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Showing 1 to 20 of 35 for “"The Soil And Water Assessment Tool (swat)"”.
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Analysis of best management practices implementation on water quality using the Soil and Water Assessment Tool (SWAT)
Nitrates and phosphorus are two important nutrients required for plant growth. Unfortunately, high discharge levels of these pollutants have led to major problems, affecting both health and the ecological balance. Discharged nutrients entering the Gulf of Mexico from the Mississippi River …
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Modeling and analysis of management for an agro-ecosystem using an agent-based model interface for the soil and water assessment tool (SWAT)
Poor water quality across the Mississippi River basin and its outlet, the Gulf of Mexico, is undermining the health of ecosystems, economies, and public health. Agricultural production in the watershed has been identified as the dominant factor contributing to poor water quality. Substantial …
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Modeling the transport of sucralose, an anthropogenic tracer, in an effluent dependent watershed with the Soil and Water Assessment Tool during an extreme drought.
… of emerging concern (CECs) in rapidly urbanizing watersheds represent an area of increasing attention. The Soil and Water Assessment Tool (SWAT), has been used for numerous water quality and quantity assessments, but CEC studies using SWAT are limited. Because the North Bosque watershed represents …
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Measuring and modeling stream and air temperature relationships in a multiland use watershed of the central United States
A nested-scale experimental watershed study design approach was used in an urban watershed of the central U.S. to investigate stream water temperature (Tw) variability during water year's 2011, 2012, and 2013. Drought conditions were observed during water year 2012 when total annual precipitation …
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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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Drone Imagery Applied to Enhance Flood Modeling
… proposes using drone imagery to compensate for the lack of other flood modeling data (i.e. streamflow measurements). Three flood models were run for Dzaleka Refugee Camp, located in Dowa, Malawi. Two of the models (the Soil and Water Assessment Tool (SWAT) and the Hydrologic Engineering Center …
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A GIS-Based Watershed Impact Management Model
<p>Assessment of land use changes on hydrological processes is essential for the planning and development of sustainable land management practices and water resources. Understanding how land management practices influence hydrological components is essential for the prediction of hydrological …
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Water Quality Modeling in Kranji Catchment
This thesis describes the process and results of applying the Soil and Water Assessment Tool (SWAT) to characterize bacterial fate and transport in the Kranji Catchment of Singapore. The goal of this process is to predict bacterial loading to Kranji Reservoir under the forcing of weather and other …
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Assessment and prediction of surface water vulnerability from non-point source pollution in Midwestern watersheds
<p>"Non-point source pollution is the leading cause of impairment in surface water in the Midwest. In this research, we seek to predict which watersheds are most vulnerable to point source pollution without field sampling using publically available GIS databases. Watersheds with higher …
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Infrastructure planning for drought mitigation under climate change
Droughts continue to be a major natural hazard and mounting evidence of global warming confronts society with a pressing question: Will climate change aggravate the risk of drought at local scale? Are current infrastructure and their operation enough to mitigate the damage of future drought, or do …
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Modelling impacts of climate change on hydrology of Latonyanda River Quaternary Catchment, Limpopo Province, South Africa
The study assessed the impacts of climate change on hydrology of Latonyanda River Quaternary Catchment (LRQC). The Soil and Water Assessment Tool (SWAT) model played a huge role in climate change impact analysis because it helped in improving the understanding of climate change impacts on hydrology …
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Predicting the Downstream Impacts of Headwater Burial in Kemptville Creek Watershed (Ontario) Using the SWAT Model
Headwater streams can compose 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 …
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Assessing the impacts of environmental stressors on watershed ecosystem services integrating hydro-ecologic models and socio-cultural perspective
… been subjected to an accelerated fragmentation and degradation due to the expansion and intensification of agricultural activities to produce food and other commodities to satisfy the needs of an increasing population. Therefore, the sustainability of agro-ecosystems is an urgent need as …
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A hydrologic calibration of the SWAT model in Kranji Catchment, Singapore
The Public Utilities Board (PUB) of Singapore wishes to expand recreational activities in Singapore's surface waters through the Active, Beautiful, and Clean Waters Program (ABC Waters). One area of concern with ABC Waters is microbial pollution. Pathogens pose an immediate and substantial risk to …
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Soil Moisture-driven Drought Evaluation under Present and Future Conditions
Drought is one of the most severe natural disasters and detrimentally impacts water resources, agricultural production, the environment, and the economy. Climate change is expected to influence the frequency and severity of extreme droughts. This dissertation evaluates drought conditions using a …
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Impacts of Land Use and Climate Changes on Hydrological Processes in South Dakota Watersheds
<p>This study aims to evaluate the impacts of climate and land use change on the hydrology of South Dakota’s watersheds using the Soil and Water Assessment Tool (SWAT). The study analyzed the hydrologic impacts of climate and land use changes in two ways. The first aspect consists of characterizing …
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Hydrologic and water quality impacts from perennial crop production on marginal lands
<p>Marginal lands are proposed as a viable option for producing biofeedstocks as these lands are not heavily engaged in agricultural production or may not be suitable for intensive row-crop food/feed production. However, meeting biofeedstock production goals will require large amount of marginal …
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Adaptive Targeting: Engaging Farmers to Assess Perceptions and Improve Watershed Modeling, Optimization, and Adoption of Agricultural Conservation Practices
… agricultural conservation practices to farmland that has the greatest impact on surface water quality 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 …
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Modeling the Impacts of Rangeland Management Practices on Flow and Sediment Using SWAT
<p>Soil erosion has negative effects including: 1) loss of soil productivity, 2) water quality degradation, and 3) reducing capacity of reservoirs by deposition. For this research, the Soil and Water Assessment Tool (SWAT) model was used in the estimation of flow and sediment yield on a daily time …
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Simulation of conservation practice effects on water quality under current and future climate scenarios
<p>Analysis of the effects of implementing different conservation practices, as well as increased levels of conservation practices under existing and projected future climate, will determine if current conservation practice recommendations will be sufficient to maintain soil and water resources. …
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