Tropical storm Allison in 1992 dislodged hundreds of acres of floating plants and hydrilla from several with the St. Johns River headwater lakes. Masses of hydrilla and floating plants had been carried downstream and jammed towards the U.S. Freeway 192 bridge. Plants have been compressed into a tight mass from https://florida-rivers11862.weblogco.com/33586951/not-known-facts-about-best-rivers-in-florida