I agree. It just piles a massive Roller Compacted Concrete mass against a flawed weir in an effort to make a combined structure of such magnitude that its occasional use under extreme flood will be infrequent enough that the combined mass structure will stand up to a temporary mass flow during a flood event.
The drain leaks in the sink. We will add a flat plastic stopper on top of the leaking stopper, add a heavy skillet at the center of the pile of dirty dishes and make it full of soapy water, all to make the drain hold long enough to wash the Christmas dishes. We never fill the sink this full because the whole family only comes over once a year.
It is simply too much effort and time in this old kitchen to get under the sink and tear out the corroded drain and redo all the plumbing in time for Christmas dinner -- its Christmas Eve tomorrow.
That sums it up perfectly.