On a more scientific note...
Somebody help me understand the decline in salinity at Eastern Lake. Since it and the rest of the dune lakes are fed by fresh water, it seems to me that the only way they get salt is from storms washing into them. Otherwise, the lake is either closed or flowing into the gulf.
Not to discount the effect of Mr. Williams' sand washing into the lake and choking the outlet, it seems to me that the salinity level would naturally rise and fall over an extended period, depending on when the most recent storm hit it.