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Evaluation of a Decision Support System for Phosphorus Management at the Watershed Scale

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  033035,  2003 ASAE Annual Meeting . (doi: 10.13031/2013.14998) @2003
Authors:   Amir P. Nejadhashemi, Ellen R. Turner, Hubert J. Montas, Adel Shirmohammadi
Keywords:   Geographic Information System, Expert System, Water Quality Modeling

A Decision Support System (DSS) is applied to the development of a phosphorus export control Best Management Practice (BMP) allocation plan for a watershed on the Eastern Shore of Maryland. The system efficiently identifies critical source areas, probable causes for excessive export and applicable BMPs. The predicted reduction in phosphorus loading of watershed streams, with BMPs in-place, is 79% and exceeds the 50% reduction goal of the analysis. It is concluded that the present DSS is an effective tool for developing BMP allocation plans.

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