interactions in floodplains using SWAT+ and gwflow
… and ecologic services. Within floodplains, surface water-groundwater exchange plays an important role in facilitating biogeochemical processing and can have a strong influence on hydrology through infiltration or discharge of water. These functions can be difficult to assess due to the …
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Coupled Surface Water-Groundwater Model to Analyze Sustainability of the Atascadero Subbasin
… separated sub-region of the Paso Robles Groundwater Basin. Three local cities operate approximately 40 wells to pump the Subbasin for their entire water supply needs. Past studies have questioned sustainability of the Subbasin as the combined pumping rate by the three cities is nearing …
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Surface-water groundwater interaction and arsenic mobilization in south and southeast Asia
Contamination of groundwater with geogenic arsenic is widespread throughout much of South and Southeast Asia and poses a serious health risk to the millions of individuals who consume this water. It is widely agreed that the dominant mechanism of arsenic mobilization is reductive dissolution of …
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Surface water-- groundwater interaction : the spatial organization of hydrologic processes over complex terrain
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2000.
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Characterization of Pre and Post Re-Naturalized Surface Water/Groundwater Exchange, Jocko River, Flathead Indian Reservation, Montana
… Characterization of Pre and Post Re-Naturalized Surface Water/Groundwater Exchange, Jocko River, Flathead Indian Reservation, Montana. Chair: Dr. William Woessner Construction of flood protection levees in the 1950’s resulted in channel incision of 2200 ft of the Jocko River. Resulting floodplain …
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Characterization of Pre and Post Re-Naturalized Surface Water/Groundwater Exchange, Jocko River, Flathead Indian Reservation, Montana
… Characterization of Pre and Post Re-Naturalized Surface Water/Groundwater Exchange, Jocko River, Flathead Indian Reservation, Montana. Chair: Dr. William Woessner Construction of flood protection levees in the 1950’s resulted in channel incision of 2200 ft of the Jocko River. Resulting floodplain …
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SURFACE WATER – GROUNDWATER INTERACTIONS IN A PROGLACIAL ALPINE CATCHMENT: Applications of Heat Tracing, Modeling, and Remote Sensing Methods
… change occurs, the availability and stability of water resources will be a global concern. The availability of reliable water resources will be of particular concern to regions that currently depend on meltwater from snowpack or glaciers during dry periods. One place whose water stability could be …
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Preferential and Non-Darcy Flows in the Hyporheic Zone: Surface Water-Groundwater Hydraulics and Effects on Stream Functions
Surface water-groundwater interaction can provide various stream functions including temperature regulation, nutrient cycling, pollutant attenuation, and habitat creation. However previous literature is divided on the extent and conditions of these benefits. This dissertation has explored the …
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Mathematical Modeling of the Movement of Heat, Water, and Solutes in Two-Dimensional, Saturated-Unsaturated, Surface Water - Groundwater Flow Systems
… of pollutants during infiltration of polluted surface water to groundwater. A two-dimensional, cross-sectional, saturated-unsaturated, finite difference model for simulating the movement of water, heat, and solutes in surface water-groundwater flow systems was developed. The model has been …
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Comparing Reach Scale Hyporheic Exchange and Denitrification Induced by Instream Restoration Structures and Natural Streambed Morphology
A common water quality issue is an excess of nutrients which can lead to problems such as eutrophication. Stream restoration is one method by which improvements in water quality may be attempted. One strategy is increasing hyporheic zone flow at baseflow by addition of instream structures. The …
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Assessing surface and groundwater interactions between the middle Brazos River Alluvium Aquifer and the Brazos River.
… Alluvium Aquifer (BRAA) is a vital source of water in Central Texas, primarily used for irrigation. The BRAA and the overlying Brazos River are connected; however, their interaction is not well understood and often overgeneralized. This study seeks to clarify aspects of surface water …
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Numerical modeling of groundwater-driven stream network evolution in low-relief areas
… significant channel growth only occurs when water is collected and flows as concentrated discharge in specific areas. Previous work examined how surface water routing out of closed depressions on the landscape could produce concentrated discharge to drive channel incision. We propose that …
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Water flow and heat transport modelling at the interface between river and aquifer
The functioning of the surface water-groundwater interface as buffer, filter and reactive zone is important for water quality, ecological health and resilience of streams and riparian ecosystems. Solute and heat exchange across this interface is driven by the advection of water. Characterizing the …
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Effects of Experimental Scale on the Adsorption of Two Pharmaceutical Drugs Detected in Municipal Wastewater Effluent
… year and are poorly treated by conventional wastewater treatment processes, leading to increasing detection of such compounds in surface water, groundwater, and municipal drinking water. Soil aquifer treatment (SAT) is a promising method for treating these emerging compounds through combined …
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Reliability analysis of green roofs under different storm scenarios
… has created issues with localized flooding and water quality due to changes in runoff caused by increasing impervious area. Green infrastructure offers an alternative method of runoff reduction, by using natural processes to infiltrate, store, and treat runoff at its source. In particular, green …
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Evaluation of the degradation of per- and polyfluoroalkyl substances (PFAS) using UV-activated silica-based granular media (UV/SGM)
… and liquid sources. PFAS have been detected in surface water, groundwater, drinking water, wastewaster, landfill leachate, soils, sediments, and sludge, along with other impacted medium. The Environmental Protection Agency (EPA) has begun developing analytical standards, advisories, and …
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Dissolved Organic Matter Sources from Soil Horizons with Varying Hydrology and Distance from Wetland Edge
… in wetland soils may be released into water, generating DOM. DOM is mobile and reactive, making it influential to aquatic metabolism and water quality. To understand the role of different soil horizons as potential sources of DOM, extractable soil organic matter (ESOM) was measured in …
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Groundwater/surface water interaction in the Raisin River watershed, near Cornwall, Ontario.
… 1994 and 1995 to understand the interaction of groundwater and surface water in the Raisin River watershed, near Cornwall, Ontario. The Raisin River lies within an agricultural region which relies heavily on groundwater use. The regional groundwater supply is predominantly from a limestone …
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An integrated modeling and decision tool for improved drinking water reliability in rural villages of India
… India, faces an everyday struggle to meet basic water requirements. The challenges in this struggle are numerous: lack of infrastructure, limited access to new water resources, over-dependence on groundwater resources, and high spatial and temporal variability of monsoon. In addition, these …
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