Tidal Basin Seawall New Pathway Jefferson Memorial Washington DC United States // WASHINGTON, D.C. — Newly opened pedestrian pathways line the southern corner of the Tidal Basin as part of the Tidal Basin Seawall Reconstruction Project near the Jefferson Memorial, Monday, April 27, 2026. The multi-year rehabilitation effort addresses decades of land subsidence and rising sea levels that previously flooded the historic walkways. This raised stone seawall restores the structural integrity of the 107-acre reservoir, originally engineered in the 1880s to flush the adjacent Washington Channel. In t

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