Since 1980, Affinis has provided dam engineering services. Whether we’re designing a new dam or repairing an existing one, we are recognized by our clients for our constructible solutions. Our dam engineering services include:

  • Dam inspections
  • Dam maintenance and operation
  • Minor dam design
  • Hydraulic structure design
  • Dam repair of infrastructure
  • Dam rehabilitation, including new inlet and outlet structures, bridge structures and spillways
  • Bathometric surveys
  • Sediment removal

Affinis does a great job of translating highly technical information into easy-to-understand terms that are relevant to our diverse stakeholders. And, they’re very skilled at analyzing how historic project approaches impact our future needs.

Rick Neece, President
Weatherby Lake Improvement Company

Silt Buildup Surveys at Weatherby Lake

Affinis Survey Team at Weatherby Lake

A lake may seem resistant to change, but hard rain events and construction activities taking place upstream can adversely affect its shorelines, capacity, and eco-system more than you may expect. Silt and mud will always accumulate at the points where tributaries feed water into the lake. However, seasons with extreme amounts of rain or construction performed upstream without proper erosion control can cause sediments to wash into the lake at alarmingly fast rates.


Affinis Talent

We have a talented group of co-workers at Affinis with wide-ranging interests. It’s one of the biggest reasons we enjoy working here and why so many of our clients turn to us year after year. Now, you can learn a little more about each of us in the About Us section of the website. Discover how we spend time both in and out of the office.



Our structural engineering group is invested in protecting communities with reliable infrastructure. With each project, we work to reduce risk and create a resilient structure, protecting our clients’ investments and the surrounding area.


Developing concepts and analyzing alternatives is something we do well. Our traffic engineers are skilled at collecting data and then, using that information to improve capacity and increase safety on our roadways.

Roadway Engineering

Our roadway engineering group moves communities forward. Whether designing residential streets, thoroughfares, or highways, we are focused on improving quality of life, supporting economic development, and increasing safety.


When designing stormwater solutions, we look at the entire site. Our comprehensive approach maximizes budgets and minimizes disruptions to residents, streamlining future improvements.


Our experienced railroad engineering team attends trainings and obtains certifications to increase safety on site. We use this continuous education and our past experiences to complete projects quickly and efficiently.

Construction Engineering

Communication, collaboration, and transparency are the keys to our construction engineering approach. By focusing on forming long-lasting relationships, we are able to anticipate obstacles and find effective solutions for our clients and partners.


Our forward-thinking survey team uses a combination of new technology and proven methods to deliver accurate data to our clients. This allows them to fully capture the existing conditions of a project site and understand which elements should be included in every survey.

How can we make your life easier?
Send us a note or call us today to learn how we can help you.

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