The prairie has been identified as the best remaining dry prairie in the region. Several rare plant species at the eastern edge of their range are found here including a state-endangered species. Trenton Bluff Prairie is a dry prairie on a southwest-facing slope in the Mississippi River Valley, about a mile away from the river. It consists of two units, the western portion consisting of two prairies separated by a wooded draw. The bluff summit rises some 300 feet above the flat, sandy river terrace.
Vertical cliffs expose the bedrock layers, dolomite capping the basal sandstone.
Dominant grasses on the dry prairie include Indian grass, little bluestem, big bluestem, side-oats grama, muhly grasses, and porcupine grass. Reptile fauna includes milk snake, blue racer, and timber rattlesnake. Group Use, Research Use, Individual Nature Study. Land Control - DNR Endangered Resources. Manager - Wildlife Manager, DNR, Ag.