Derek St. John

Derek St. John, P.E., CFM

Vice President Business Group Director - Infrastructure Water Resources 713.266.6900


Derek St. John has 15 years of experience and leads LAN’s stormwater management team specializing in hydrology and hydraulics (H&H) analysis and design. He has led numerous regional mitigation planning and design efforts for a variety of improvement projects, including drainage system master planning, watershed level H&H studies, flood damage reduction feasibility studies; and storm sewer, culvert, and basin design.

He has utilized advanced planning and analysis techniques (2D modeling) to identify not only system deficiencies, but the root causes. This in-depth understanding provides improvement concepts that address deficiencies and are tailored to project needs. His approach to design focuses on the cost effective construction, long term maintenance of the proposed infrastructure, and minimizing impact and disturbance to the community.


Bachelor of Science, Civil Engineering, Texas A&M University


Texas Professional Engineer

Certified Flood Plain Manager