Some 160 of the 350 bays in the Spillway locks have been opened for 12 days and billions of gallons of water have traveled through the locks towards Lake Pontchartrain, yet the River level here (see previous photos in gallery) is still the same as the day the Spillway was opened.
It is expected to stay at this level for at least another week.
Therefore, I ask the question---if it is still so high why not open more bays?
Now I remember the reason--if the water level drops too sharply some of the levees upriver may cave in.