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 41 for “"Water quality modeling"”.
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Water Quality Modeling in Kranji Catchment
… the process and results of applying the Soil and Water Assessment Tool (SWAT) to characterize bacterial fate and transport in the Kranji Catchment of Singapore. The goal of this process is to predict bacterial loading to Kranji Reservoir under the forcing of weather and other variables. Necessary …
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Dynamic water quality modeling using cellular automata
… The research presented here focused on a modeling approach, known as cellular automata (CA), which is characterized by a high degree of parallelism and is thus well suited to implementation on parallel processors. The inherent degree of parallelism also exhibited by the random-walk …
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Water Quality Modeling of a Storm Water Channel
… complex. This study was undertaken to assess the water quality of the canal in wet and dry weather conditions, and to develop a 2 "“ layer model to predict the response of the canal to storm water discharges. Samples were collected at specific locations and at five different depths during wet and …
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Water Quality Modeling of Freshwater Diversions in the Barataria Basin
A 1-D tidal, salinity and water quality model that analyzes the impacts of freshwater diversions with median and high flow on the water level, salinity and nutrient concentration of the Barataria Basin over a 2 period is presented here. The model predicts that the salinity of Lower Barataria …
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Water Quality Modeling of Freshwater Diversions in the Pontchartrain Estuary
A 1-D tidal, salinity and water quality model that analyzes the general effects freshwater diversions have on the water quality of the Pontchartrain Estuary over a 17-year period is presented here. Using the modeled live algae concentrations in conjunction with the algal bloom probability model …
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Agricultural non-point source (AGNPS) water quality modeling in a GIS environment
… undertake Agricultural Non-Point Source (AGNPS) water quality modeling. Three general areas of GIS technology were investigated consisting of technical issues involved in linking GIS; the model; database development; and a discussion of system performance from an institutional perspective.
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The study of biological interactions using water quality modeling : Massachusetts Military Reservation, Ashumet Pond
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.
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Water quality modeling for the Kennet and Avon Canal, a navigational canal in an inland catchment
… Canal in southern England is experiencing severe water quality problems caused by inorganic sediment and algae. These water quality problems are affecting the angling sport of fishermen downstream of the confluence of the canal with the River Kennet. The Environment Agency has been called upon to …
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Water quality modeling in the watershed-based approach for waste load allocation of the Des Moines River
<p>http://www.worldcat.org/oclc/37160943</p>
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Three dimensional water quality modeling in a shallow lake with complex morphometry; implications for coolwater fish habitat under changing climate
… complex lakes usually have a significant water quality heterogeneity and hydrodynamic gradients that require a three dimensional (3D) model to accurately capture their temporal and spatial dynamics. The objectives of this research were to evaluate and apply a 3D coupled hydrodynamic and …
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Hydrologic and water quality modeling with HSPF : utilization of data from a novel field data collection system and historical archives
Catchment-scale hydrology and water quality studies are empowered by current mobile computing, wireless, and Internet technologies to new levels of technical assessment capability. These technical developments motivate an investigation into the modem uses of hydrologic and water quality models. The …
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Response of farmers' decisions and stream water quality to price incentives for nitrogen reduction, carbon abatement, and miscanthus cultivation: predictions based on agent-based modeling coupled with water quality modeling
… the effects in turn of these decisions on water quality, namely stream nitrate load. Given that agriculture is the single largest source of nitrogen in surface waters and is a major contributor to hypoxia in coastal ecosystems and eutrophication in streams and lakes, this study is motivated …
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Water quality modelling for recreational use in the Kallang River Basin, Singapore
Singapore's Active, Beautiful, and Clean Waters Programme (ABC) aims to provide functional use of its water bodies to the public. The Kallang River Basin, being part of the ABC Programme, will be used for recreational purposes such as dragon boating and other water sports. In order to provide safe …
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Nonpoint source pollution modeling of an agricultural watershed within a geographic information system
… to be an important environment management and water quality management problem. For the most part, analysis of NPS pollution in watersheds has depended on the use of lumped mathematical models to identify potential problem areas and to assess the effectiveness of alternative management …
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Water Quality Aspects of an Intermittent Stream and Backwaters in an Urban North Texas Watershed
… City of Denton, Texas. Characterized as an urban watershed, the basin covers approximately 63.5 km2. Pecan Creek is an intermittent stream that receives nonpoint runoff from urban landuses, and the City of Denton's wastewater treatment plant, Pecan Creek Water Reclamation Plant, discharges …
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Estimating Uncertainty in HSPF based Water Quality Model: Application of Monte-Carlo Based Techniques
… a methodology for the uncertainty estimation in water quality modeling as related to TMDL development, four Monte Carlo (MC) based techniques—single-phase MC, two-phase MC, Generalized Likelihood Uncertainty Estimation (GLUE), and Markov Chain Monte Carlo (MCMC) —were applied to a Hydrological …
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Linking the effects of land use change with water quality and discharge: an integrated approach
Hydrologic and water-quality equilibria are greatly affected by changing land use. This study presents a methodology that integrates the use of remote sensing, geographical information systems (GIS) and water-quality modeling. Archived aerial photography proved to be a valuable source of historical …
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New applications of STEPL watershed modeling of CAFO feedlot runoff and implications of surface water impacts
… among other pollutants, by land use for a watershed. The Dry Creek Watershed Basin of Sioux County, Iowa, is delineated to capture runoff from large CAFO cattle feedlots. Feedlots are classified by digitizing land use data in ArcGIS, in order to estimate pollutant loads from each …
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A New Paradigm Of Modeling Watershed Water Quality
… predict sediment and chemical transport in watershed water systems enhance the ability of environmental scientists, engineers and decision makers to analyze the impact of contamination problems and to evaluate the efficacy of alternative remediation techniques and management strategies prior …
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