نتایج جستجو برای: swat model

تعداد نتایج: 2105528  

2009
Prem B. Parajuli Nathan O. Nelson Lyle D. Frees Kyle R. Mankin

This study was conducted under the USDA-Conservation Effects Assessment Project (CEAP) in the Cheney Lake watershed in south-central Kansas. The Cheney Lake watershed has been identified as ‘impaired waters’ under Section 303(d) of the Federal Clean Water Act for sediments and total phosphorus. The USDA-CEAP seeks to quantify environmental benefits of conservation programmes on water quality by...

Journal: :Preventing Chronic Disease 2008
Diane O Dunet Phillip B. Sparling James Hersey Pamela Williams-Piehota Mary D Hill Michele Reyes Carl Hanssen Frances Lawrenz

INTRODUCTION The Centers for Disease Control and Prevention developed the Swift Worksite Assessment and Translation (SWAT) evaluation method to identify promising practices in worksite health promotion programs. The new method complements research studies and evaluation studies of evidence-based practices that promote healthy weight in working adults. METHODS We used nationally recognized pro...

2001
R. D. Harmel C. W. Richardson K. W. King

Watershed models such as SWAT (Soil and Water Assessment Tool) simulate water quality impacts of land and water resource management alternatives. To simulate these impacts, long-term daily rainfall data are necessary. In the absence of measured rainfall data, watershed models use weather generators to simulate rainfall events. The objective of this study is to examine several daily precipitatio...

آسیایی, مجید, رئیسی, آرزو, زاهدی, احسان , طالبی, علی, طباطبائی, سید عباس ,

Underground dams are structures that block the natural flow of groundwater and causes underground water resources. In this study, at first18 prone area stounderground Dams were identified using Boolean logic and geology parameters, land use, slope, distance from roads and distance from fault. In the discussion of underground dams, subsurface flow has high importance so that if there is not suit...

This study aims to simulate runoff and runoff quality of Zarrineh river basin by SWAT model. Calibration and verification were done respectively with monthly runoff statistics in SWAT CUP by SUFI2 method for 1992-2013, for 12 sub basin, 226 HRU and monthly nitrate data for 2006-2009. The highest runoff sensitivity and runoff quality with minimum Pvalue and maximum absolute value Ttest belong to...

ژورنال: علوم آب و خاک 2017
حسینی, مجید, طباطبایی, محمود رضا, غفوری, محمد, مکاریان, زینب,

In the last decades, climate change and fluctuation of water balance have been the main reason to apply hydrologic models for estimating quality and quantity of water components as efficient tools in water planning of critical conditions. In addition, these hydrologic models with potential to study the effects of watershed management practices on the runoff components are suitable tools for opt...

2008
M. Fink P. Krause

The scientific sound definition of measures to achieve the goals of the EU water framework directive (WFD) acquires spatially distributed analyses of the water and substance dynamics in mesoto macro-scale catchments. For this purpose, modelling tools or systems are needed which are robust and fast enough to be applied on such scales, but which are also able to simulate the impact of changes on ...

2007
Daniel V. Murphy Byron G. Zollars

III Lincoln Laboratory recently completed the three-year Short-Wavelength Adaptive Techniques (SWAT) field program, designed to investigate the performance of adaptive optics in a variety of scenarios. This article describes the operation of the SWAT adaptive optics system working with cooperative beacons. Examples are presented of system operation in compensating star images and in propagating...

2006
Manoj K. Jha Jeffrey G. Arnold Philip W. Gassman

The Raccoon River Watershed (RRW) in West-Central Iowa has been recognized as exporting some of the highest nitrate-nitrogen loadings in the United States and is a major source of sediment and other nutrient loadings. An integrated modeling framework has been constructed for the RRW that consists of the Soil and Water Assessment Tool (SWAT) model, the interactive SWAT (i_SWAT) software package,...

2007
Remegio B. Confesor Gerald W. Whittaker

In optimization problems with at least two conflicting objectives, a set of solutions rather than a unique one exists because of the trade-offs between these objectives. A Pareto optimal solution set is achieved when a solution cannot be improved upon without degrading at least one of its objective criteria. This study investigated the application of multi-objective evolutionary algorithm (MOEA...

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