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 132 for “"stream flow"”.
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Development of Design Guidelines for In-Stream Flow Control Structures
The use of in-stream flow control structures for channel stabilization has become increasingly popular due to its potential cost-effectiveness and ecological benefits. These structures help to protect the bank from erosion and lateral migration. However, a large number of these projects fail due to …
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A Study of Stream Flow Trends in Glacier National Park, Montana
No abstract prepared.
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A Dam Conundrum: The Role of Impoundments in Stream Flow Alteration
… Due to limited data regarding their size and flow, it has been difficult to assess how these smaller impoundments impact rivers. This study combined rainfall runoff data from the Chesapeake Bay Model with the unique routing framework of VA Hydro to create a simplistic hydrologic model capable …
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Local and global numerical analysis of a porous screen in free-stream flow
A porous screen in a free-stream flow poses a model system for the analysis of nets, as used in fishing and aquaculture. In such applications, the forces on the net inform operational design and safety choices, whereas the flow past the net relates to the mixing of flow and nutrients in the wake. …
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Identifying Sources of Fecal Pollution in Water as Function of Sampling Frequency Under Low and High Stream Flow Conditions
… as a function of sampling frequency with stream samples from Mill Creek, Montgomery County, VA. Samples were collected monthly for one year, plus weekly for four consecutive weeks during seasonal high flows (March), and seasonal low flows (September-October), plus daily for seven …
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DIRECT AND INDIRECT MODIFICATION OF STREAM FLOW IN THE FLATHEAD RIVER BASIN IN NORTHWESTERN MONTANA: HYDROLOGIC PARAMETER DEVELOPMENT AND IMPLEMENTATION
… it in the spring. This snowmelt-dominated streamflow is used by agriculture, municipalities and water-reliant ecosystems. Chapter 1 considered the response of unmodified snowmelt-dominated streamflow to climate change in the Flathead River basin in northwestern Montana from 1940 to 2006. A …
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DIRECT AND INDIRECT MODIFICATION OF STREAM FLOW IN THE FLATHEAD RIVER BASIN IN NORTHWESTERN MONTANA: HYDROLOGIC PARAMETER DEVELOPMENT AND IMPLEMENTATION
… it in the spring. This snowmelt-dominated streamflow is used by agriculture, municipalities and water-reliant ecosystems. Chapter 1 considered the response of unmodified snowmelt-dominated streamflow to climate change in the Flathead River basin in northwestern Montana from 1940 to 2006. A …
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Turbulent interactions between stream flow and near-subsurface flow: a laboratory approach using particle image velocimetry and refractive index matching
Turbulent flow over a rough, porous gravel bed (particle diameter, D = 1.27 cm) is investigated in the laboratory using particle image velocimetry (PIV) and refractive index matching (RIM). This combination allows for detailed examination of flow fields both in the near-bed region and within the …
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Analyzing the Boeing 777 link the flow process for value stream flow reduction against the Lean Aerospace Initiative's enterprise level roadmap
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics; and, (S.M.)--Massachusetts Institute of Technology, Sloan School of Management, 2001.
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The sedimentology of coarse grained hyperconcentrated flow deposits within modern and ancient volcaniclastic and alluvial fan sequences
… A. in 1984, triggered the formation of a debris flow in the headwaters of the North Fork Toutle River. As the debris flow progressed downstream it transformed through the incorporation of water and the loss of sediment and within 34 kilometres became a muddy flood. The deposits produced by the …
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Geospatial and statistical foundations for streamflow synthesis in West Virginia
Streamflow values must be synthesized for locations where flow measurement stations, in applications such as the West Virginia SWAP program, are lacking or where only intermittent measurements are available (West Virginia Department of Health and Human Resources, 1999). This research describes an …
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The development and application of analytical techniques for planning of irrigation systems
… of Canterbury, the stochastic component of stream flow under different climatic regimes are investigated. Water demand is then compared with available water supply on a daily basis to establish the potential of irrigation by direct diversion of stream flow.
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Control of salinity intrusion caused by sea level rise
… barriers, tidal locks, and through long term stream flow augmentation are investigated for their suitability. Quantification of the extent of the impacts is accomplished by means of computer model simulations. A laterally integrated two-dimensional. time dependent. finite difference numerical …
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Relationships Between Landscape, Spatial Scale, and Stream Water Chemistry in a Subtropical Karst System
… three spatial scales (sub-catchment, riparian, stream reach) and related to water chemistry variables collected over a 13-month sampling period. An additional dataset was incorporated into analysis to evaluate seasonal and long-term (1984-2008) temporal trends across contrasting stream flow …
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Ecohydrology effects of an invasive grass (Phalaris arundinacea) on semi-arid riparian zones
… that may alter hydrology, including changes to stream flow. Compared to the woody species they often replace, dense grass stands may have higher rates of growth (productivity) and water loss through leaves (transpiration), yet may access shallower water sources and thus reduce stream flow. In …
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Understanding Streamflow Change at the Scale of a Major City: Chicago
… climate change have made the non-stationarity of stream flow records an emerging phenomenon in hydrology. This thesis studies the systematic shifts in stream flow that have been observed in urban, suburban and agricultural watersheds in and around the Greater Chicago area. A novel statistical …
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Flow interference between groups of three and four equispaced cylinders
… three and four cylinders when situated in a free stream flow. The spacing of the cylinders was such that the lines joining their axes formed an equilateral triangle, and a square respectively. The study is split into two parts, (a) potential flow over the groups of cylinders (b) real flow over the …
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A Comparative Study of Stream-Gaging Methods Employed in Nonpoint Source Pollution Studies in Small Streams
The U.S. Geological Survey started measuring stream flow in 1888 as part of a public land irrigation study. The demand for accurate stream flow measurement has increased with the rising concern about nonpoint source (NPS) pollution. NPS pollution studies, such as TMDL development, often involve …
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