The savanna stream waterfall is located in this area. The upper savanna has three sections of vegetation. The section adjacent to the stream is composed of fresh-water wetland species from the Florida Everglades including Cornus foemina, Typha domingensis, Salix caroliniana, Crinum americanum, Ludwigia octovalvis, and Cladium jamaicense. The Gallery Forest section is dominated by Acacia species with a rather sparse grass understory. Typical grass species in the gallery forest include Andropogon gayanus, Panicum maximum, Paspalum guenoarum, Setaria poiretiana, and the invasive Brachiaria mutica.
Billabongs are depressions in the upper savanna.
They were designed to be periodically flooded to produce a hyperseasonal habitat. Hyperseasonal environments alternate between waterlogged and desiccated conditions, which kill most trees and thereby favor grasses. The billabongs are dominated by a grass canopy of Brachiaria mutica and Chloris gayana, with patches of twining Vigna luteola and Macroptilium lathyroides vines. The lower savanna is southernmost, next to the upper thornscrub. It is dominated by Brachiaria mutica.