Elected officials and department heads are increasingly relying on geographic information system (GIS) technology to make efficient and accurate decisions when and where it counts. ""GIS for Decision Support and Public Policy Making"" presents 27 case studies and eight exercises that demonstrate the positive result of incorporating GIS methodology in daily operations of the public sector. Discover how GIS has improved the communication, collaboration, and decision making in the organizations featured in this book. A return on investment (ROI) matrix is also included as a resource to evaluate cost and time savings due to the increased productivity that a GIS allows.