At DGR Engineering, we build the foundation for every day. From roads and power lines to where parks and water intersect your life, we make it all work, and we’ve been doing it for more than 70 years. Our projects in civil engineering, water systems, electrical distribution and surveying can be
found all across the Midwest.
We build projects that both our clients and our employees can be proud of because we live where we work. With offices in Rock Rapids, Sioux City, and Sioux Center, Iowa; Sioux Falls, Rapid City, and Belle Fourche, South Dakota; and Luverne, Minnesota, we share that foundation with our clients.
As one of the top engineering firms in the country, DGR Engineering received notice that it was selected as a repeat honoree by PSMJ Resources, Inc. for inclusion in its 2025 “Circle of Excellence”. DGR Engineering has earned this honor every year since 2014.
Our Work
New Airport Development
DGR led the design and construction phase engineering for the development of a new $30 million airport. Tasks included all phases of design and construction engineering activities.
Sioux County, IA
Drainage Project
DGR Engineering was hired to analyze and model 120 acres within the city that had experienced multiple flooding events in the recent past.
Sioux Falls, SD
Wastewater Treatment Facility (SBR)
The new SBR system utilizes the existing aeration lagoon for equalization and another lagoon cell for sludge storage, which reduced the cost of the project for the City and provided more operational flexibility.
Dell Rapids, SD
Site Development
Site improvements included demolition and removals, grading, utilities, paving of parking lots, retaining walls, sidewalks and playgrounds.
Sioux City, IA
Water System Expansion
Tremendous demand for new service connections made this expansion project the largest ever undertaken by Kingbrook Rural Water, Inc.
Southeastern SD
