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Articles 1 - 5 of 5
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Using Stream Restoration To Mitigate Stormwater Runoff In An Urban Watershed: A Case Study, Jonathan M. Brantley
Using Stream Restoration To Mitigate Stormwater Runoff In An Urban Watershed: A Case Study, Jonathan M. Brantley
Theses and Dissertations--Biosystems and Agricultural Engineering
The goal of this case study was to evaluate the effectiveness a 275 m regenerative stream restoration design to mitigate stormwater runoff in a highly urbanized watershed. The restoration resulted in a wide, wetland-like floodplain, comprised of a rock base that was overtopped with a filtration media (approximately 30% woodchips and 70% topsoil). The creation of the floodplain-wetland complex in tandem with filtration media lead to increased storage capacity and an increase in hyporheic exchange within the system. Significant reductions were found for the storm hydrograph parameters volume, peak discharge, and time to peak. Reductions in baseflows were also noted …
Quantifying The Source And Pathway Of Dissolved Reactive Phosphate In Karst Drainage Of The Inner-Bluegrass, Cory Radcliff
Quantifying The Source And Pathway Of Dissolved Reactive Phosphate In Karst Drainage Of The Inner-Bluegrass, Cory Radcliff
Theses and Dissertations--Biosystems and Agricultural Engineering
In the Midwestern U.S. seasonal hypoxia experienced in the Gulf of Mexico and harmful algal blooms in inland freshwater ponds, lakes, and rivers are partly fueled by dissolved orthophosphate loadings from disturbed landscapes. Efforts to reduce dissolved reactive phosphate (DRP) loadings have had varying levels of success and have led to insufficient water quality improvements. Inefficiencies in conservation strategies can stem from poor understanding of phosphate source and flow pathway dynamics. This study focused on monitoring sources and flow pathways of dissolved reactive P in a karst agroecosystem with phosphatic limestone. We collected event water samples at the Camden Creek …
Impact Of Preferential Flow, Source Water Connectivity, And Agricultural Management Practices On Sediment And Particulate Phosphorus Dynamics In Midwestern Tile-Drained Landscapes, Saeid Nazari
Theses and Dissertations--Biosystems and Agricultural Engineering
Tile drainage is recognized as a significant transporter of sediment and particulate phosphorus (PP) in the Midwestern U.S., leading to proliferation of Harmful Algal Blooms (HABs). Numerous studies have focused on Dissolved Reactive Phosphorus (DRP) and Nitrogen (N) flux dynamics in tile-drained landscapes; however, the impact of preferential flow and agricultural management practices on fate and transport of sediment and PP has remained poorly understood. The overarching objective of this study was to improve understanding of sediment P delivery in tile-drained landscapes. This dissertation focuses on four studies. In the first study, forms and flow pathway dynamics of total phosphorus …
High Resolution Sensing Of Nitrate Dynamics In A Mixed-Use Appalachian Watershed: Quantifying Nitrate Fate And Transport As Influenced By A Backwater Riparian Wetland, Alexandria Kosoma Jensen
High Resolution Sensing Of Nitrate Dynamics In A Mixed-Use Appalachian Watershed: Quantifying Nitrate Fate And Transport As Influenced By A Backwater Riparian Wetland, Alexandria Kosoma Jensen
Theses and Dissertations--Biosystems and Agricultural Engineering
As harmful algal blooms begin to appear in unexpected places such as rivers in predominantly forested systems, a better understanding of the nutrient processes within these contributing watersheds is necessary. However, these systems remain understudied. Utilization of high-resolution water quality data applied to deterministic numerical modeling has shown that a 0.42% watershed area backwater riparian wetland along the Ohio River floodplain can attenuate 18.1% of nitrate discharged from local mixed-use watersheds and improves in performance during high loading times due to coinciding increased hydrological connectivity and residence times of water in these wetlands. Loading from the Fourpole Creek watershed was …
Hydrologic Characterization Of A Rain Garden Mitigating Stormwater Runoff From A Commercial Area, John T. Mcmaine
Hydrologic Characterization Of A Rain Garden Mitigating Stormwater Runoff From A Commercial Area, John T. Mcmaine
Theses and Dissertations--Biosystems and Agricultural Engineering
Impervious surfaces such as roads, sidewalks, and roofs increase the volume of runoff generated in a watershed. Traditional stormwater management techniques emphasize conveyance of runoff away from impervious surfaces in order to reduce flooding. Rain gardens are becoming popular as a different means to manage stormwater in such a way that runoff is captured and infiltrated onsite rather than conveyed offsite. A stormwater management system consisting of a rainwater harvest system, rain garden, and infiltration chamber was built at the Coca-Cola Refreshments USA, Inc. distribution center in Lexington, Kentucky during the fall of 2011. Precipitation, inflow, and water level were …