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 29 for “"Watershed modeling"”.
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Development and evaluation of a stream temperature component within the PRMS watershed modeling program
… the health of many aquatic ecosystems. Computer modeling software can help predict the response of watershed and stream systems to changes in climate or other conditions. This thesis project concerns the development of a new module for the deterministic prediction of stream temperature within the …
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New applications of STEPL watershed modeling of CAFO feedlot runoff and implications of surface water impacts
… among other pollutants, by land use for a watershed. The Dry Creek Watershed Basin of Sioux County, Iowa, is delineated to capture runoff from large CAFO cattle feedlots. Feedlots are classified by digitizing land use data in ArcGIS, in order to estimate pollutant loads from each …
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Uganda Manafwa River early flood warning system development hydrologic watershed modeling using HEC-HMS, HEC-RAS, ArcGIS
… 2013, in an attempt to establish a hydrologic modeling system that relates upstream precipitation with downstream stream discharge using ArcGIS, HEC-HMS and HEC-RAS. This work is dedicated to present the progress in the modeling endeavor, provide technical guidance to the extent possible, and …
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Integrated watershed modeling of mountainous landscapes : Assessing the environmental performance of an intensive farming system in South Korea
… of nonpoint source pollution with an approach of watershed modeling. Among various watershed modeling tools, we chose the Soil and Water Assessment Tool (SWAT) which can handle various management systems. The SWAT model was adapted to two study sites, the Jawoon-ri and the Haean catchment. The …
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Adaptive Targeting: Engaging Farmers to Assess Perceptions and Improve Watershed Modeling, Optimization, and Adoption of Agricultural Conservation Practices
… has received wide support from scientists and watershed managers. The targeting approach has, however, been politically contentious as many believe farmers will oppose the approach on grounds such as privacy invasion and unfair distribution of government incentives. Targeting conservation …
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Estimating Uncertainty in HSPF based Water Quality Model: Application of Monte-Carlo Based Techniques
… for the uncertainty estimation in water quality modeling as related to TMDL development, four Monte Carlo (MC) based techniques—single-phase MC, two-phase MC, Generalized Likelihood Uncertainty Estimation (GLUE), and Markov Chain Monte Carlo (MCMC) —were applied to a Hydrological Simulation …
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Conceptual, algorithmic, and statistical exploration of relations between runoff generation, stream geomorphology, and watershed topography in West Texas
… validation of hydrologic techniques, hydraulic modeling, and bridge scour analyses. 3. The Effect of Terrain Ruggedness on Runoff Generation and Flood Magnitude This chapter constitutes a study of the influence of both terrain ruggedness and areal proximity on flood magnitude. Discussion and …
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Hydrology of the Beaver Creek watershed using the TR-20 model and the HEC-HMS program
… Davis to Bismarck passes through Beaver Creek watershed, Tucker County, West Virginia, which was heavily affected by the historical mining, deteriorating the water quality conditions of the Beaver Creek. To improve the water quality of Beaver Creek, identification of the sources of impaired …
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Web-enabled Spatial Decision Support System for Interdisciplinary Watershed Management
The development and use of web-enabled tools for watershed modeling and decision-making have gained popularity lately with the increase in internet speed and accessibility. Most of the web-enabled tools available today address the watershed problems related to a narrow discipline like hydrology, or …
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A framework for Improving Hydrologic and Water Quality Prediction in Urbanized Watersheds through Stakeholder Co-Design and Multi-Model Integration
Urban watersheds present a unique modeling challenge due to the complex interplay between natural and hydrologic processes, engineered infrastructure, and the diverse decision-making by multiple stakeholder groups. These interactions span multiple spatial and temporal scales, making it difficult …
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A Systems Approach to Modeling and Impact Assessment in an Urbanizing Watershed
… futures combined with spatially explicit watershed modeling provides a way to scope resource management problems and increase understanding of how current policies, regulations, and practices could play out in the future and impact both watershed-level hydrologic response and water …
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Hydrologic Response of Alternative Valley Fill Reclamation Designs
… increase stormflow response of the affected watersheds when compared to the original, undisturbed conditions. One method that has shown success in reclaiming surface mine sites in semi-arid regions of the western U.S. is geomorphic landform design. Geomorphic reclamation is based upon …
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An Uncertainty-Based Approach to the Total Maximum Daily Load Development
… Total Maximum Daily Load calculations using the watershed modeling tool HSPF. In order to determine the prior, likelihood, and posterior distributions of uncertainties involved in Bayesian approach, various probability density functions are derived. The temperature measurement induced uncertainty …
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Event-based hydrologic model calibration using NEXRAD in a data-poor region of southern New Jersey
… necessary for model calibration. Several HEC-HMS watershed models were developed and calibrated using NEXRAD data for the Upper Maurice River watershed in southern New Jersey, which contains the two growing urban areas of Vineland and Glassboro, to meet three objectives: (1) to validate that …
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Enhanced Soil Moisture and Streamflow Estimation in Ungauged or Data-Scarce Watersheds
Watershed models are important tools for quantifying hydrologic processes and evaluating water management practices. These models simplify complex systems through parametrization and assumptions, particularly in semi-distributed frameworks like Soil and Water Assessment Tool (SWAT). Clear …
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Improving Watershed Models to Achieve a Better Prediction of Water Quantity and Quality
Watershed models are powerful tools for simulating different scenarios to understand the impact of management practices and are used to support and guide decision-making. However, there are often challenges and limitations to using watershed models in some areas of watershed modeling; 1) model …
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Modification of the SWAT Model to Simulate Hydrologic Processes in a Karst-influenced Watershed
… the water used for drinking. In karst-influenced watersheds, karst features such as sinkholes and sinking streams act as rapid pathways for carrying water and pollutants into streams and groundwater. Human activities on karst landscapes can present some special problems such as alterations to …
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Modeling the Dissemination of Antibiotic Resistance in Aquatic Environments
… has become a growing issue worldwide. The use of watershed-scale models is popular with many other water quality issues but not in the case of antibiotic resistance. In this study, we introduce a watershed-scale bacteria fate and transport model to simulate antibiotic resistance in E. coli. This …
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Predicting the Downstream Impacts of Headwater Burial in Kemptville Creek Watershed (Ontario) Using the SWAT Model
… up to 80% of the total stream length within a watershed but remain most susceptible to stream burial during land use change or management. Rerouting streams into tile drains, canals, non-perforated pipes and paving over, are all examples of stream burial. This study explores the importance of …
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Locally derived nonpoint loading estimates for the Boeuf River/Bayou Lafourche watershed
… as Soil and Water Assessment Tool (SWAT) in modeling Boeuf watershed will also be examined. Finally, the performance of three biochemical oxygen demand (BOD) models will be compared using data specific to the Boeuf Watershed and the surrounding area.
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