A simulation assessment of the Boone River watershed: baseline calibration/validation results and issues, and future research needs

The Soil and Water Assessment Tool (SWAT) model is a continuation of nearly 30 years of modeling efforts conducted by the USDA Agricultural Research Service (ARS). SWAT has gained international acceptance as a robust interdisciplinary watershed modeling tool as evidenced by international SWAT conferences, hundreds of SWAT-related papers presented at numerous other scientific meetings, and dozens of articles published in peerreviewed journals. The model has also been adopted as part of the U.S. Environmental Protection Agency (USEPA) Better Assessment Science Integrating Point and Nonpoint Sources (BASINS) software package and is being used by many U.S. federal and state agencies, including the USDA within the Conservation Effects Assessment Project (CEAP). At present, over 250 peer-reviewed published articles have been identified that report SWAT applications, reviews of SWAT components, or other research that includes SWAT. Many of Reprinted with permission of the Transactions of the American Society of Agricultural and Biological Engineers, 2007, 50(4), 1211-1250. Copyright ASABE 2007. Assistant Scientist, Center for Agricultural and Rural Development (CARD), Dept. of Economics, 578 Heady Hall, Iowa State Univ., Ames, Iowa. Primary researcher and author, and author for correspondence. Professer, Biological Engineering Program, Dept. of Natural Resources and Environmental Design, School of Agriculture and Environmental Sciences, North Carolina A&T Univ., Greensboro, North Carolina. Soil Scientist and Agricultural Engineer, USDA-ARS, Grassland, Soil and Water Research Laboratory, Temple, Texas.