Tropical storm Allison in 1992 dislodged countless acres of floating plants and hydrilla from a number of from the St. Johns River headwater lakes. Masses of hydrilla and floating vegetation had been carried downstream and jammed against the U.S. Freeway 192 bridge. Vegetation were being compressed into a good mass https://rafaelmetiw.iyublog.com/32681295/rivers-in-florida-with-manatees-no-further-a-mystery