This chapter explains the utility of Geographic Information Systems (GIS) and web maps in informing and empowering stakeholders to make informed policy decisions. Alcohol-related motor-vehicle collisions (MVCs) in Louisiana serve as a case study. By delving into the multifaceted challenges of alcohol misuse in Louisiana, the chapter highlights how GIS and web maps can illuminate complex data, making it accessible and actionable for communities. Through the practical example of Ouachita Parish, the chapter demonstrates the tangible outcomes of data-driven advocacy, such as policy changes, achieved through the iterative development of web maps and community feedback. While the potential of geospatial tools is vast, the chapter also cautions against their uncritical use, emphasizing the need for nuanced understanding and community engagement. This chapter comprehensively explores the power of geospatial tools in addressing alcohol misuse, emphasizing collaboration, responsibility, and a shared vision for effective data utilization.