The water in Charleston does not flow through the city as a policy debate. It comes gushing over curbs, through intersections, around school buses and storefronts. The city sits at sea level, and the sea is rising. 

For years, Charleston flooded, recovered, and waited for the next storm. What changed was not the weather, but participating in the Bloomberg Harvard City Leadership Initiative and carrying those lessons home. City Hall began using data in new ways: tracking road closures alongside tide and weather patterns, analyzing high-water vehicle deployments, and mapping 118 vehicle rescues from floodwater over two years. A 7.1-foot tide with a northeast wind no longer leaves crews guessing. What had looked like scattered emergencies became a shared set of facts from which to build solutions.

Local government brought transportation planners and civil engineers, emergency managers and first responders, neighborhood leaders and environmental organizations, parents and business owners to the same table. This led to real-time barricade deployment on dangerous streets, basin-by-basin planning, a platform called WaterWise that brings residents into resilience, and protections and public space that cost less, arrive faster, and come together because city hall pulls other partners in to share the load—including the $1.4 billion Battery Extension, a local and federal project that will shield the peninsula while creating miles of waterfront promenade. 

The same approach now guides decisions which are measured in generations. Today, infrastructure,........

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