Periodic fires swept through this area prior to settlement killing small trees and shrubs but the thick bark of the large trees protected them from the fire. Black oaks are the dominant savanna trees at Hooper Branch Savanna with prairie grasses such as porcupine grass, june grass and little bluestem. Prairie forbs such as puccoons, lupines, leadplant, spiderwort, and butterfly weed provide color to the savanna landscape. In the shrub prairie portions, mosses carpet the sand surface. There are many designated picnic areas with tables and grills located in shady areas convenient to parking lots.
Sanitary facilities are available in most areas.
There are no shelters. Drinking water is available at the area headquarters. In addition, several miles of unmarked trails wind through wooded and prairie sections of the area that have much interesting plant, animal, and bird life. To preserve the high quality of the natural area at Iroquois, all access on the area is by walking only. Please carry out all litter and do not remove any natural material.