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Showing 1 to 20 of 162 for “"Floodplains"”.
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Evaluating surface water–groundwater interactions in floodplains using SWAT+ and gwflow
Floodplains are essential ecosystems that provide a variety of economic, hydrologic, and ecologic services. Within floodplains, surface water-groundwater exchange plays an important role in facilitating biogeochemical processing and can have a strong influence on hydrology through infiltration or …
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Risk Assessment of Post-Fire Floods on Dams and Their Floodplains
The rapidly changing global climate and the increased dependence on infrastructure networks make our society vulnerable to natural disasters. Decision makers need to understand the intensity of potential natural disasters to take necessary actions to minimize their impacts. In Southwest United …
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Complementary Effects of In-Stream Structures and Inset Floodplains on Solute Retention
… storage zones such as hyporheic zones and floodplains is typically necessary for significant reaction to occur. �Yet the effects of two common restoration techniques, in stream structures and inset floodplains, on solute retention have not been rigorously compared. �We used MIKE SHE to …
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Floodplains and the Proximate Principle: A Case for Floodplain Linear Parks in Roanoke, Virginia
The intention of this paper is to argue a position for the use of floodplain linear parks as a means of urban flood mitigation. Current approaches often focus on protecting existing and future structures via the use of costly-engineered solutions such as dams and floodwalls. My argument is that the …
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An integrated framework for hydrology-hydrodynamic modelling of the Barotse floodplains, upper Zambezi river basin.
… and hydrodynamic processes for the Barotse floodplains is ever increasing especially with the advent of climate change/variability. Despite several studies in the Upper Zambezi Basin, there was an absence of an integrated online (internal) framework for coupling hydrology and hydrodynamic …
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An integrated framework for hydrology-hydrodynamic modelling of the Barotse floodplains, upper Zambezi river basin.
… and hydrodynamic processes for the Barotse floodplains is ever increasing especially with the advent of climate change/variability. Despite several studies in the Upper Zambezi Basin, there was an absence of an integrated online (internal) framework for coupling hydrology and hydrodynamic …
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Battle for the Floodplains: An Institutional Analysis of Water Management and Spatial Planning in England
… opportunities for the restoration of functional floodplains to alleviate the impact of flooding on urban development. For centuries, rural and urban landowning interests have dominated floodplains and water management in England, through a ‘hegemonic discourse alliance’ on land use development …
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Cross-Scale Drivers of the Reciprocal Impacts Among Freshwater Mussels, Hydrology, and Floodplains on River Biogeochemistry
Rivers integrate physical, chemical, and biological processes that occur within the watershed. To characterize the functional role of animal species in shaping biogeochemical cycles and resource patterns, therefore, it is necessary to account for variation in watershed features and hydrologic …
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Sedimentary Characteristics and Nutrient Sequestration of Embanked Floodplains Along the Lower Mississippi River, Mississippi and Louisiana
… concentrations. Results of this study show that floodplains are served as a sink for removing nutrients from further downstream movement effectively. Further study should be completed to understand the temporal changes in nutrient sequestration of the study area in order to quantify the amount of …
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The role of floodplains on the propagation of land management signals in the Vale of York
The floodplains of many UK rivers are heavily managed to reduce the risk of flooding. The presence of levées is thought to increase peak flows, decreasing the ability of the floodplains to attenuate flood waters. Understanding the role of floodplains for reducing flood risk is vital in order to …
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Quantifying the Impact of Remapping Floodplains on Residential Property Values in Snohomish County, Washington: A Hedonic Approach
<p>Flood events are the most common and costly natural disasters. The Federal Emergency Management Agency (FEMA) quantifies flood risks in the form of Flood Insurance Rate Maps (FIRMS). These FIRMS delineate flood risks and are used to set flood insurance premiums. Changes in land use, the …
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Feeding ecology of the African tigerfish Hydrocynus vittatus castelnau, 1861 in the floodplains of the Kavango river, Namibia
… Hydrocynus vittatus was investigated in the floodplains of the Kavango River, Namibia. A total of 275 samples of tigerfish were caught, using a seine and an experimental multifilament gillnet, during the annual flooding period between February and May 2020. The result of the study shows a …
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Human and environmental influences on the distribution and abundance of arapaima in river floodplains of the Lower Amazon
… abundance of arapaima (Arapaima spp.) in river floodplains of the lower Amazon River, near the municipality of Santarém, Para State, Brazil. In chapter 1, a study of eight environmental variables in 13 dry season floodplain lakes demonstrates that lake depth, relative depth, conductivity, and …
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Exploring Overbank Sediment Deposition Variation in Heavily Modified Floodplains of the Lower Mississippi River: A Sedimentological and Geophysical Analysis
… to the channel profile and surrounding floodplains through dams, dikes, revetments, dredging, and channel cutoffs. Although these changes have improved navigation and reduced flood risk, unanticipated changes to the major flood return period, individual flood severity and duration, and …
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Changes in water chemistry and fluvial geomorphology from arsenic contaminated floodplains of Whitewood Creek and Belle Fourche River, South Dakota
… arsenic bearing minerals, is deposited along the floodplains of Whitewood Creek and the Belle Fourche River as overbank deposits and abandoned meander and channel fill. The introduction of mine tailings into these streams has impacted them chemically and geomorphologically for over 100 years. This …
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Developing a methodology for archaeological prospection on alluvial floodplains with a case study involving the Winckley Lowes barrow sequence, Lancashire.
… archaeological prospection on dynamic alluvial floodplains. A combination of LiDAR, gradiometry, field-walking and topographic surveying are employed on floodplains on the confluence of the Rivers Ribble, Hodder and Calder near Clitheroe, Lancashire. This was chosen as a case study due to the …
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River-Floodplain Connectivity and Sediment Transport Potential: Applications to Sediment Dynamics on Floodplains and Juvenile Freshwater Mussel Settling in Rivers
… energy, and organisms between rivers and their floodplains. Recent advancement of high-resolution lidar data and numerical modeling is helpful to explore river-floodplain connectivity precisely to improve our predictions of sediment transport and deposition on floodplains. In the present work, …
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Sedimentary Dynamics and Water Quality in Floodplains of the Lower Mississippi River near Natchez, Mississippi, during the 2018 and 2019 Floods
<p>The Lower Mississippi River (LMR) near Natchez, Mississippi, experienced intervals of major flooding during the 2018 and 2019 water years. While federal agencies sample sediment and water quality in the main LMR channel, little is known about sedimentary dynamics, water quality, and nutrient …
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The Regeneration Niche in Bottomland Hardwood Forests: Tree and Herbaceous Communities Along Interacting Gradients of Flood and Light in East Texas Floodplains
<p>The research contained in this document characterizes environmental niches of bottomland hardwood (BLH) plant species, focusing on how gradients in light availability and flooding shape understory composition and exploring a potential trade-off between shade and flood tolerance. Field surveys …
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Modelling of simple prismatic channels with varying roughness using the SKM and a study of flows in smooth non-prismatic channels with skewed floodplains
… of flow in compound channels with skewed floodplains. In this thesis, the Shiono and Knight Method (SKM) is applied to homogeneously and heterogeneously roughened channels. The SKM is shown to be capable of accurately predicting the lateral distributions of depth-averaged velocity and …
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