Meet the Staff

The Center has the staff with credentials to identify and address the needs of local watershed stakeholders and resources available from the university and partners. The Center's offices are located within Clemson University Public Service & Agriculture and housed at the Environmental Toxicology Center just off campus; the Center operates as a university-wide center, drawing intellectual resources from all five colleges within Clemson University.  You can contact us individually (contact details below).  We look forward to hearing from you!

Katie Callahan

In November 1, 2013, Katie Callahan was charged to direct the Center, after serving as statewide coordinator for Carolina Clear since 2008. Katie has been involved in Clemson Public Service & Agriculture natural resource programs since 2008, at Carolina Clear and as an Extension Service associate. She holds an undergraduate degree in marine science and a master's in environmental science, and has specialized in monitoring and mitigating the effects of water pollution and working with communities to address regulatory mandates.She has co-authored numerous watershed management plans, has utilized microbial source tracking to prioritize watershed best management practices, directs environmental education programming and communication methods, and leads the collection of environmental attitudes and knowledge surveys in the state. 


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Cal Sawyer

Cal Sawyer is an Associate Professor in the Department of Agricultural Sciences at Clemson University and the Associate Director of Clemson’s Center for Watershed Excellence. He coordinates development and implementation of numerous Extension projects, including South Carolina's Certified Erosion Prevention and Sediment Control Inspector and Certified Stormwater Plan reviewer programs. Sawyer routinely provides water quality, water quantity and stormwater-related information to various clientele groups, including homeowners, community and government officials, public works and planning staffs, engineers, landscape architects, developers, contractors, and other professional decision-makers. He has taught or co-taught nine (9) undergraduate and graduate courses at Clemson, including Soil and Water Conservation, Nonpoint Source Management in Engineered Ecosystems, Vegetative Succession in Restored Ecosystems, and Special Problems in Agricultural Mechanization and Business. His applied research interests include sediment-bacteria dynamics, turbidity reduction, low impact development and watershed management and includes funding from the US Environmental Protection Agency, the US Department of Agriculture the US Department of Transportation, the US Park Service and the National Science Foundation.


Charly McConnell

Charly McConnell joined the Water Resources program team in August 2015 and serves as the Water Resources Agent for the campus of Clemson University. She received both her B.S. degree in Environmental and Natural Resources in 2013 and her M.S. degree in Plant and Environmental Sciences in 2015 from Clemson University. While at Clemson she interned at the Pickens County Extension office for four years, working closely with their Natural Resources and Carolina Clear Agent. Charly is currently responsible for working with students, faculty/staff and the community of Clemson as a whole to raise stormwater and watershed awareness for Clemson University’s campus.