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Showing 1 to 20 of 60 for “"Soil and water assessment tool"”.
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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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Integrative Analysis of Policy Changes for a Coastal Watershed: Implications for Agriculture and Ecosystem Health
… modeling, the effects of sea level rise, and socio-economic factors influencing watershed management in North Carolina, primarily utilizing the Soil and Water Assessment Tool Plus (SWAT+) with four independent publication chapters. The first chapter assesses the effectiveness of various …
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Locally derived nonpoint loading estimates for the Boeuf River/Bayou Lafourche watershed
There is currently a great demand for data and models that can be used to quantify nonpoint source pollutant loads from different land-use types. The Louisiana Department of Environmental Quality (LDEQ) is in the process of implementing management programs for impacted water bodies based on the …
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Near Real-time Seasonal Drought Forecasting and Retrospective Drought Analysis using Simulated Multi- layer Soil Moisture from Hydrological Models at Sub- Watershed Scales
… a stratified approach of drought severity assessment using multi-layer simulated soil moisture. SWAT (Soil and Water Assessment Tool) models are calibrated for 50 watersheds in the South-Atlantic Gulf region of the Southeastern US and a high-resolution daily soil moisture dataset is …
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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
… located in Dowa, Malawi. Two of the models (the Soil and Water Assessment Tool (SWAT) and the Hydrologic Engineering Center River Analysis System (HEC-RAS)) are commonly used hydrological-hydraulic based models. The third model, the Water Caused Erosion Patterns (WCEP) model, was proposed by the …
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Phosphorus Transport and Distribution in Kentucky Soils Prepared Using Various Biochar Types
… by day. Phosphorus transfer from agricultural soils is an important environmental issue that is being closely observed as the transport of phosphorous to water bodies is adversely affecting water quality due to accelerated eutrophication. It is important to establish phosphorous models that …
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Computer-based decision-support methods for hydrological ecosystem services management
Changing climates, human population growth, and aging infrastructure threaten the availability and quality of one of life's most vital resources, water. Hydrological ecosystem services are goods and benefits derived from freshwater that include flood damage mitigation, water for agricultural and …
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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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Hydrological responses to the synergistic changes in climate and land cover in the alpine pastoral region
… the hydrological responses to climate change and land use and land cover (LULC) change is imperative for sustainable river basin management. In this study, hydrological regimes of the upper Lancang River Basin under environmental changes are assessed using a semi-distributed hydrologic model, …
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The analysis of reservoir operation rules in the southwestern United States using a hidden Markov-decision tree model
… rules can be complex under various situations and are not well understood yet. The objective of the study is to find out patterns of actual reservoir operation rules in a specific region under different conditions. The results are helpful to understand realistic reservoir operation behaviors. …
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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
… 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 vulnerability ratings can then be …
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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
… 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 as well as in …
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Development of a holistic model for science informed decision support in intensive agricultural areas.
… varios modelos hidrológicos con SWAT (Soil and Water Assessment Tool) así como una combinación de SWAT con la parte hidrodinámica del modelo WET (Water Ecosystems Tool). Dos de los estudios publicados se centraron en la evaluación de la eficacia de mejores prácticas de gestión agrícola …
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A Water Balance and Sediment Yield Analysis Model for the Lopez Lake Reservoir
… Lake Reservoir is the primary source of potable water for the Cities of Arroyo Grande, Grover Beach, Pismo Beach, and to the Community Service Districts of Oceano and Avila Beach. In this study, a water balance and sediment yield analysis model was developed for the reservoir’s watershed. The …
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