Trihydro is an engineering and environmental consulting firm committed to providing effective solutions. We approach each project as an opportunity to partner with our clients and build trust based upon successful outcomes. With project experience extending back to 1984, our professional engineers, geologists, scientists, designers, and regulatory experts understand how to take a strategic vision, turn it into a practical plan or design, and move it through project delivery. 

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Solutions you can count on

We offer comprehensive environmental services, engineering expertise, and technology solutions.
We focus on how each provided service factors into the bigger picture, so our solutions fully integrate into our clients' overall visions.

Our services

People you can trust

Trihydro has 500 people dedicated to service excellence. Our mid-size means
we have the expertise and manpower to provide project solutions, while still being small
enough to prioritize our individual clients' needs.

Our team

A cultural code

Trihydro's corporate code of conduct is based on a book titled Cowboy Ethics, What Wall Street Can Learn from the Code of the West by James P. Owen. The Code of the West has 10 tenets, and in 2017, Trihydro added one more: "Leave it better than you found it." Our cultural code underpins how we approach projects, relationships, and challenges.

code of the west

moving INDUSTRIES forward

The environmental and engineering services we provide benefit multiple industries. While the types of services we offer may be similar, each industry's challenges are unique. Trihydro is committed to understanding each specific client to develop specific, fit-for-purpose solutions. 


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Featured Projects

Hydraulic Analysis and Mapping to Mitigate Flood Impacts

STARR II, a Joint Venture


The Strategic Alliance for Risk Reduction II (STARR II) is a joint venture focused on flood risk mapping, assessment, communication, and mitigation. Under the mission to reduce the loss of life and property caused by floods, STARR II assists the Federal Emergency Management Agency (FEMA) in working with communities across the nation to prepare for and respond to these natural disasters.

In September 2020, Trihydro was selected as a subcontractor to provide hydraulic analysis and flood mapping deliverables. Trihydro used the US Army Corps of Engineers (USACE) River Analysis System (HEC-RAS) software to model 52 river miles covering 12 streams in two counties (Carbon and Monroe) in northeastern Pennsylvania. The hydraulic modeling incorporated detailed field survey information for over 80 structures and used high-resolution spatial datasets to parameterize the models. Trihydro also used lidar-based digital elevation model (DEM) datasets and bathymetric survey information to create the hydraulic model cross sections.

Modeling included the Standard Identification Number (SID) 84-compliant modeling events (10%, 4%, 2%, 1%, 0.2%, and 1%-plus), as well as a floodway analysis. Results were used to create flood map products for inclusion in updates to the countywide Flood Insurance Study (FIS) reports. As part of this effort, Trihydro prepared floodway data tables for the study streams and a Hydraulic Analysis Report documenting the methodology, assumptions, and data used in the hydraulics analysis. Additionally, Trihydro developed a GIS database compliant with the “Hydraulics Data Capture Standards, Technical Reference: Data Capture Standards (February 2019).”

Trihydro’s work with the STARR II team in support of FEMA will help communities to make better-informed flood and risk management decisions.

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