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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 “"rating curves"”.
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Predicting suspended sediment in Illinois rivers using dimensionless rating curves
… by creating dimensionless suspended sediment rating curves. Suspended sediment concentration (SSC) data, collected by the Illinois State Water Survey monitoring program, and discharge data, collected by the U.S. Geological Survey (USGS), from ten sites across the state of Illinois are used in …
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Developing rating curves in a small Iowa watershed to evaluate nutrient loading in streams
1 PDF file (xi, 83 pages)
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Ecohydrologic Indicators of Low-flow Habitat Availability in Eleven Virginia Rivers
… primary outputs of IFIM studies are: 1) habitat rating curves that relate habitat availability to streamflow for every species, lifestage, or recreational use modelled; and 2) habitat time series under alternative water management scenarios. We compiled 428 habitat rating curves from previous …
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A virtual flow meter to develop velocity-index ratings and evaluate the effect of flow disturbances on these ratings
… typically estimated with the use of empirical rating curves. The conventional rating method relates stage to discharge, however at sites prone to flow reversals, changes in stream bed roughness, backwater, and tidal effects, a stage-discharge rating is not unique and a velocity-index rating is …
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Impact of rainfall events on suspended sediment load and water quality and links to sediment management in Dzindi River Catchment
… rainfall magnitude was determined using sediment rating curves. Water quality and sedimentation status at each cross-section together with the information from the GIS map aided in identifying and recommending the best sediment management strategies for different sites in the study area. pH values …
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Investigation of the application of open channel flow concepts in support of wetland reservoir routing
… is quite difficult and for precise measurement, rating curves must be developed. Velocity of flow in open channels can be calculated by several empirical equations, such as Manning's Equation. By defining the storage capacity of a reservoir, or river, routing was performed while the outflow rate …
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Erosion and nutrient loading characteristics of two small agricultural watersheds in Piedmont Virginia
… from log-log linear least squares regression rating curves. Seasonal and annual totals of loading rates were computed by summing the yields for all storms. Existing estimation techniques were used to calculate rainfall energy, rainfall energy contributing to rainfall, the runoff/rainfall …
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A Data Fusion Framework for Floodplain Analysis using GIS and Remotely Sensed Data
… Q3 data; flood data which included flood peaks, rating curves, and flood profiles; and DEM and remote sensing imagery.) Automatic feature extraction was determined to be an important component for successful flood analysis. A process network, in conjunction with domain specific information, was …
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ANALYSIS, OPTIMIZATION, AND PRACTICAL DESIGN OF A SPLIT-PHASE DICKSON SWITCHED CAPACITOR CONVERTER FOR HIGH CURRENT APPLICATIONS
… factoring in the problem of ceramic capacitor de-rating, the flying capacitors of the split-phase Dickson SCC were designed by referring to capacitor de-rating curves supplied by component suppliers. However, potential inaccuracies in the curves, combined with typical manufacturing tolerances of …
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Rapid flood damage prediction in short lead-time scenarios
… are useful in developing stage-discharge rating curves and possibly as a standalone means of estimating inundation grids. The second and third studies in this research look to investigate a framework for rapid flood damage assessment using public domain cadastral or parcel geospatial data. …
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Development of a SWMM-GIS Flood Model for New Orleans Drainage Pumping Station No 4 Basin
… into a Damage model to estimate damage rating curves for the study area. The 1:100 year damage was estimated to be 17.2 million of dollars (2005 US dollars). The average annual flood damage was estimated to be 5.5 million of dollars (2005 US dollars). The developed Annual Flood Maps can …
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The geomorphological behaviour of a snow-fed, semi-arid gully system in western Colorado
… data. Linking these simulations to sediment rating curves allows event sediment yields for watershed sites to be estimated. The procedure shows snowmelt to be overwhelmingly effective in transporting sediment out of the basin, but that in the headwaters summer storm erosion is locally more …
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Sedimentological and Biological Analyses on Hobble Creek Prior to Restoration
… predictive models were used to create sediment rating curves for flows typically found in Hobble Creek: the Meyer-Peter, Muller equation (MPM), Wilcock's two parameter model, Rosgen's Pagosa reference curve, and Bathurst's Phase 2 equation. Each were used and compared to data obtained on Hobble …
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Objectively identifying spatial variability in bankfull stage
The bankfull flow concept has occupied a prominent role in geomorphological theory about process dynamics in alluvial meandering river systems for decades. As the flow that defines the transition between channel and floodplain and marks the level of incipient flooding, bankfull flow represents an …
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Auxiliary Procedures for the AGNPS Model in Urban Fringe Watersheds
… phosphorus, and suspended sediment. Individual rating curves were developed to separately transform loads and concentrations of each pollutant into sub-index values. The maximum sub-index from each parameter was added together and averaged for the index. The index was calculated at the watershed …
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Long-term evolution of highly regulated basins and water management policies to support their ecosystem services
… and numerical simulations, updating the aging rating curves of the existing hydraulic infrastructures. Drawing on the Garda-Mincio system, we inspected the evolution of the freshwater regimes within the European perialpine lakes framework, discussing the outcomes to describe which common …
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Analysis of sediment dynamics in intensively managed landscapes
… cattle grazing plays an important role in accelerating floodplain and streambank erosion. The relationships between rainfall, discharge, and suspended sediment concentration are examined by sediment rating curve approach and hysteresis analysis. Sediment rating curves developed for three sites …
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Spectral fingerprinting
… sediment concentration measurements using rating curves and Quantile Regression Forests. Results of sediment flux monitoring were interpreted individually with respect to storage behaviour, compared to fingerprinting source ascriptions and combined with fingerprinting to assess their joint …
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Measurement and modelling of water and sediment fluxes in meso-scale dryland catchments
… presents a comparison of traditional sediment rating curves (SRCs), generalized linear models (GLMs) and non-parametric regression using Random Forests (RF) and Quantile Regression Forests (QRF). The observed SSCs are highly variable and range over six orders of magnitude. For these data, …