“I enjoy working with Derek and very much appreciate his professional dedication and technical enthusiasm to finding the right solutions for any vibration-related issue. He has the ability to readily communicate the technical needs, along with the science behind the project specific needs, to any audience.”

Derek Watry, Principal & President

Since joining Wilson Ihrig in 1992, Derek has gained experienced in many areas of practice including rail/transit, environmental, construction, forensic, architectural, and industrial. For all of these, he has conducted extensive field measurements, established acceptability criteria, and calculated future noise and vibration levels. In the many of these areas, he has prepared CEQA and NEPA noise technical studies and EIR/EIS sections. His extensive work on rail transit systems has taken him all around the United States, as well as to São Paulo, Hong Kong, and Tel Aviv. Derek has a thorough understanding of the technical, public relations, and political aspects of environmental noise and vibration compliance work. He has helped resolve complex community noise issues, and has also served as an expert witness in legal matters.

In addition to his project work and role on legal cases, in his role as company President, he is an integral part of overseeing the companies operations.


M.S. Mechanical Engineering, University of California, Berkeley
B.S. Mechanical Engineering, University of California, San Diego
M.B.A. Saint Mary’s College of California

Why I Work at Wilson Ihrig

“Like many people at Wilson Ihrig, I’ve been here for decades. Why? Because the work is challenging, our projects are in interesting places all around the world, and, most importantly, because I get to work with great people both inside and outside the firm. We have a very collegial and inquisitive culture, and we are constantly bouncing ideas off of each other. By tapping into the cumulative knowledge of my colleagues, I continually learn and grow, all the while providing my clients with the benefit of the firm’s collective experience. On the client side, I truly appreciate that Wilson Ihrig attracts clients who are quality oriented. I enjoy helping people who care about the acoustical aspects of their projects.”