The Orleans Levee Board had nothing to do with construction of walls and levees along international waterways such as the ship canals and along the River, except providing advice and some of the funds to add to the 70% provided by the Federal Government.

International waterways and shipping canals are the responsibility of the Federal Government. If you watched the video linked by PoppaGator, you saw that failures along the ship canals were a major contributor to the flooding caused by the storm surge, and caused the failure of levee and pump facilities within the parishes.

I presume that Orleans Board consulted with the Corps regarding canals and levees which are not part of the shipping waterways, but these were subject to whim and local preferences. It is evident, however that the major fault was not theirs.

Secondly, as noted before, the Orleans board had nothing to do with levee, wall and pumping facility construction in Jefferson and other parishes which are part of metropolitan New Orleans, and which also sustained damage from the surge- they had their own boards.

Now there are just two boards, one for the west, the other for the east, banks; we can hope that future projects within the parishes will be more coordinated. But these two boards do not design or control protection along international waterways and shipping canals.