Our two senior staff offer a combined 30 years of experience in municipal stormwater consulting plus an additional 15 years of breadth in multi-disciplinary environmental consulting. 



Our clients benefit from our unique combination of technical and regulatory expertise, outstanding communication skills, and flexibility in tailoring our services to best suit client needs.


We provide a variety of services ranging from watershed coordination where we strategize the development of watershed pollutant control measures to Municipal Stormwater Permit reporting, training and public outreach.


412 Olive Avenue, #189

Huntington Beach, Ca 92648

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Watershed Management


McGowan Consulting LLC provides Environmental consulting services to municipalities in Southern California. Ours is a specialized consulting practice focused on small- to mid-sized cities and the specific challenges they face in responding to rapidly changing environmental regulatory requirements, primarily in the area of storm water quality and watershed protection.