Over the years, we’ve been honored to welcome some of the most talented minds in the industry to our team, and our partners benefit from their knowledge, guidance, and expertise.

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William deRosset


Senior Hydraulic Engineer

Fort Collins, CO

"I love those people (emergency watershed protection team, Will deRosset, Chelsey Heiden, and Colin Barry). No. 1, I feel like we have more than just a working relationship. I can call them at any time, and they'll answer questions for me. It's just been a wonderful partnership; they are very respectful, and our relationship has turned into a wonderful friendship."
Sandra Lundt
Fort Collins, CO

I enjoy the challenges presented by a range of projects in water resources engineering and hydraulic modeling. I have significant experience in 1- and 2-dimensional steady and hydrodynamic hydraulic models, including HEC-RAS, RMA-2V, SRH, FESWMS, FLO-2D, CCHE-2D, and UNET. I also have done substantial work in bridge scour, sediment transport analysis, stream rehabilitation, and stable channel design. I have used the HEC-6 and HEC-6T 1-dimensional sediment transport models.

I'm an instructor for five National Highway Institute (NHI) courses, including 135041: Introduction to HEC-RAS and 135090: Hydraulic Design of Safe Bridges. I received Instructor of Excellence awards from NHI for my teaching work in fiscal years 2012 and 2019.

  • BS, Civil Engineering, Colorado State University
  • BA, History, Radford University
  • Registered Professional Engineer, ID
  • Registered Professional Engineer, MT
  • Registered Professional Engineer, ND
  • Registered Professional Engineer, CO