Lakewood is home to 24 threatened and endangered species. On the west side of the preserve is the 70-acre Wauconda Bog. It is ringed by poison sumac and a natural moat, and is so ecologically valuable it is designated as a National Natural Landmark and an Illinois Nature Preserve. Another area of note is Broberg Marsh, home to a variety of wetland birds. Its habitat provides one of the best breeding spots in the county for birds.
Biking is not allowed on the preserve’s trails, only along sections of the Millennium Trail and the Fort Hill Trail as they run north through Lakewood. Please keep dogs leashed and on trails at all times, and pick up after them.