Our Work

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  • All
  • Aviation
  • Civil
  • Electrical Power
  • Survey
  • Wastewater
  • Water

Low Head Dam Design & Survey

DGR performed the topographic survey as well as the design of the low head dam.

Low Head Dam Design & Survey
Sioux Center, IA

Sandness Raw Water Main Project

DGR Engineering designed 27 miles of 12” – 24”, and used their knowledge of cost effective rural construction to save Marshall Municipal Utilities millions of dollars in construction costs, and providing capacity to deliver over 4 million gallons of additional water each day.

Sandness Raw Water Main Project
Marshall, MN

Runway Rehab / Apron Expansion

This multi-phase project included apron expansion, runway rehabilitation, hangar area expansion, as well as design and construction services for a new runway and taxiway.

Runway Rehab / Apron Expansion
Luverne, MN

Pipeline Improvements

56 mile pipeline project was designed, permitted, bid, installed, and started up in less than two years from the project’s inception.

Pipeline Improvements
May City, IA

New Substation Construction

DGR assisted SMU in all aspects of the project, from initial evaluation, to design and financing, through final construction.

New Substation Construction
Stanhope, IA

Commercial Park Development

46-acre Highway Commercial Development fronting U.S. Highway 75.

Commercial Park Development
Sioux Center, IA

Street & Utility Improvements

This project consisted of street improvements for the downtown business district in Dell Rapids.  Also included in this project were improvements to the water main, sanitary sewer and storm sewer in conjunction with street improvements. 

Street & Utility Improvements
Dell Rapids, SD

Pond Closure

Assisted the City of Luverne in abandoning the industrial wastewater treatment facility formerly owned by Iowa Beef Producers.

Pond Closure
Luverne, MN

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

Site Design, Survey & Staking

DGR performed the site design as well as the topographic surveying and construction staking of new Kuyper Residence Hall on the campus of Dordt College.

Site Design, Survey & Staking
Sioux Center, 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

Water Supply Development

DGR Engineering worked with LCRWS to diversify their water supply options for their future growth. 

Water Supply Development
Harrisburg, SD

Site Development

Building and site demolition, utilities and grading, two site geothermal well fields, site work

Site Development
Sioux City, IA

Ground Storage Reservoir

Construction of a 500,000 gallon prestressed concrete ground storage reservoir, site work and site piping.

Ground Storage Reservoir
Orange City, IA

Mainline Distribution Circuits

The project included the construction of three new mainline 13.8 kV circuits on the City’s distribution system to increase capacity and reliability.

Mainline Distribution Circuits
Sioux Falls, SD

Turbine Control System Upgrade

The project included full removal and replacement of the existing control panels within the turbine building control room.

Turbine Control System Upgrade
Marshall, MN

Double Circuit Line

The  project included full services for a 1.7 mile, double-circuit 115 kV line. 

Double Circuit Line
Marshall Municipal Utilities

Street & Utility Improvements

This project consisted of 3,700 L.F. of street improvements on 15th Street from Old Highway 77 to Clark Avenue in Dell Rapids.  Also included in this project were improvements to the water main, sanitary sewer and storm sewer in conjunction with street improvements.

Street & Utility Improvements
Dell Rapids, SD

Lighting & Signing Project

DGR Engineering collaborated with a local engineering partner at the Ankeny, IA Regional Airport to provide electrical design and construction services including runway and taxiway lights, lighting signs and navigational aids including Precision Approach Path Indicators.

Lighting & Signing Project
Ankeny, IA

Ground Storage Reservoir

The ground storage reservoir is a critical component of the water treatment process, allowing surge capacity between the filtration process and the softening system.

Ground Storage Reservoir
Estherville, IA

Water Treatment Plant Expansion

Construction of a water treatment plant expansion of 1200 gpm capacity, filter cells; masonry building; yard and process piping; line shaft turbine high service and backwash pumps; horizontal split case transfer pumps; HVAC; electrical and control; site work and miscellaneous appurtenant work.

Water Treatment Plant Expansion
Estherville, IA

Keystone Transmission Line

The project included full services for a 58 miles of new 115 kV line and 5 miles of new 69 kV line.

Keystone Transmission Line
Madison, SD

Alley Surfacing

This pair of projects encompassed eight downtown alley blocks over two construction contracts in consecutive years.

Alley Surfacing
Madison, SD

Fuel System, Terminal, Hangars

Design and construction services for support facilities at the new Sioux County Regional Airport. 

Fuel System, Terminal, Hangars
Sioux County, IA

Water Treatment Plant

DGR Engineering worked with Clay Rural Water System to construct a reverse osmosis water treatment plant to take water with raw water combined radium 226 + 228 of 12.4 pCi/L down to below detection limits.

Water Treatment Plant
North Sioux City, SD

Pipeline Construction

The North Core Pipeline project consisted of approximately 70 miles of pipeline from near Ft. Pierre to Philip, four ground storage reservoirs, and four pump stations. 

Pipeline Construction
Murdo, SD

Street & Utility Improvements

This project encompassed eight downtown alley blocks over a single construction season.

Street & Utility Improvements
Madison, SD

SE Morningside Sanitary Sewer

The City of Sioux City needed a large diameter trunk sewer to carry flows from new residential development and future development on the east side of town to the existing Southeast Morningside Lift Station.

SE Morningside Sanitary Sewer
Sioux City, IA

Arc Flash Hazard Study

DGR provided a detailed arc flash hazard study for the electric distribution system for Milford Municipal Utilities.

Arc Flash Hazard Study
Milford Municipal Utilities

Broadway Generation Plant

The project included full services for the construction of a new generation plant.

Broadway Generation Plant
St. Peter, MN

Water Main Replacement

Work included water main replacement, sanitary manhole repair, replacement of surfacing over trenches, and boulevard restoration.

Water Main Replacement
Sioux Falls, SD

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

Connection to L-P Rural Water

DGR completed a preliminary engineering report that met all the requirements for Rural Development. 

Connection to L-P Rural Water
Edgerton, MN

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.

New Airport Development
Sioux County, IA

Water Main Development

This project consisted of installing approximately 4,500 feet of 16” DIP water transmission main on Six Mile Road between 10th Street and 26th Street in Sioux Falls, SD.

Water Main Development
Sioux Falls, SD

Site Development

Hendricks Community Hospital added to their hospital facility, which required the completion of several smaller projects in conjunction with the overall construction project.

Site Development
Hendricks, MN

Water Storage Tank Repainting

In just under four months, the tank was drained, sandblasted, and nearly 1,900 gallons of paint applied to over 100,000 square feet of surface area.  The tank was then returned to service.

Water Storage Tank Repainting
Sioux City, IA

Line Tap

The project included full services for a 1.4 mile 115 kV line.

Line Tap
Benson, MN

Campus Improvements

DGR worked with college staff to improve the surface drainage surrounding the East Campus apartments as well as enhancing the Campus Green Space.

Campus Improvements
Sioux Center, IA

Downtown Street Reconstruction

The City of Orange City adopted a long-term plan to replace the streets in the downtown business and government district.

Downtown Street Reconstruction
Orange City, IA

Recreational Trail

This project consisted of one and a half miles of 8’ wide recreational trail along the Big Sioux River and in the City Park in Dell Rapids, South Dakota. 

Recreational Trail
Dell Rapids, SD

Airport Electrical Expertise

DGR led the design and construction of the $2.5 million airport electrical and instrument landing system as part of the $20 million reconstruction of the airport as a subconsultant to Helms and Associates.

Airport Electrical Expertise
Brookings, SD

Pavement/Utility Improvements

The City selected DGR to reconstruct water mains, sanitary and storm sewer and the highway pavement on Jefferson Street and TH 68.

Pavement/Utility Improvements
Minneota, MN

Coordination Study

DGR provided a device by device coordination study for the Willmar Municipal Utilities electric distribution system.

Coordination Study
Willmar Municipal Utilities

Digester Improvements Project

Analyzed digester cover and mixing system alternatives due to condition of existing plant equipment. Selected cover and mixing system to best fit the City’s request for potential future digester gas re-use to reduce plant operational expenses.

Digester Improvements Project
Estherville, IA

GIS Mapping

DGR developed an electric GIS mapping system for the City of Madison, South Dakota. The project entailed obtaining high resolution, geo-referenced aerial imagery to serve as a base background to the system.

GIS Mapping
Madison, SD

Street Reconstruction

This project involved the reconstruction of approximately 8,500 linear feet of residential street including replacement of all utilities.

Street Reconstruction
Sioux City, IA

Street Improvements

DGR assisted the City in coordinating this major infrastructure overhaul in the heart of the town.

Street Improvements
Hendricks, MN

Street Reconstruction

This project included new utilities (sanitary sewer, storm sewer and water main), new sidewalks, paving and traffic signals.

Street Reconstruction
Sioux City, IA

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

Treatment Plant & Well Exploration

DGR Engineering (DGR) 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

Mainline Distribution Circuits

The project included the construction of three new mainline 13.8 kV circuits on the City’s distribution system to increase capacity and reliability. 

Mainline Distribution Circuits
Sioux Falls, SD

Water Source Addition

DGR and Red Rock Rural Water System teamed up with POET to perform a program of exploratory drilling, test pumping and well field development.  Designed three production wells capable of supplying 1.4 MGD to the ethanol plant and 9 miles of 10” diameter raw water main.

Water Source Addition
Jeffers, MN

Street Reconstruction

A multi-phase, multiple-year project to replace paving and aging utilities, install new sidewalks, decorative street lights and traffic signals.

Street Reconstruction
Sioux City, IA

Site Development

DGR performed the boundary and topographic surveying as well as the site design of school building addition as a subconsultant.

Site Development
Sioux Center, IA

Pump Station & Storage Reservoirs

The new Edgerton Pump Station (EPS) was constructed to facilitate bringing purchased water from Lewis & Clark Regional Water System (L&C) to the LPRW system. 

Pump Station & Storage Reservoirs
Edgerton, MN

Wastewater Treatment Facilities

Designed a SAGR system to be utilized as a polishing step following the City’s aerated lagoon system. The system includes a synthetic liner, aeration lines, rock media, an insulating mulch layer, control structures, and related piping.

Wastewater Treatment Facilities
Hull, IA

Runway & Taxiway Improvements

The project included coordination with the watershed district, environmental, land acquisition, and staging issues. DGR worked with the City, agencies and land owners to restore relationships and achieve a successful project.

Runway & Taxiway Improvements
Hector, MN

Water Main Extension

This project included water main installation, asphalt removal and replacement, and site restoration and grading. 

Water Main Extension
Sioux Falls, SD

Utility & Street Improvements

This project consists of approximately 1,500 feet of 6” water main replacement and 1,400 feet of 8” sewer replacement.

Utility & Street Improvements
Dell Rapids, SD

Street Improvements

The City selected DGR to reconstruct water mains, sanitary and storm sewer and pavement for their typical recurring infrastructure project.

Street Improvements
Windom, MN

Hospital Site Development

Sioux Center Community Hospital relocated their hospital facility, which required the completion of several smaller projects in conjunction with the overall hospital construction project.

Hospital Site Development
Sioux Center, IA

Site Survey & Development

DGR performed the boundary and topographic surveying as well as the planning and site design of new Kids Club facility. 

Site Survey & Development
Rock Rapids, IA

Generating Plant

The project included full services for the construction of a new generation plant and substation.

Generating Plant
Madison, SD

Electrical Distribution Conversion

The project included full services for the conversion of the utility’s distribution circuitry from overhead to underground.  The conversion was completed in several project phases as part of a multi-year process.

Electrical Distribution Conversion
Marshall Municipal Utilities

Site Development

Sioux Valley Hospitals of Sioux Falls, SD relocated their Luverne hospital, which required the completion of several smaller projects.

Site Development
Luverne, MN

Site Development

DGR performed the boundary and topographic surveying as well as the site design of school building addition as a subconsultant.

Site Development
Rock Rapids, IA

Tracks & Sports Complexes

DGR has performed the planning and design of multiple Athletic Tracks and Sports Complexes for several communities in the region. The competition facilities are used by little leaguers up to NAIA college events.

Tracks & Sports Complexes
Numerous Locations