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 14 of 14 for “"HEC-RAS Model"”.
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Modeling the Effects of Sea-Level Rise on Flooding in the Lower Ozama River Basin, Santo Domingo, Dominican Republic
… approaches. This study develops a multi-model framework to evaluate the impacts of SLR and compound fluvial and tidal interactions on flooding in the lower Ozama River Basin, Santo Domingo. A one-dimensional (1D) HEC-RAS model was reconstructed from Belliard (2020) with newly incorporated …
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Minimizing the detrimental effects of hydro-peaking on riverbank instability: The lower Osage River case
… to outflow events by using the integrated BSTEM model incorporated into the HEC-RAS model. The 1-D sediment transport and unsteady flow in the HEC-RAS model were accurately calibrated and validated using the USGS data. An optimization technique using the modified interval algorithm was applied to …
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UNDERSTANDING THE FLOW DYNAMICS OF THE PEARL RIVER, MS, THROUGH HYDRODYNAMIC MODELING
… bifurcation of the Pearl. This study aims to model the Lower Pearl River to understand the flow dynamics in the major branches, and to determine the final outflow distribution into the Mississippi Sound, aiming to improve river forcing for ocean models studying estuarine dynamics of the …
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Sediment Transport Analyses and Development of a Hydraulic Computer Model for Desiging a Stable Vegetated Channel at Lost Lake
… samples; 4) developing a hydraulic computer model of the watershed using the US Army Corps of Engineers Hydrologic Engineering Center River Analysis System (HEC-RAS) software; and 5) the evaluation of various channel configurations and erosion control strategies that could be implemented to …
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Watershed Scale Impacts of Floodplain Restoration on Nitrate Removal and the Practical Applications of Modeling Cumulative Floodplain Restoration Hydraulics
… and monthly recurrence intervals). We used HEC-RAS hydraulics results from a prior study together with a nitrate removal model coded in R. Results indicated that watershed nitrate removal varied depending on the location of restoration in the watershed and where removal was evaluated. The …
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Riverine flooding using GIS and remote sensing
… Systems (GIS), and hydraulic and/or hydrological modeling, to develop informed flood mapping for flood risk management. The application of Hydrological Engineering Center River Analysis System (HEC RAS) and HEC HMS models, developed by the USA Hydrologic Engineering Center of the Army Corps of …
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Low-head hydropower as a reserve power source for wind power
… Illinois, USA) was estimated using a HEC-RAS model calibrated with U.S. Geological Survey data. The output of the model was then analyzed to determine the capacity of the system and gauge its reliability both as a standalone generator and as a component in a coupled wind-hydropower …
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JEMEZ RIVER CASE STUDY: UTILIZING A FROUDE NUMBER SIMILITUDE PHYSICAL MODEL, 1-D MOBILE BED NUMERICAL MODEL, AND A 2-D FIXED BED NUMERICAL MODEL FOR WEIR DESIGN INSIGHT
Physical and numerical models have been widely used to describe flooding patterns and to gain further understanding of river hydraulics around complex structures. Located on the Jemez River in New Mexico, the Jemez Weir stops the upstream progression of stream degradation and supports healthy …
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Cumulative Impacts of Stream Restoration on Watershed-Scale Flood Attenuation, Floodplain Inundation, and Nitrate Removal
… biodiversity), but they can also damage infrastructure and result in the loss of human life. Meanwhile, eutrophication can cause anoxic dead zones, harming aquatic ecosystems and public health. To address the issues facing riverine systems, focus has shifted to watershed-scale management …
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Cumulative Impacts of Watershed-Scale Hyporheic Stream Restoration on Nitrate Loading to Downstream Waterbodies
… nutrient loading. We constructed a HEC-RAS model of stream restoration implemented throughout a generic 4th order watershed typical of the Piedmont physiographic province of the eastern USA. We simulated restoration of hyporheic exchange as one increasingly popular technique that …
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Reservoir compensation releases and the ecology of the River Derwent, Northumberland.
… of impoundment on the current flow regime was modelled and the impacts of predicted new regimes were predicted, using a 1D hydrodynamic model (HEC-RAS), as part of a modelling process known as CRAM (Compensation Release Assessment at the Meso-scale). Depth and velocity were the foci of the …
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Simulation of catchment runoff, erosion and sediment transport using a transient numerical model for Mlalazi catchment
… hydrology using appropriate and calibrated models. In an ungauged catchment where there is limited observed data, numerical models are useful tools to derive best estimates of flow, erosion and sediment transport. In this study the HEC-HMS hydrological model was developed, calibrated, …
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Hydrological assessment and modelling of the River Fani Catchment, Albania
… for the whole River Fani Catchment. Hydrological models can be a valuable tool, providing a common platform for experts, decision-makers and stakeholders for the sustainable management of catchments, especially when used within the framework of a Geographic Information System (GIS). Such models …
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Numerical Simulation of Unsteady Hydrodynamics in the Lower Mississippi River
… aid in this restoration effort a 1-D numerical model was calibrated, validated, and used to predict the response of the river to certain stimuli, such as proposed diversions, channel closures, channel modifications, and relative sea level rise. This study utilized HEC-RAS 4.0, a 1-D mobile-bed …