Shirley E. Clark (Ph.D., P.E., BC. WRE, ENV SP, F. EWRI) is a professor of environmental engineering at Penn State Harrisburg and Acting Director of the School of Science, Engineering, and Technology. Her research has primarily focused on improving the effectiveness of stormwater treatment systems and understanding the hydrologic cycle in the urban environment as impacted by land development, including determining the performance of stormwater treatment systems, the impacts of land development on soil structure and infiltration, and the impacts of road salts on soil infiltration. She is a former member of the Board of Directors for the Chesapeake Stormwater Network and has participated on several Chesapeake Bay Stormwater Expert Panels. She also served on a National Academies of Science, Engineering, and Medicine panel on updating the general industrial stormwater permit. She currently serves on the Pennsylvania Water Resources Advisory Committee and on STAC. She is the immediate past-president of ASCE's Environment and Water Resources Institute. She also serves on the ASCE-NOAA Task Force and on the NOAA Industry Proving Ground Advisory Committee and the Taskforce on Workforce Development.