Mohn Surveying, Inc. is a full-service engineering and surveying firm providing field-to-finish hydrographic surveys, land surveys, construction surveys, and civil engineering services throughout the Midwest. The company has been conducting land surveys since 1984 and hydrographic surveys throughout the United States since 1975. With a strong background in various surveying techniques, they provide services such as digital data collection, complete mapping, and engineering construction drawings. The firm serves clients in Iowa, Wisconsin, Minnesota, Illinois, Indiana, and Missouri, and has experience working on projects for the United States Corps of Engineers.