Facing the problems of sewer lines more than 100 years old, and network maps used to service them just as ancient, the City of St. Paul (Minn.) Department of Public Works took decisive action. The department aggressively converted from paper-based mapping to an all-electronic system for recording data on its underground infrastructure. The initiative included conversion of existing maps to electronic form and the deployment of an electronic editing tool for sewer network data.Turning more than a century’s worth of sewer network information into spatial data was no small chore, but now that it is done, Public Works has a
