Since 1968, Houston Engineering, Inc. (HEI) has served clients with exceptional engineering, surveying, geospatial and environmental consulting services. With offices throughout North Dakota, South Dakota, Minnesota, Iowa and Nebraska. HEI is poised to meet the needs of clients in the Midwest. We offer full service GIS consulting with specialty areas in web, mobile and desktop development. We also specialize in water resources applications in GIS and integration of GIS with engineering and environmental services. A regional leader in the industry, we continue to expand our client base across the nation and beyond. Today, as always, our focus is on our clients.