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 35 for “"Water quality improvement"”.
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Development of a Reservoir Embayment Characterization Process to Prioritize Water Quality Improvement.
<p>To simplify water quality improvement in reservoirs, it has been suggested that efforts should be focused on smaller and more manageable units such as reservoir embayment areas. Embayments are prime locations to locate marinas, parks, beaches, and residential homes. Current data and information …
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Regulating farm nutrient runoff : Maryland's experience with the Water Quality Improvement Act
… of Agriculture's implementation of the Water Quality Improvement Act. I find the department has continued to adhere to a voluntary approach to nutrient management. As a result, farmer practices are largely unchanged and the efficacy of a mandatory approach remains untested.
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Watershed Management Networks, Watershed Plans, and Water Quality Improvement in Urbanizing Counties in North Carolina.
North Carolina State University Theses Forestry.;North Carolina State University Theses Natural Resources.
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Analysis of the Watershed Resources Registry using GIS to evaluate stormwater restoration practices in the Christina River Watershed
The Watershed Resources Registry is a new interactive online mapping tool, created by federal, state, and local partners. The tool prioritizes areas for preservation and restoration practices in different landscapes across an entire state by using a variety of absolute and relative criteria to rank …
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Integrating virtual world with choice experiment method: case of residential stormwater management measures
… and goodness of fit were tested. I found a minor improvement for the high social presence condition, which was not statistically significant. Third, the impact of social presence on self-reported measures was examined. The two sub-samples were not significantly different in terms of self-reported …
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Willingness to Pay for Alternative Programs to Improve Water Quality in the Chesapeake Bay
… that people are willing to pay for improved water quality in the Chesapeake Bay. For policymakers, the key challenge is to determine how to allocate scarce funds across alternative regulatory and subsidy programs. This thesis investigates three new research questions that relate to the …
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Removal of Wastewater Nitrogen and Phosphorus by an Oligohaline Marsh
Wetlands potentially contribute to water quality improvement. The objective of this thesis was to determine the role of wastewater processing by oligohaline Council Creek marsh (0.16 km2), which receives wastewater from Easton, MD. Tidal flushing, nutrient distributions, plant uptake, and sediment …
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Spring Studies and A Decision-Making Process to Guide Groundwater Contamination Prevention in an Agricultural Karst Basin
Groundwater contamination is a potential major health and environmental issue in karst aquifers because of rapid surface water to groundwater connections and conduit-dominated flow that may allow contaminants to move great distances from their source in a very short amount of time. Agricultural …
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Nature based solutions for coastal defense: Wave attenuation and economic analysis of marsh-fronted seawalls
… additional ecosystem services, such as habitat, water quality improvement, and carbon sequestration. Both the one-dimensional wave model and benefit-cost analysis framework were applied to an urban marsh-fronted seawall case study at Juniper Cove, Salem, Massachusetts. The presence of vegetation …
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Applying the RUSLE and SEDD Equations to an Agricultural Watershed in Southwest Virginia - A Case Study in Sediment Yield Estimation Using GIS
… of Southwest Virginia, the 1,194 acre duck pond watershed consists primarily of agricultural, forested, and low density urban land uses. The Revised Universal Soil Loss Equation (RUSLE) and the Sediment Distributed Delivery (SEDD) prediction models were used to determine the quantity of eroded …
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The effect of carbon addition, pH and Fe concentration of microbial sulfate reduction and the subsequent precipitation of Fe and Mn from acid mine drainage in wetland mesocosms
… dissolved sulfate. An 18 month field study of water quality improvement and sulfate-reducing bacterial (SRB) populations revealed that the wetland was effectively treating the AMD. Iron and Mn both met compliance standards set by the EPA requiring an instream Fe concentration of 3 mg/L and an …
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Identifying, Monitoring, Quantifying and Converting Algae to Bio-Fuels in Bio-Reactors
… fossil fuels. Dried algae harvested from a pilot water quality improvement technology at the Rockaway Wastewater Treatment Facility in New York were examined as a source of carbohydrates and lipids for the production of bio-fuels in bio-reactors. The length of storage time, storage conditions, …
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Littoral wetlands and lake inflow dynamics
Wetlands are increasingly recognized as important water treatment systems, which efficiently remove nutrients, suspended sediments, metals and anthropogenic chemicals through sediment settling and various chemical and biological processes. This thesis tackles three interconnected aspects of wetland …
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HERBIVORY IMPACTS ON GROWTH AND SURVIVAL OF SEEDLINGS IN BOTTOMLAND HARDWOOD FOREST RESTORATION SITES IN THE POST OAK SAVANNAH AND BLACKLAND PRAIRIE ECOREGIONS OF TEXAS, USA
… over the past 40 years. These communities aid in water quality improvement, streambank stabilization, and urban expansion mitigation. They also provide important habitat for many species of wildlife. Since the majority of remaining BLHW are degraded due to land fragmentation, restoration attempts …
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The effectiveness of certain sustainable urban drainage systems in controlling flooding and pollution from urban runoff
… with the integration of hydrological and water quality studies together with modeling. Monitoring data and information were analysed on both a site-by-site basis and as a comparison between sites.<br/><br/>Hydrological and water quality data were collected at each site. Key hydraulic …
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RESPONSES OF RECENT BENTHIC FORAMINIFERA TO METAL POLLUTION IN SOUTH WEST ENGLAND ESTUARIES: A STUDY OF IMPACT AND CHANGE
… Cornwall in January 1992 of metalled acidic mine water drainage from the recently closed Wheal Jane tin mine. Shortly after this discharge a post-impact study using the responses of Recent benthic foraminifera as indicators of metal pollution was carried out on this Creek which had not been …
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Driving tour of the Upper Wakarusa Watershed
… understanding, appreciation and protection of watersheds by individuals living within the urban-to-rural lands interface. The purpose of the study is to provide guidance to developing and implementing a driving tour of environmentally sensitive land around Clinton Lake and the Upper Wakarusa …
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Assessing Efforts To Reduce Sediment Impacts In Cottonwood Creek, Blackfoot Basin, Montana
… evaluated trade-offs in stream crossing improvements regarding short-term sediment impacts versus long-term reductions in sediment load from road surface erosion and possible culvert failures. Suspended sediment and turbidity measurements were taken during spring snowmelt the year before …
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