Indiana Height Modernization Project

Summary:

The Indiana Height Modernization Project was performed to provide statewide access to accurate, reliable, and consistent heights. This project provided the information necessary for the National Geodetic Survey (NGS) to update and refine the elevation information used by surveyors, engineers, emergency managers, scientists, farmers, and natural resource managers for mapping, flood risk determination, transportation, land use, and ecosystem management. Through our efforts of densifying monuments and collecting static GPS observations on new and existing monuments throughout Indiana, NGS can better provide and maintain accurate, reliable, up-to-date heights as part of a broader nationwide effort. Our efforts also created an accurate connection between the original networks of monumentation established by conventional surveying techniques with the modern National Spatial Reference System (NSRS).