On January 19, 2026, a collapse in the Potomac Interceptor sewer line caused more than 250 million gallons of untreated wastewater to pour directly into the Potomac River. While the direct flow into the Potomac has been diverted and the Potomac River Interceptor is being repaired, more can be done to improve water quality within the river and protect Southern Maryland’s critical fisheries.

Learn about the nature-based, engineering-oriented, and policy-focused strategies used to protect coastal areas from disasters like flooding, storm surges, erosion, tsunamis, and more.