Mr. Hahn has over 30 years experience as a Water Resource Engineer. In his current position as Chief Environmental Engineer with the Southeastern Wisconsin Regional Planning Commission, he directs the activities and staff of the Commission's Environmental Planning Division, including the regional water quality management and stormwater and floodland management planning programs. He has served as the lead author and/or project manager for numerous SEWRPC watershed-based plans, including the regional water quality management plan update for the greater Milwaukee watersheds (2007); the comprehensive plan for the Des Plaines River watershed (2003); and stormwater management plans for the Cities of Brookfield and West Bend and the Villages of Elm Grove and Menomonee Falls. He is a registered Professional Engineer and Professional Hydrologist in the State of Wisconsin.
Mr. Hahn received a B.S. degree in Civil Engineering from the University of Notre Dame and an M.S. in Civil Engineering from the University of Minnesota, where he was a research assistant at the Saint Anthony Falls Hydraulic Laboratory. He recently participated as a panelist on a National Public Radio "Science Friday" program addressing Great Lakes water issues. He has given presentations at numerous professional conferences and for Marquette University, the University of Wisconsin-Milwaukee, the University of Wisconsin-Extension, Carroll University, and the U.S. Army Corps of Engineers.