 The swamp is also home to several plant species at risk, including green dragon and Riddell's goldenrod.Endangered fish and mussel species present in Hay Swamp include, eastern sand darter, greenside darter, northern riffleshell, snuffbox, wavy-rayed lampmussel, rainbow mussel and kidneyshell.Historic logging operations, as well as continuing intensive drainage practices to obtain access to the rich underlying organic soils of the swamp, have affected its overall size and health as a natural habitat.