CEE and the Environmental and Water Resources Group of the Boston Society of Civil Engineers Section will present the 2013 John R. Freeman Lecture on April 18 in the Tang Center. Lawrence J. Murphy, P.E. CDM Smith, New York, NY, and Michael Bachand, P.E., U.S. Army Corps of Engineers, will talk about Hurricane Storm Barrier Design and Operation. The reception begins at 6 p.m., followed by the lecture at 7 p.m. The public is invited.