The Stream and Stormwater Group within Ayres’ Western Division has announced three supervisors who will provide oversight for the highly specialized group of 32 experts based in Fort Collins, Colorado.

Dusty Robinson, PE, will supervise the river systems health discipline, focusing on stream restoration, stream stabilization, and post- and pre-fire mitigation projects such as those the group has performed for the cities of Loveland, Greeley, and Fort Collins, as well as providing dam removal and rehabilitation services in support of the Water Resources Group.

Dale Mathison, PE, will supervise the SUE and survey discipline, focusing on continuing to grow our subsurface utility engineering team and supporting the growth of our local survey team, working closely with Jeff Van Horn, PLS.

Dylan Armstrong, PE, will supervise the drainage and stormwater discipline, including local drainage projects in the DOT and local municipality transportation realms, as well as complex stormwater projects that include master planning and closed conduit projects, bringing better support for Ayres’ multi-divisional projects and rebuilding the firm’s local Front Range stormwater presence.

“All three of these gentlemen started their careers with Ayres, and each has demonstrated his leadership in his own way,” says Anthony Alvarado, PE, CFM, vice president of the Western Division. “They have helped build a world-class team here, and these promotions recognize our confidence in their ability to maintain excellence and leading-edge design in the services we provide to clients.”

Dusty joined Ayres in 1998 as a civil engineer in the field of water resources engineering. His primary focus is on river engineering studies, with a variety of experience related to floodplain mapping, flood mitigation, bank protection design, river restoration, aquatic habitat analysis, grade control design, channel stability analysis and design, transportation hydraulics, hydraulic bridge design, and scour analysis. He has a broad range of experiences involving 1D and 2D hydraulic modeling throughout the nation. Dusty’s career includes managing million-dollar-plus bridge scour analysis programs for state transportation agencies and multi-year river and stream on-call projects for municipalities. Dusty helped create the Federal Highway Administration 2D Hydraulic Modeling for Highways in the River Environment reference document, and he is assisting with updating the FHWA’s Hydraulic Design of Safe Bridges manual and course material. He teaches the FHWA/NHI Hydraulic Design of Safe Bridges and the 2D Hydraulic Modeling courses.

Dale joined Ayres as an intern in 1997 and then as a full-time civil engineer in 1998. He became an associate civil engineer for the City of Sacramento, California, in 2002 and then returned to Ayres in 2015. Dale has managed water, sewer, and stormwater capital improvement projects from planning and design through construction, including cured-in-place pipe (CIPP) lining, large diameter gravity systems, pipe jacking, and pipe bursting projects. He has provided technical review of development projects, coordinating with various departments to achieve compliance. Dale also brings experience with river hydraulics analysis and land and bathymetric GPS surveying. Dale has immersed himself into subsurface utility engineering and oversees our SUE crews as they help clients comply with Colorado’s new SUE law and make infrastructure construction safer. Dylan has been with Ayres since getting his civil engineering master’s degree at Colorado State University, where he specialized in hydraulic engineering, stream rehabilitation, and river mechanics. Dylan has worked on a diverse range of projects, including the planning, analysis, design, project management, and construction administration phases of water resource and civil engineering projects. He is passionate about prioritizing hydraulic and stream health issues as a foremost consideration within multidisciplinary projects, which has played a pivotal role in numerous projects nationwide. He has extensive engineering project skills, including GIS, 1D and 2D hydraulic modeling, floodplain permitting, scour calculations, scour countermeasure and design, low-tech process-based engineered approaches, culvert design, bridge design, hydraulic structure design, dam investigations, flow monitoring, field assessments, habitat analyses, AutoCAD design, stream rehabilitation and river corridor grading, and bankfull discharge analyses.