Over the past decade, the City of Detroit has made significant strides in enhancing its stormwater management efforts to mitigate combined sewer overflows (CSO) and reduce the risk of flooding. During this period, the city faced many challenges underscored by economic changes and aging infrastructure and climate change. A proactive strategy undertaken by the Detroit Water and Sewerage Department (DWSD) since 2013 was the adaptation of a comprehensive Green Stormwater Infrastructure (GSI) strategy to meet the regulatory requirements of the NPDES permit. This session examines the existing strategies and future goals of DWSD’s GSI portfolio. The most recent project will provide stormwater management for more than 200 acres. While DWSD has surpassed the GSI spend mandate, the challenges associated with urban stormwater management persist, therefore DWSD is actively strategizing for future large-scale stormwater management solutions to meet regional and local goals including CSO reduction and flooding mitigation. DWSD's GSI portfolio, with its current successes, forms the foundation for future endeavors in large-scale stormwater management.