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 463 for “"Recharge"”.
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Recharge dynamics of a perched phreatic aquifer
Numerous techniques were used to analyze recharge rates, timing, and mechanisms for a perched, phreatic aquifer. Recharge rates were estimated using fluid mass balance (FMB), integrated hydrograph separation (IHS), and innovative hydrograph manipulation techniques. Timing and mechanisms of recharge …
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Estimating groundwater recharge in Jinci karst groundwater system, North China
More than 25% of the world’s population relies on karst groundwater as the primary source for drinking and irrigation. However, due to the global climate change as well as population expansion, the contradictory between supply and demand of water resource becomes more and more pronounced. Karst …
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Modeling Artificial Groundwater Recharge in the Santa Rosa Creek Watershed
… of the aquifer through artificial groundwater recharge. One of these projects includes the use of a recharge basin. This study was conducted to understand the impacts of that recharge basin on the groundwater surrounding it as well as to evaluate the site’s potential for other recharge methods. …
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Evaluating Preferential Recharge in Blue Ridge Aquifer Systems Using Saline Tracers
… the role of geologic structure on groundwater recharge at the Fractured Rock Research Site in Floyd County, Virginia. Tracer migration was monitored through soil, saprolite, and fractured crystalline bedrock for a period of 3 months with chemical, physical, and geophysical techniques. Potassium …
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Artificial Recharge of Groundwater with Recycled Municipal Wastewater in the Pajaro Valley
… and rapid seawater intrusion. Artificial recharge of recycled water into groundwater aquifers in other locations has proven to be an effective method of mitigating groundwater depletion and seawater intrusion while providing a sustainable water supply. Two methods of artificial recharge …
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Hydrogeology and recharge of the Split Rock Creek Aquifer, southeastern South Dakota
… was conducted to determine the mechanism of recharge to the aquifer. </p><p> A four-fold plan was earned out to gather the necessary data. . This plan involved determining the general hydrostratigraphy of the study area by reviewing available data and by drilling test holes where data were …
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Spatial and temporal estimation of pumping and recharge in groundwater system analysis
… of the Chicot aquifer are pumping rates and recharge. The use of GIS-based methods for calculating these properties provide spatially-specific results, allow flexibility for incorporating various processes and input parameters, and are independent of groundwater model resolution. In the …
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Groundwater quantity and quality assessment for aquifer recharge in Ohangwena region, Namibia
… the suitability of using runoff for aquifer recharge to augment groundwater in the Ohangwena region and minimize the lowering of water table. The Geographical Information System (GIS) and groundwater flow models were used in this study to assess the water resources in the study area. A …
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Investigating recharge rates in Table Mountain springs using oxygen and hydrogen isotopes
… of local rainfall, estimates are made of their recharge rate. The oxygen, hydrogen, and EC data for Main spring, De Waal spring, Albion spring, and Newlands springs for the years 2013 to 2016 are presented. The oxygen and hydrogen isotope composition of monthly rainfall collected nearby at the …
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Artificial recharge for conjunctive use in irrigation : the San Joaquin Valley, California
… of water to an aquifer requires an artificial recharge method. It is deduced that for irrigation purposes, a direct surface recharge is the most appropriate method to use because of its low cost of construction, operation and maintenance. To store water for agriculture, the capacity to recharge …
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Institutional innovation in water management : the case of Mexico City's recharge wells
… the difference in adoption patterns of water recharge well technology in Mexico City both by local entities and the central city government. The research finds that this technology, originally designed by the central city with the stated purpose of aiding aquifer recharge, was adopted by local …
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Density and recharge effects during the Cape Cod natural-gradient tracer test
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2001.
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Probabilistic estimation and prediction of groundwater recharge in a semi-arid environment
Quantifying and characterizing groundwater recharge are critical for water resources management. Unfortunately, low recharge rates are difficult to resolve in dry environments, where groundwater is often most important. Motivated by such concerns, this thesis presents a new probabilistic approach …
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Groundwater Modeling of Managed Aquifer Recharge at the Regional and Local Scale
… Sanitation District is heading a Managed Aquifer Recharge project designed to build water resiliency for the district as well as meet recent regulations concerning effluent released into the Chesapeake Bay. The Sustainable Water Initiative for Tomorrow (SWIFT) project will include five injection …
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A Comparison of Four Methods to Estimate Groundwater Recharge for Northeastern South Dakota
<p>The rate of groundwater recharge is one of the most important elements in the analysis and management of groundwater resources. In addition, it is also the most difficult quantity to determine. This thesis, which is the result of a study made in northeastern South Dakota, presents an overview of …
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Evaluation of an Ecohydrologic-Process Model Approach to Estimating Annual Mountain-Block Recharge
… Approach to Estimating Annual Mountain-Block Recharge Chairperson: Dr. William Woessner Regional subsurface mountain-block recharge (MBR) is viewed as a key component of basin aquifer systems found in semi-arid environments. Yet water resource managers do not have a commonly available and …
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Evaluation of an Ecohydrologic-Process Model Approach to Estimating Annual Mountain-Block Recharge
… Approach to Estimating Annual Mountain-Block Recharge Chairperson: Dr. William Woessner Regional subsurface mountain-block recharge (MBR) is viewed as a key component of basin aquifer systems found in semi-arid environments. Yet water resource managers do not have a commonly available and …
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Impacts of trace metal pollution, urbanization and aquifer recharge on Spokane River macroinvertebrates
… macroinvertebrate tissue, 2) effects of aquifer recharge, and 3) impact of urbanization. I predicted that aquifer inflows of cold, clean water would mitigate effects of pollution, and that reaches above the City of Spokane would be less negatively affected by urbanization; both were unsupported. …
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Enhanced removal of emerging contaminants during managed aquifer recharge using optimized operating conditions
… treatment systems are essential. Managed aquifer recharge (MAR), including riverbank filtration (RBF) and artificial recharge and recovery (ARR), offers an effective and promising means for providing safe drinking water. However, in order to reduce the physical footprint of these installations, an …
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