Our Work

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  • Water

Sequencing Batch Reactor (SBR)

Designed a lift station with chopper pumps to reduce clogging and maintenance potential. Designed and constructed an SBR plant for high strength waste streams from restaurants and bars within the casino complex.

Sequencing Batch Reactor (SBR)
Larchwood, 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

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

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

Electric System Study

DGR developed an electric system model of Wayne’s electric system.

Electric System Study
Wayne, NE

Water Main Improvements

Over 9,000 linear feet of water main and over 2,000 linear feet of service line was installed for a complete water system rebuild.

Water Main Improvements
Spirit Lake, IA

Mainline Improvements

This project helped WEB Water design a new transmission pipeline and mainline booster station to increase their mainline delivery capacity. 

Mainline Improvements
Aberdeen, SD

Ground Storage Reservoir

RVRWS constructed a new 1,250,000 gallon bolted steel ground storage reservoir and provided additional water storage for their clients.

Ground Storage Reservoir
Rock Valley, 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

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

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

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

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

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

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

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

Street Reconstruction
Sioux City, IA

Transmission Line

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

Transmission Line
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

Double Circuit Line

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

Double Circuit Line
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

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

Wastewater Treatment Facility

Designed new 2 cell lagoon facility with effluent discharged to old bi-level cell which functions as a constructed wetland.

Wastewater Treatment Facility
Jefferson, SD

Transmission Mainline

The Highway 2 to Northern Boundary Mainline Project is a critical transmission mainline for the ASRWSS to deliver water to over 600,000 acres and 300 rural and agricultural services across the eastern half of the Fort Peck Indian Reservation.

Transmission Mainline
Fort Peck, MT

Coal Ash Landfill Cell

The project included the construction of a 7-Acre synthetic lined cell to store a fly ash by-product from the energy generation process.

Coal Ash Landfill Cell
Sioux City, IA

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

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

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

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

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

Box Culvert Replacement

DGR worked with the Army Corps of Engineers and the Iowa DNR to install a new 10’ x 8’ RCP box culvert, as well as sanitary sewer replacement and water main adjustments.

Box Culvert Replacement
Sutherland, 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

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

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

New Generation Plant

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

New Generation Plant
St. Peter, 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

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

12.45 kV Overhead Distribution

The project included full services for 27.5 miles of new 12.47 kV line.

12.45 kV Overhead Distribution
Various South Dakota Locations

Line Tap

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

Line Tap
Benson, MN

Site Development

The Meadow Barn at Country Orchards is an 8,500 sq. ft. event venue located just south of Sioux Falls.

Site Development
Harrisburg, SD

Street Improvements

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

Street Improvements
Hendricks, MN

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

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

Gravity Filter Rehabilitation

DGR Engineering evaluated replacement of the filters and construction of a new water treatment plant.  However, rehabilitation of the existing filters was significantly more economical.

Gravity Filter Rehabilitation
Rock Rapids, IA

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

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

Site Development

DGR designed a substation site with dual Owners, (CLFP and WAPA).  DGR’s team of electrical engineers provided the new substation design while the civil design team completed the grading, surfacing and drainage plan.

Site Development
South Cheyenne, WY

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

Low Pressure Collection System

Analyzed collection and treatment alternatives. Designed a septic tank effluent pump (STEP) system for Superior’s residents. 

Low Pressure Collection System
Superior, 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

Generating Plant

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

Generating Plant
Madison, SD

Water Supply Development

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

Water Supply Development
Harrisburg, SD

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

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

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

New Water Supply

Storage lagoon, pump station, ground storage reservoirs, and miles of pipe. DGR’s expertise in rural water systems made this not only feasible, but economical and easy to operate.

New Water Supply
Lamberton, MN

Pipeline Construction

DGR worked with Kingbrook Rural Water to connect their multiple sources for long-term reliability.

Pipeline Construction
Arlington, SD

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

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

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

New Water Treatment Plant

Construction consisted of two automatic valveless gravity filters, pre-engineered metal building with concrete clearwell, yard and process piping, line shaft turbine high service pumps, HVAC, electrical and control, and site work including an earthen backwash storage pond.

New Water Treatment Plant
George, IA

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

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

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

Sanitary Sewer Rehabilitation

DGR Engineering has experience in sanitary sewer rehabilitation including: CIPP sewer main lining, service line grouting or lining (top hat), structure rehabilitation, and other related techniques.

Sanitary Sewer Rehabilitation
Ellsworth, Balaton & Hendricks, MN

New Substation

The project included design and construction administration services for a new 115-12.47 kV substation that was integrated into the City’s existing 115 kV transmission loop and 12.47 kV underground distribution system.

New Substation
Pierre, SD

Generation Addition

DGR services for this project included environmental permitting, engineering design, material procurement, and construction administration.

Generation Addition
Wessington Springs, SD

Alley Surfacing

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

Alley Surfacing
Madison, SD

Coordination Study

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

Coordination Study
Willmar Municipal Utilities

Site Development

DGR provided all survey and site design services for a 5.6 acre retail development along Sunnybrook Drive. 

Site Development
Dakota Dunes, SD

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

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

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. 

Substation Conversion
Pella, IA

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

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

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

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

Wastewater Treatment Facility

Upgraded sludge handling equipment, including belt filter press and sludge storage area.  Increased capacity of existing lift station.

Wastewater Treatment Facility
Sanborn, IA

Water Main Extension

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

Water Main Extension
Sioux Falls, 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

Pond Closure

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

Pond Closure
Luverne, MN

New Water Supply for Ethanol Plant

DGR Engineering helped Highwater ethanol build an intake, two pump stations, two reservoirs and holding ponds to move the water along its 23-mile journey.

New Water Supply for Ethanol Plant
Lamberton, MN

Commercial Park Development

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

Commercial Park Development
Sioux Center, IA

Street & Utility Improvements

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

Street & Utility Improvements
Madison, SD

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

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