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 19 of 19 for “"urban catchments"”.
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IMPACTS OF URBAN DEVELOPMENT PATTERN ON RUNOFF PEAK FLOWS AND STREAMFLOW FLASHINESS OF PERI-URBAN CATCHMENTS: ASSESSING THE PERFORMANCE OF PHYSICAL AND DATA-DRIVEN MODELS FOR REAL-TIME ENSEMBLE FLOOD FORECASTING
<p>Urban growth is a global phenomenon, and the associated impacts on hydrology from land development are expected to increase, especially in peri-urban catchments, which are newly developing catchments in proximity of growing cities. In northern climates, hydrologic response of peri-urban …
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Improved understanding and prediction of the hydrologic response of highly urbanized catchments through development of the Illinois urban hydrologic model (IUHM)
What happens to the rain in highly urbanized catchments? That is the question that urban hydrologists must ask themselves when trying to integrate the hydrologic and hydraulic processes that affect the hydrologic response of urban catchments. The Illinois Urban Hydrologic Model (IUHM) has been …
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The measurement and reduction of urban litter entering stormwater drainage systems
… for litter management in South African urban catchments.
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Testing the use of the BASINS PLOAD model to simulate the quality of stormwater runoff from the Kuils River catchment, Cape Town
… between land use and water quality in urban catchments is closely linked. As pollutants accumulate on land surfaces they are carried in runoff. This has led to increasing concerns that stormwater is responsible for adversely affecting the quality of freshwater resources. Total …
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Quantification of climate change impacts on urban catchment hydrology and water sensitive design devices
Urban catchments and waterways play a vital role in the development of cities. However, climate change is projected to adversely affect the urban catchment hydrology. Thus, future projections of climatic variables are needed at high temporal and spatial resolutions for stormwater impact assessment …
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Development of Effective Procedures for Stormwater Thermal Pollution Potential Risk Mapping
… occurring from heated stormwater runoff in urban catchments is a growing concern among municipalities in the United States. The U.S. Environmental Protection Agency (EPA) maintains regulatory criteria for temperature of waters of the U.S. as many species of aquatic life depend on an …
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Modelling of urban stormwater drainage systems using ILSAX
… last few decades, the world has witnessed rapid urbanisation. One of the many complex problems resulting from increased urbanisation is related to management of stormwater from developed areas. If stormwater is not managed properly, it may lead to flooding of urban areas, and deterioration of …
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An analysis of discharge and water quality of an urban river and implications for stormwater harvesting
Development in urban catchments often result in rivers being converted into large stormwater canals where stormwater is removed as quickly as possible to prevent flooding. A combination of elevated peak flows, increased nutrients and contaminants and reduced biotic richness are typical features of …
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The large scale understanding of natural organic matter : processes and application
… pollution and climate change. Further, land disturbance has led to considerable losses of nutrients from terrestrial ecosystems. This investigation aims to explore and address several barriers to understanding natural organic matter cycling across terrestrial and aquatic ecosystems. Soil organic …
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The controls of watershed nutrient export
… N export and N retention change with increased urbanization, and (2) how river networks modify N that is loaded to them.</p><p>Urbanization is a major perturbation of the land surface. Chapter 1 uses a budget approach to assess how N retention changes with increased urbanization in small …
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The performance of a field scale biofiltration cells in reducing nutrient rich surface runoff from an informal settlement in South Africa
… by the effects of rapid and unplanned urbanisation in South African urban catchments as the number of informal settlements next to watercourses increase. Residents living in nonsewered informal settlements typically discard their household greywater, solid waste and blackwater into …
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Analysing stormwater temperature at site-specific discharge points along the Liesbeek River, South Africa
Increased urban development has resulted in increased impervious landcover and the removal of natural vegetation. The continued anthropic modification of the Earth's surface towards an urban state, has had profound effects on the surrounding natural systems (Thompson et al., 2008). Consequently, …
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Sustainable management of water resources through Real Time Control with University of Cape Town dam as a case study
… stormwater flows to downstream locations of urban catchments. To determine pathways to enhance these benefits, application of Real-Time Control (RTC) system to operate a dam outlet could potentially be used to store stormwater. To investigate the economic viability of harvesting stormwater …
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Resilience of Water Sensitive Design Assets in Urban Environments Against Flooding and Climate Change
Urban sprawl has led to the conversion of previously natural, pervious land into impervious surfaces. Consequently, this increase in impervious areas has elevated the risk of urban flooding. Water Sensitive Design (WSD) assets are engineered green infrastructure implemented in new urban …
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Impacts of Stormwater Management Practices and Climate Change on Flow Regime and Channel Stability
Urbanization increases runoff during storm events due to a reduction in vegetation and an increase in impervious surfaces, which limits the land's capacity to absorb and slow down water. This increase in runoff contributes to channel erosion. While extensive research exists on the hydrologic …
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Exploring the response of urban storm sewer system to the implementation of green roofs
… BMP implementation on the hydrologic response of urban watersheds has become a hot topic. Green roofs, which have been reported as an effective means of reducing urban storm water runoff, have been widely used in Europe and are gaining increasing attention in the US. This thesis presents a method …
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Parameter estimation of urban drainage models
Urbanisation is one of the key factors that contributes to urban flooding, which has caused major destruction to the environment and the human race. In particular, the increase in population and building density influence the change in hydrological characteristics in urban areas. Conversion of …
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The effect of rainstorm movement on urban drainage network runoff hydrographs
… network efficiency. Mass balance analysis in an urban watershed indicates that rainfall infiltrated to pervious areas might contribute to direct runoff hydrograph, thereby offering an explanation for the long hydrograph tail. Width functions are obtained from urban drainage networks and applied …
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Geospatial Analysis to Site Urban Agriculture
The rapid expansion of urban systems in both area and population represents the most significant landuse/landcover change occurring in the world today. Urbanization is often accompanied by increasing environmental degradation. This degradation is related to stormwater runoff, air temperatures …