Hydrology and Hydraulics engineering is one of the most important, and often invisible, components of infrastructure and development. Behind every subdivision, roadway, bridge, detention basin and drainage system is a team of EHRA Engineering’s engineers working to understand how water moves, where it goes and how to protect communities from its impacts.
Unlike the obvious improvements of a new roadway where traffic improves, travel becomes easier and the inconvenience of construction quickly fades into appreciation, drainage engineering works differently. When it is done correctly, most people never think about it at all, but that is exactly the point.
PROTECTING COMMUNITIES BEFORE PROBLEMS OCCUR
At its core, our team’s responsibility is protecting people, property and public infrastructure from flooding and drainage failures. While the public often notices flooding immediately, they rarely see the long hours of analysis, modeling, coordination and engineering judgment required to prevent it from happening in the first place.
The process begins long before construction starts. Our team is often one of the first disciplines involved in a project because our work influences nearly every other aspect of development. Like dominos, we are one of the first to fall. We evaluate existing drainage patterns, determine how much water flows across a site, identify floodplain constraints and analyze where stormwater ultimately drains. Those findings shape everything from lot layouts and roadway elevations to project costs and schedules.
Every project, even those similar in scope, is unique. Two sites may sit side by side yet require completely different drainage solutions due to differences in outfall locations, floodplain conditions, utility conflicts, soil conditions or local regulations.
TECHNOLOGY VS JUDGEMENT
Modeling software has advanced significantly, allowing engineers to analyze many details that previously may have gone undetected. While these advancements have significantly improved accuracy, they have also increased complexity. But technology alone does not solve drainage problems.
When it comes to what parts of the job require more engineering judgement versus software output, you could argue all of it. There is a saying that you can get five H&H engineers in a room and get ten different solutions that are all correct. Sound engineering judgment is almost always more important than the model itself because a model can tell you a solution works, but an experienced engineer can look at it and tell you that it won’t. That judgment comes from experience, collaboration and understanding real-world implications beyond what the software can produce.
Our work also requires balancing priorities and is at times one of the hardest parts of the job. Engineers must design conservatively enough to protect public safety while also upholding their responsibility to budgets and client resources. You have to balance cost and public safety, and you must have excellent engineering judgment to do that.
COMPLEXITY BENEATH THE SURFACE
Outside of our discipline, we are often viewed as the necessary evil because no one wants to lose space for detention. From a public perspective, one of the biggest misconceptions surrounding drainage engineering is the belief that every flooding issue can be entirely solved, which unfortunately is not always economically feasible. Following Hurricane Harvey, rainfall values used in design increased dramatically across the region, forcing engineers to rethink how infrastructure is planned and modeled. Weather patterns continue to shift, and its uncertainty remains one of the industry’s greatest challenges.
ONE TEAM, ONE GOAL
Despite the technical complexity, I truly believe that our most successful projects are built on collaboration. That mindset extends beyond the H&H team itself. Our team works closely with survey, planning, land development and our public infrastructure teams. Having the full spectrum of services under one firm at EHRA is what allows us to create solutions that benefit entire projects and communities, not just a single discipline.
Senior engineers provide experience and gut instinct developed over years in the field, while younger engineers often bring fresh perspectives and innovative ideas. Mentorship plays a critical role in that process because engineering is not simply about producing an answer; it is understanding the difference between an answer and a good answer. Models can generate results, but engineers assign value to it and have to explain the reasoning behind decisions made.
EHRA’s H&H team is unbiasedly one of the best because of how we function together. Everyone steps in to help one another, and in crunch time, it is all hands-on deck. While not always the case, it is certainly something that our team emulates and that we encourage and teach. More than a team on paper, they truly function as one, with an understanding that we are in this together on every project.
Ultimately, the value EHRA’s H&H team brings is measured not by what the public sees, but by what they do not. Streets that remain passable during storms; developments that avoid flooding neighboring properties; infrastructure that performs safely during major rainfall events; and communities that continue functioning because the foundational systems were thoughtfully designed long before the rain arrived.
Much of that work happens quietly, behind computer screens, in field visits during storms and through countless engineering discussions and iterations. But its impact is felt every day by the communities it protects.