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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 65 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. We have offices in Rock Rapids, Sioux City, and Ankeny, IA as well as Sioux Falls, SD and we share that foundation with our clients.

As one of the top engineering firms in the country, DGR received notice that it was selected as a repeat honoree by PSMJ Resources, Inc. for inclusion in its 2019 “Circle of Excellence”. DGR has earned this honor every year since 2014.

Treatment Plant & Well Exploration

DGR Engineering worked closely with OCRWS to design a new Water Treatment Plant to target iron and manganese removal from a shallow groundwater source near the site.

Treatment Plant & Well Exploration
Northwest IA

Search for High Capacity Wells

OCRWS rapid growth in water demands had pushed their existing wells to the limit, and it was now time to start looking for additional water supply. 

Search for High Capacity Wells
Sutherland, IA

West Substation Conversion

DGR provided design, procurement, construction administration services for conversion of the existing substation needed to accommodate generation interconnection from the new Red Rock Hydro Project.  Project increased area transmission reliability and local load serving capability. 

West Substation Conversion
Pella, IA

Wastewater Treatment Facility (SBR)

The new plant, rated for 5.3 million gallons per day (MGD) peak day, doubles the capacity of its predecessor.

Wastewater Treatment Facility (SBR)
Sheldon, IA

River Crossing/Street Improvements

This project consisted of 4,200 L.F. of street improvements and 4,400 feet of water main, 2,000 feet of sanitary sewer, and two directionally drilled river crossings approximately 350 feet each. 

River Crossing/Street Improvements
Dell Rapids, SD

Runway/Taxiway/Electrical Systems

DGR Engineering collaborated with a long-standing airport engineering partner at the Watertown, SD Regional Airport to provide electrical design and construction services for the airport including runway and taxiway lights, lighted signs and airport electrical systems upgrades.

Runway/Taxiway/Electrical Systems
Watertown, SD