There are 720 acres, including the lake which is about 400 acres. There are no roads or trails.

From OH-33, exit at OH-664 (if going north, turn left onto OH-664, if going south, turn right on to OH-664). Go about .1 mile and turn right onto Lake Logan Road. Go about one mile to the lake.
Parking Areas: At boat launch, fishing pier and swimming beach.

Winter
Waterfowl until the lake is completely frozen. Bald Eagles.
Spring
Waterfowl, gulls, terns, moorhens, shorebirds possible on the swimming beach, Osprey, and other usual spring migrants.
Summer
Hybrid mallards, Mallards, domestic ducks and geese, Canada Geese, and Mute Swans.
Fall
Usual fall migrants in surrounding trees and fields and wooded areas, also migrating waterfowl.
The following specialty birds have also been seen at Lake Logan over a several-year time span: Red-necked Grebe, Red-throated Loon, Eared Grebe, Willet, Whimbrel, White Pelican, Yellow-crowned Night-heron, Black Tern, Prothonotary Warbler, Northern Waterthrush, Yellow-throated Warbler, Purple Gallinule.

Much time has passed since the region surrounding Lake Logan was first uplifted from the ancient sea that once covered most of Ohio. This unglaciated plateau in the southeastern part of the state is Ohio’s oldest landscape as the glaciers never invaded the region. Lake Logan State Park lies in the Hocking Valley, formed by the Hocking River. The Hocking was a major outlet for glacial meltwaters. These waters deposited large amounts of outwash material, primarily sand and gravel, which strongly affected the type of biological communities present today

The forest surrounding Lake Logan is, for the most part, an oak-hickory association. White and black oak, tuliptree, shagbark, and pignut hickory are the most dominant species. The forest floor is dotted with a variety of wildflowers such as fire pink, wintergreen, bluets, and spring beauties. Ground cover plants include greenbriar, blueberry, and numerous ferns and fungi.

Lake Logan is home to the raccoon, opossum, skunk, red-backed salamander, gray squirrel, box turtle, white-tailed deer, and wild turkey. Many birds frequent the area such as the turkey vulture, red-tailed hawk, barn owl, pileated woodpecker, Carolina chickadee, tufted titmouse, wood thrush, and scarlet tanager. Various species of waterfowl can be viewed during migration.