People

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

(he/him)

Senior Hydraulic Engineer

Fort Collins, CO
970.223.5556
deRossetW@AyresAssociates.com

"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.