Number: RL33188 Title: Protecting New Orleans: From Hurricane Barriers to Floodwalls Authors: Nicole Carter, Resources, Science, and Industry Division Abstract: This report documents the evolution in the design of the Lake Pontchartrain project, with specific reference to how and by whom design decisions were made. The focus is on two major design developments relevant to the current investigations into floodwall failures in downtown New Orleans: (1) the shift from barriers at Lake Pontchartrain's inlets to higher levees along the lakeshore; and (2) the shift from floodgates at the mouth of the city's stormwater outfall canals that drain into Lake Pontchartrain to higher floodwalls along the length of the canals. Pages: 13 Date: January 26, 2006