This sounded like it could be referring to the Herbert Hoover dike and Lake Okeechobee, but for the salt part.
But soon Villa Epecuen's growth would come to a screeching halt. In 1980 the area experienced a slow but drastic climate shift that dumped large amounts of rain in the lake. Because Lago Epecuen had no outlet to drain the influx of water, the lake slowly swelled, according to NASA. By 1985 the lake's waters were already testing the limits of the dike that protected the village. On November 10, 1985 a severe storm blew through the area, causing the water level in Lago Epecuen to swell until it broke through the dike. A torrent of water cascaded into town, inundating the streets.
Over the next eight years the lake would continue to grow, until eventually, in 1993, Villa Epecuen sat 33 feet below the surface of Lago Epecuen.