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 18 of 18 for “"groundwater hydrology"”.
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Surface Water and Groundwater Hydrology of Borrow-Pit Wetlands and Surrounding Areas of the Lewisville Lake Environmental Learning Area, Lewisville, Texas
… study was to characterize the surface water and groundwater hydrology of borrow-pit wetlands located within the borders of the Lewisville Lake Environmental Learning Area (LLELA), east of the Elm Fork of the Trinity River. The wetlands were excavated into alluvial deposits downstream of the …
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Characterizing Wetland Hydrology, Chemistry, And Soils For An Endemic Crayfish, The Piedmont Blue Burrower
… habitat characteristics of burrowing crayfish, groundwater hydrology, water chemistry, and soil properties were assessed to determine their importance for the state-listed endangered, primary burrower <em>Cambarns harti</em>. Groundwater hydrology and chemistry were monitored from shallow wells …
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Paleolimnology and paleoecology of the Coal Valley region, Lincoln County, Nevada
… experienced more direct control by regional groundwater hydrology than by climate. The revised paleohydrologic index of Coal Valley is (Z{dollar}\sb{\rm cv}{dollar} = 0.11, compared to the previous value of 0.07, suggesting that the water balance of Coal Lake was higher than previously …
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Assessing recharge and discharge across the prairie pothole landscape: application of spatial hydrological data and statistical analysis in a groundwater flow model
… the spatial and temporal dynamics between groundwater recharge, discharge, and wetlands is a necessary step to develop effective water management strategies. Wetlands in the northern Great Plains play a role in flood control, water supply, and regional ecology. The water budget of a wetland …
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Comparison of hydrological and groundwater design methods
… in this thesis is to provide a handbook on groundwater hydrology for the practical engineer. A handbook should be a useful and dependable servant to its owner and user. In order to fill this role, handbooks in different fields must differ in accordance with the degree of complexity of the …
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An Investigation of Groundwater Flow in the Vicinity of Patoka Dam, Indiana
… rivers. In such karst regions, subsurface hydrology can play an integral role in the condition, operation, and safety of dams and should be considered during risk assessment. Patoka Dam, near Jasper, Indiana, is situated on a well-developed karst landscape/aquifer system, faces significant …
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Drainage Timescale Estimates and Storage Change Analysis on A Basin Scale
The groundwater travel time depicts the characteristic timescale of the catchment drainage process and is therefore also known as drainage timescale (K). Catchment drainage timescale can be estimated empirically from recession flow analysis as well as from hydraulic theory. Applicability of is …
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Numerical studies of flow in porous media using an unstructured approach
… many areas of engineering and science including groundwater hydrology and the recovery of oil and gas. Porous materials are characterized by the unique shape and connectivity of the internal void structures which give rise to a large range in macroscopic transport properties. Historically an …
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A Three-dimensional Model of Poroviscous Aquifer Deformation
A mathematical model is developed for quantification of aquifer deformation due to ground-water withdrawal and, with some modifications, is potentially applicable to petroleum reservoirs. A porous medium saturated with water is conceptually treated in the model as a nonlinearly viscous fluid …
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GROUNDWATER WITHDRAWAL ESTIMATION USING INTEGRATED REMOTE SENSING PRODUCTS AND MACHINE LEARNING
… various critical components affecting the globe. Groundwater, which comprises the world's 30% freshwater, is one such key component of the global water resources and supplies nearly half of the global drinking water.</p> <p>Despite groundwater overdraft in many parts of the world, including the …
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Machine Learning methods for providing groundwater management insights in semi-arid alluvial aquifers
Accurate regional groundwater level (GWL) forecasting is critical for evaluating the impacts of groundwater withdrawals on water resource sustainability, especially during droughts. A lack of hydrogeological data often makes it challenging to develop water balance models that forecast the impacts …
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Groundwater and Tidal Controls on Wetland Hydrology, Julie J. Metz Wetland Mitigation Bank, Woodbridge, Virginia
… Pod 3 were used to generate hydrographs, create groundwater flow maps, calculate hydraulic conductivity (K<sub>sat</sub>) by performing slug tests, and calibrate wetland water budget models using Wetbud software. Wetbud-generated water budgets using both Basic and Advanced scenarios calculated …
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Developing groundwater and surface water interaction methods for complex hydrological systems
… of the connection between surface water and groundwater systems still remains a challenge for groundwater and surface water models. In this doctoral study, two types of complex and integrated problems are identified as knowledge gaps in coupled surface and subsurface flow studies (i) …
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Global and regional assessments of unsustainable groundwater use in irrigated agriculture
<p>Groundwater is an essential input to agriculture world-wide, but it is clear that current rates of groundwater use are unsustainable in the long term. This dissertation assesses both current use of groundwater for country- to global-scale agriculture, and looks at the future of groundwater. The …
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Estimating Evapotranspiration of a Riparian Forest Using Sap Flow Measurements
… corridors, it is necessary to understand groundwater usage by dominant phreatophytic vegetation, particularly when the primary source of water for irrigation comes from groundwater abstraction. We report here results of estimated evapotranspiration (ET) of a riparian forest, which were …
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Stochastic modelling of contaminant transport in porous media
The stochastic model of solute transport describes the motion of fluid elements in a porous medium as stochastic variation of the fluid velocity, produced by pore wall impacts. This gives a stochastic differential equation for fluid displacements, and solute transport is obtained as the cumulative …