Naturally draining into the Everglades, Okeechobie has recently been artificially redirected east and west, and, full of algae from farming and the sugar-cane business, the drainage water is destroying Florida's Treasure Coast.  Undoubtedly, it is full of glyphosate.  (See related info on glyphosate here.)

This is the documentary series titled The Tortured Coast.  Be sure to watch all episodes: