Clear Creek Metro Park contains 4,934 acres, of which 4,769 acres have been dedicated as a nature preserve, representing the largest dedicated natural area in Ohio. It is largely forested, containing hemlock-hardwood forests and ravines, oak-hickory, mixed-mesophytic, and mixed-bottomland forests with some old fields. Seven miles of creek frontage on Clear Creek is protected within this IBA. Nearly 40 species of state-listed plants and animals have been reports within the park and significant geological features are also present throughout.
This large forested site with several unique areas supports one of the largest concentrations of nesting warblers in Ohio, averaging 16-19 speies annually, with the total number of breeding species reaching more than 100 annually. Significant species include: Black Vulture, Red-shouldered Hawk, Hermit Thrush, Veery, Blue-winged, Magnolia, Canada, and Cerulean Warblers, Yellow-billed Cuckoo, Scarlet Tanager, Yellow-breasted Chat, and Chuck-will's-widow just outside the park.
Potential land use changes in the upper part of the watershed, now in agriculture, could pose threats, particularly to the creek corridor and water quality.