United States Department of Transportation
i
Case Study: Flood Levee System Improvements Washington, DC
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2015-01-01
[PDF-42.79 KB]
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Abstract:To prevent water from the Potomac and Anacostia rivers from flooding downtown Washington, D.C., the U.S. Army Corps of Engineers (USACE) is improving the levee system along the north side of the National Mall, running from the Lincoln Memorial to the Washington Monument. A levee system was originally erected to protect the District in 1939, following a major flood event in 1936. This project will improve the levee system through a series of upgrades: a permanent closure at 23rd Street and Fort McNair, and the installation of a more robust removable wall, which will provide flood protection but also allow for traffic flow on 17th street between flood events. Although the levee project was not specifically designed based upon climate projections, the project was designed to provide protection against a greater than 100-year flood event, which was allowed under the initial Congressional authorization for the levee project.
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