Principal, Horsley Witten Group, Inc.

Scott Horsley has thirty years of professional experience in the field of water resources management. He holds degrees in biology and marine policy. He has worked as a consultant to private industry, federal, state, and local jurisdictions throughout the United States, Central America, the Caribbean, Eastern Europe, the Pacific Islands, and China, and currently serves as a consultant to the Cape Cod Commission, assisting with the development of adaptive management program for nutrient management using green infrastructure. Horsley has served as an expert witness in state and federal courts in the areas of hydrology, wetlands science, water quality, and storm water, and as an instructor for several US Environmental Protection Agency (USEPA) workshops on water resources management. He has authored numerous publications on water resources mapping and protection, and served on numerous advisory boards to the USEPA, the National Academy of Public Administration, the Massachusetts Department of Environmental Protection, the Massachusetts Executive Office of Environmental and Energy Affairs, the National Groundwater Association, and the Massachusetts Audubon Society. Horsley has received national awards, such as the USEPA Technology Innovator Award, as well as local awards, such as the Mashpee Conservation Commission, for his work in the wetlands and storm water management fields. He lives on Beacon Hill in Boston and Cape Cod, and enjoys bicycling, sailing, and traveling.


  • MA University of Rhode Island