SWAT Literature Database for Peer-Reviewed Journal Articles

Title:A multi-model, multiple watershed examination of in-stream bacteria modeling 
Authors:Iudicello, J.J. and D.A. Chin 
Journal:International Journal of Environmental Research and Public Health 
Volume (Issue):139(5) 
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URL (non-DOI journals): 
Broad Application Category:hydrologic and pollutant 
Primary Application Category:pathogen fate and transport 
Secondary Application Category:model and/or data comparison 
Watershed Description:Little River Experimental subwatersheds I (49.9 km^2), J (22.1km^2,) K (16.7km^2), and O (15.9km^2) in south central Georgia, U.S. 
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Abstract:Excessive bacteria levels are a major water-quality problem in U.S. water bodies, and this study looked at the use of watershed-scale computer models to predict in-stream bacteria concentrations. The study site was the Little River Experimental Watershed (LREW) in Tifton, GA, and fecal coliform fate and transport models were built for four of the LREW subwatersheds over the period Jan 1996 - Dec 2002. Three models were examined: HSPF, SWAT, and the Characteristic Concentration (CC) model based on the principles of hydrograph separation. It was found that the most sensitive HSPF and SWAT water-quality parameters were associated with the in-stream bacteria processes while parameters relating to terrestrial activity varied from sensitive to completely insensitive. Model performance was evaluated by the Nash-Sutcliffe statistic, and HSPF, SWAT, and the CC model performed comparably, while showing distinct performance capabilities. 
Keywords:HSPF, SWAT, Bacteria, Fecal Coliform, Modeling, Water Quality