More Corps Competence
So, the levees were as much as 5 feet below where the Corps thought they were (New Orleans is sinking -- who knew??)
Corps contests latest levee report
Corps contests latest levee report
posted by Dr. Steven Morphy-Godchaux III at
4:30 PM
1 Comments:
I'm not sure how this works? If the city sinks, the levees and ground behind them sink, so the relative height of the levee is unchanged. If the height of levees is based on a point on the ground, normal surveying practice is to NOT use something that moves over time - i.e. the "benchmark" is a constant with respect to sea level. The only explanation is that the benchmarks were not maintained relative to sea level, which then allowed a levee built some feet above the pavement at the end of Canal Street to be too low relative to sea level. That's not how I learned surveying in college.
By
Murphy "Mac" Morphy, at Fri Mar 23, 04:11:00 PM CDT
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