Flooding in Charleston is set to worsen by 2050, with projections indicating an additional 14 inches of sea level rise, according to discussions from the City of Charleston Basin Flood Action Committee meeting on March 13, 2025. The committee highlighted the urgent need to address various types of flooding impacting the city, including rainwater, tidal, and surge flooding, with a particular emphasis on the growing threat of groundwater flooding.

Over the past century, Charleston has experienced 13 inches of sea level rise, with the last 35 to 40 years accounting for most of this increase. The committee noted that 70% of major tidal floods have occurred since 2015, underscoring the escalating nature of flooding events. As sea levels continue to rise, the city anticipates more frequent and severe flooding, particularly in areas like Downtown James Island and West Ashley, where tidal flooding poses a significant risk.

The committee presented maps illustrating current and projected flooding scenarios, demonstrating that while the additional 14 inches of sea level rise will increase flooding, it remains manageable. However, the combination of heavy rainfall during high tides could lead to more severe flooding in certain areas, such as Shoreham Drive and Central Park Road.

In response to these challenges, the committee is working on developing projects aimed at mitigating flooding impacts and enhancing collaboration between the city, county, and public service districts. The discussions emphasized the importance of public communication regarding the types of flooding and the specific risks faced by different neighborhoods.

As Charleston prepares for a future with rising waters, the committee's proactive approach aims to safeguard the community against the inevitable changes brought by climate change.