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As helping refugees from New Orleans continues, a few people are turning some attention to the long-term future of that City. Begin with this: there must be a new New Orleans. As I write this, New Orleans is flooding again, from the long distance effects of Hurricane Rita. There is a law of hydraulics that great masses of water can be controlled or channeled, but not absolutely stopped. This law is as inexorable as gravity. Thomas Jefferson understood the vital importance of the Mississippi River and the Port of New Orleans to the whole nation. Aaron Burr recognized the same...

This is part four of a five part series examining the Hurricane Katrina levee failures. Part 1 is a timeline sequence of who reported what flood events, to whom, and when it was reported. It can be found here: Part I: Hurricane Katrina Flood Report Sequence Part 2 is a discussion of the levee system's viability, or lack thereof, prior to Hurricane Katrina. It can be found here: Part II: Pre-Katrina Levee Assessment Part 3 is a discussion of the overall storm surge sequence, levee failure modes, and causal limitations relating to the 17th Street Canal and London Canal seawall...

My engineering training kicked in when I saw the NASA photographs from space of New Orleans, and of the whole Gulf Coast of Louisiana, Alabama and Mississippi. There is an obvious solution to the New Orleans problem. The Dutch have already demonstrated it. Take New Orleans as the first and worst example. The pumps, levees and canals intended to protect New Orleans have been controlled by local authorities. They left three of the four pumping stations dependent on the local power grid. Hellooo. The precise time those pumps are most needed is during a storm when the local power grid...

In the 7th century BC, the Assyrian king Sennacherib constructed an 80-kilometre-long, 20-metre-wide stone-lined canal to bring fresh water to his capital Nineveh. Compared to 20th century standards, one is surprised to learn that the project, which included a 330-metre-long aqueduct, was completed in only one year and three months time.